# questions

title: an-individual-and-a-population-has-certain-characteristics-name-these-attributes-with-definitions
tags: ['Biology', 'Organisms and Populations']
options: None
correct_option: None
source_db: MarksBatch1_P1.db
slug:
an-individual-and-a-population-has-certain-characteristics-name-these-attributes-with-definitions-67017

question:
<div class="question">An individual and a population has certain characteristics. Name these attributes with definitions.</div>

answer:
<div class="solution">The attributes of an individual and a population include pattern of distribution, dispersal biotic potential and gene pool. Inter population dispersion or internal distribution patterns or dispersion is phenomenon of distrubuion of individual within geographical boundaries of the population.<br/>An individual is dispersed at one or another time during their life in a population which is revealed by immigration or emigration. This is known as dispersal.<br/>(i) Immigrations refers to the number of individuals of the same species that have come into the habitat from elsewhere during a specified time period.<br/>(ii) Emigration refers to the number of individuals of the population that exit or leave the habitat and go elsewhere during a specified time period.<br/>Biotic Potential. The natural capacity of a population to increase its size under ideal environmental conditions is called biotic potential.<br/>Gene pool. All the genotypes of all individuals in a breeding population is referred to as gene pool.</div>


tags: ['Chemistry', 'p Block Elements (Group 13 & 14)', 'JEE Main']
source_db: MarksBatch1_P1.db
title:
an-inorganic-compound-a-made-of-two-most-occurring-elements-in-the-earths-crust-and-it-is-used-in-building-construction-when-made-to-react-with-carbon

slug:
an-inorganic-compound-a-made-of-two-most-occurring-elements-in-the-earths-crust-and-it-is-used-in-building-construction-when-made-to-react-with-carbon-13952

question:
<div class="question">An inorganic compound <math><mfenced separators="|"><mrow><mi mathvariant="normal">A</mi></mrow></mfenced></math> made of two most occurring elements in the earthâs crust and it is used in building construction when made to react with carbon forms a poisonous gas <math><mfenced separators="|"><mrow><mi mathvariant="normal">B</mi></mrow></mfenced></math> which is diatomic molecule. Compounds <math><mfenced separators="|"><mrow><mi mathvariant="normal">A</mi></mrow></mfenced></math> and <math><mfenced separators="|"><mrow><mi mathvariant="normal">B</mi></mrow></mfenced></math> are</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data"><math><mi mathvariant="normal">S</mi><mi mathvariant="normal">i</mi><msub><mrow><mi mathvariant="normal">O</mi></mrow><mrow><mn>2</mn></mrow></msub><mo>,</mo><mi mathvariant="normal"></mi><mi mathvariant="normal">C</mi><msub><mrow><mi mathvariant="normal">O</mi></mrow><mrow><mn>2</mn></mrow></msub></math></span> </li><li class="correct"> <span class="option-label">B</span> <span class="option-data"><math><mi mathvariant="normal">S</mi><mi mathvariant="normal">i</mi><msub><mrow><mi mathvariant="normal">O</mi></mrow><mrow><mn>2</mn></mrow></msub><mo>,</mo><mi mathvariant="normal"></mi><mi mathvariant="normal">C</mi><mi mathvariant="normal">O</mi></math></span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li><li class=""> <span class="option-label">C</span> <span class="option-data"><math><mi mathvariant="normal">S</mi><mi mathvariant="normal">i</mi><msub><mrow><mi mathvariant="normal">O</mi></mrow><mrow><mn>2</mn></mrow></msub><mo>,</mo><mi mathvariant="normal"></mi><msub><mrow><mi mathvariant="normal">N</mi></mrow><mrow><mn>2</mn></mrow></msub></math></span> </li><li class=""> <span class="option-label">D</span> <span class="option-data"><math><mi mathvariant="normal">C</mi><mi mathvariant="normal">a</mi><mi mathvariant="normal">O</mi><mo>,</mo><mi mathvariant="normal"></mi><mi mathvariant="normal">C</mi><msub><mrow><mi mathvariant="normal">O</mi></mrow><mrow><mn>2</mn></mrow></msub></math></span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value"><math><mi mathvariant="normal">S</mi><mi mathvariant="normal">i</mi><msub><mrow><mi mathvariant="normal">O</mi></mrow><mrow><mn>2</mn></mrow></msub><mo>,</mo><mi mathvariant="normal"></mi><mi mathvariant="normal">C</mi><mi mathvariant="normal">O</mi></math></span> </div>

answer:
<div class="solution"><math><mi mathvariant="normal">S</mi><mi mathvariant="normal">i</mi><msub><mrow><mi mathvariant="normal">O</mi></mrow><mrow><mn>2</mn></mrow></msub></math> is a compound of oxygen and silicon most abundant elements of earthâs crust and is used in construction. <br/><math><mi mathvariant="normal">S</mi><mi mathvariant="normal">i</mi><msub><mrow><mi mathvariant="normal">O</mi></mrow><mrow><mn>2</mn></mrow></msub><mo>+</mo><mn>2</mn><mi mathvariant="normal">C</mi><mo>â</mo><mi mathvariant="normal">S</mi><mi mathvariant="normal">i</mi><mo>+</mo><mn>2</mn><mi mathvariant="normal">C</mi><mi mathvariant="normal">O</mi></math> (Poisonous gas and diatomic molecule)</div>


tags: ['Mathematics', 'Probability', 'NDA', 'NDA 2015 (Phase 2)']
source_db: MarksBatch1_P1.db
title:
an-insurance-company-insured-2000-scooter-drivers-4000-car-drivers-and-6000-truck-drivers-the-probabilities-of-an-accident-involving-a-scooter-driver-

slug:
an-insurance-company-insured-2000-scooter-drivers-4000-car-drivers-and-6000-truck-drivers-the-probabilities-of-an-accident-involving-a-scooter-driver-17400

question:
<div class="question">An insurance company insured 2000 scooter drivers, 4000 car drivers and 6000 truck drivers. The probabilities of an accident involving a scooter driver, car driver and a truck driver are $0.01,0.03$ and $0.15$ respectively. One of the insured persons meets with an accident. The probability that the person is a scooter driver is</div>

options:
<ul class="options"> <li class="correct"> <span class="option-label">A</span> <span class="option-data">$\frac{1}{52}$</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li><li class=""> <span class="option-label">B</span> <span class="option-data">$\frac{3}{52}$</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">$\frac{15}{52}$</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">$\frac{19}{52}$</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">$\frac{1}{52}$</span> </div>

answer:
<div class="solution">Let $\mathrm{E}_{1}, \mathrm{E}_{2}, \mathrm{E}_{3} \&amp; \mathrm{~A}$ be events defined as follows. $\mathrm{E}_{1}=$ person chosen is a scooter driver $\mathrm{E}_{2}=$ person chosen is a car driver. $\mathrm{E}_{3}=$ person chosen is a truck driver $\&amp;$ $\mathrm{A}=$ person meets with an accident $\mathrm{P}\left(\mathrm{E}_{1}\right)=\frac{2000}{12000}=\frac{1}{6} ; \mathrm{P}\left(\mathrm{E}_{2}\right)=\frac{1}{3} \&amp; \mathrm{P}\left(\mathrm{E}_{3}\right)=\frac{1}{2}$<br/>$\because$ Probability that a person meets with an accident<br/>given that he is a scooter driver $=\mathrm{P}\left(\mathrm{A} / \mathrm{E}_{1}\right)=0.01$<br/>$\mathrm{P}\left(\mathrm{A} / \mathrm{E}_{2}\right)=0.03 \&amp; \mathrm{P}\left(\mathrm{A} / \mathrm{E}_{3}\right)=0.15$<br/>- the person meets with an accident. $\therefore$ the probability that he was a scooter driver<br/>$=\mathrm{P}\left(\mathrm{E}_{1} / \mathrm{A}\right)=\frac{\mathrm{P}\left(\mathrm{E}_{1}\right) \mathrm{P}\left(\mathrm{A} / \mathrm{E}_{1}\right)}{\mathrm{P}\left(\mathrm{E}_{1}\right) \mathrm{P}\left(\mathrm{A} / \mathrm{E}_{1}\right)+\mathrm{P}\left(\mathrm{E}_{2}\right) \mathrm{P}\left(\mathrm{A} / \mathrm{E}_{2}\right)+\mathrm{P}\left(\mathrm{E}_{3}\right) \mathrm{P}\left(\mathrm{A} / \mathrm{E}_{3}\right)}$<br/>$=\mathrm{P}\left(\mathrm{E}_{1} / \mathrm{A}\right)=\frac{1 / 6 \times 0.01}{\left(\frac{1}{6} \times 0.01\right)+\left(\frac{1}{3} \times 0.03\right)+\left(\frac{1}{2} \times 0.15\right)}=\frac{1}{52}$</div>


tags: ['Physics', 'Motion In Two Dimensions', 'AP EAMCET', 'AP EAMCET 2001']
source_db: MarksBatch1_P1.db
title:
an-object-is-projected-with-a-velocity-of-20-m-s-making-an-angle-of-4-5-with-horizontal-the-equation-for-the-trajectory-is-h-a-x-b-x-2-where-h-is-heig-1

slug:
an-object-is-projected-with-a-velocity-of-20-m-s-making-an-angle-of-4-5-with-horizontal-the-equation-for-the-trajectory-is-h-a-x-b-x-2-where-h-is-heig-1-35647

question:
<div class="question">An object is projected with a velocity of $20 \mathrm{~m} / \mathrm{s}$ making an angle of $45^{\circ}$ with horizontal. The equation for the trajectory is $h=A x-B x^2$ where $h$ is height, $x$ is horizontal distance $A$ and $B$ are constants. The ratio $A: B$ is $\left(g=10 \mathrm{~ms}^{-2}\right)$</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">$1: 5$</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">$5: 1$</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">$1: 40$</span> </li><li class="correct"> <span class="option-label">D</span> <span class="option-data">$40: 1$</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">$40: 1$</span> </div>

answer:
<div class="solution">$u=20 \mathrm{~m} / \mathrm{s}, \theta=45^{\circ}$<br/>Equation of trajectory $h=A x-B x^2$ Standard equation<br/>$h=x \tan \theta-\frac{g x^2}{2 u^2 \cos ^2 \theta}$<br/>On comparing the two equations<br/>$\begin{aligned} A &amp; =\tan \theta, B=\frac{g}{2 u^2 \cos ^2 \theta} \\ \frac{A}{B} &amp; =\frac{\tan \theta}{\frac{g}{2} u^2 \cos ^2 \theta}=\frac{2 u^2 \cos ^2 \theta \tan \theta}{g} \\ &amp; =\frac{2 \times(20)^2 \cos ^2 45^{\circ} \tan 45^{\circ}}{10} \\ &amp; =\frac{2 \times 400 \times\left(\frac{1}{\sqrt{2}}\right)^2 \times 1}{10} \\ &amp; =2 \times 40 \times \frac{1}{2}=40\end{aligned}$<br/>$A: B=40: 1$</div>


tags: ['Physics', 'Motion In Two Dimensions', 'JEE Main']
source_db: MarksBatch1_P1.db
title:
an-object-is-projected-with-a-velocity-of-20-m-s-making-an-angle-of-4-5-with-horizontal-the-equation-for-the-trajectory-is-h-a-x-b-x-2-where-h-is-heig-2

slug:
an-object-is-projected-with-a-velocity-of-20-m-s-making-an-angle-of-4-5-with-horizontal-the-equation-for-the-trajectory-is-h-a-x-b-x-2-where-h-is-heig-2-11065

question:
<div class="question">An object is projected with a velocity of $20 \mathrm{~m} / \mathrm{s}$ making an angle of $45^{\circ}$ with horizontal. The equation for the trajectory is $h=A x-B x^2$ where $h$ is height, $x$ is horizontal distance $A$ and $B$ are constants. The ratio $A: B$ is $\left(g=10 \mathrm{~ms}^{-2}\right)$</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">$1: 5$</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">$5: 1$</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">$1: 40$</span> </li><li class="correct"> <span class="option-label">D</span> <span class="option-data">$40: 1$</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">$40: 1$</span> </div>

answer:
<div class="solution">$u=20 \mathrm{~m} / \mathrm{s}, \theta=45^{\circ}$<br/>Equation of trajectory $h=A x-B x^2$ Standard equation<br/>$h=x \tan \theta-\frac{g x^2}{2 u^2 \cos ^2 \theta}$<br/>On comparing the two equations<br/>$\begin{aligned} A &amp; =\tan \theta, B=\frac{g}{2 u^2 \cos ^2 \theta} \\ \frac{A}{B} &amp; =\frac{\tan \theta}{\frac{g}{2} u^2 \cos ^2 \theta}=\frac{2 u^2 \cos ^2 \theta \tan \theta}{g} \\ &amp; =\frac{2 \times(20)^2 \cos ^2 45^{\circ} \tan 45^{\circ}}{10} \\ &amp; =\frac{2 \times 400 \times\left(\frac{1}{\sqrt{2}}\right)^2 \times 1}{10} \\ &amp; =2 \times 40 \times \frac{1}{2}=40\end{aligned}$<br/>$A: B=40: 1$</div>


tags: ['Physics', 'Motion In Two Dimensions', 'TS EAMCET', 'TS EAMCET 2001']
source_db: MarksBatch1_P1.db
title:
an-object-is-projected-with-a-velocity-of-20-m-s-making-an-angle-of-4-5-with-horizontal-the-equation-for-the-trajectory-is-h-a-x-b-x-2-where-h-is-heig

slug:
an-object-is-projected-with-a-velocity-of-20-m-s-making-an-angle-of-4-5-with-horizontal-the-equation-for-the-trajectory-is-h-a-x-b-x-2-where-h-is-heig-14927

question:
<div class="question">An object is projected with a velocity of $20 \mathrm{~m} / \mathrm{s}$ making an angle of $45^{\circ}$ with horizontal. The equation for the trajectory is $h=A x-B x^2$ where $h$ is height, $x$ is horizontal distance $A$ and $B$ are constants. The ratio $A: B$ is $\left(g=10 \mathrm{~ms}^{-2}\right)$</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">$1: 5$</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">$5: 1$</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">$1: 40$</span> </li><li class="correct"> <span class="option-label">D</span> <span class="option-data">$40: 1$</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">$40: 1$</span> </div>

answer:
<div class="solution">$u=20 \mathrm{~m} / \mathrm{s}, \theta=45^{\circ}$<br/>Equation of trajectory $h=A x-B x^2$ Standard equation<br/>$h=x \tan \theta-\frac{g x^2}{2 u^2 \cos ^2 \theta}$<br/>On comparing the two equations<br/>$\begin{aligned} A &amp; =\tan \theta, B=\frac{g}{2 u^2 \cos ^2 \theta} \\ \frac{A}{B} &amp; =\frac{\tan \theta}{\frac{g}{2} u^2 \cos ^2 \theta}=\frac{2 u^2 \cos ^2 \theta \tan \theta}{g} \\ &amp; =\frac{2 \times(20)^2 \cos ^2 45^{\circ} \tan 45^{\circ}}{10} \\ &amp; =\frac{2 \times 400 \times\left(\frac{1}{\sqrt{2}}\right)^2 \times 1}{10} \\ &amp; =2 \times 40 \times \frac{1}{2}=40\end{aligned}$<br/>$A: B=40: 1$</div>


tags: ['Physics', 'Waves and Sound', 'JEE Main']
source_db: MarksBatch1_P1.db
title:
an-object-of-density-2000-kg-m-3-is-hung-from-a-thin-light-wire-the-fundamental-frequency-of-the-transverse-waves-in-the-wire-is-200-hz-if-the-object--1

slug:
an-object-of-density-2000-kg-m-3-is-hung-from-a-thin-light-wire-the-fundamental-frequency-of-the-transverse-waves-in-the-wire-is-200-hz-if-the-object-1-32482

question:
<div class="question">An object of density $2000 \mathrm{~kg}-\mathrm{m}^{-3}$ is hung from a thin light wire. The fundamental frequency of the transverse waves in the wire is $200 \mathrm{~Hz}$. If the object is immersed in water such that half of its volume is submerged, then the fundamental frequency of the transverse waves in the wire is</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">200 Hz</span> </li><li class="correct"> <span class="option-label">B</span> <span class="option-data">173.2 Hz</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li><li class=""> <span class="option-label">C</span> <span class="option-data">100 Hz</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">141.4 Hz</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">173.2 Hz</span> </div>

answer:
<div class="solution">Fundamental frequency, initially<br/>$$<br/>n_1=\frac{1}{2 l} \sqrt{\frac{T}{\mu}}=\frac{1}{2 l} \sqrt{\frac{V g(2000)}{\mu}}<br/>$$<br/>Fundamental frequency, finally<br/>$$<br/>n_2=\frac{1}{2 l} \sqrt{\frac{V g\left(2000-\frac{1000}{2}\right)}{\mu}}<br/>$$<br/>(here we applied loss of weight due to upthrust)<br/>$$<br/>\begin{aligned}<br/>&amp; =\frac{1}{2 l} \sqrt{\frac{V g \times 1500}{\mu}} \\<br/>\Rightarrow \quad \frac{n_1}{n_2} &amp; =\sqrt{\frac{2000}{1500}}=\sqrt{\frac{4}{3}} \\<br/>\Rightarrow \quad n_2 &amp; =\frac{n_1 \times \sqrt{3}}{2}=100 \sqrt{3} \mathrm{~Hz}=173.2 \mathrm{~Hz}<br/>\end{aligned}<br/>$$</div>


tags: ['Physics', 'Waves and Sound', 'AP EAMCET', 'AP EAMCET 2018 (22 Apr Shift 2)']
source_db: MarksBatch1_P1.db
title:
an-object-of-density-2000-kg-m-3-is-hung-from-a-thin-light-wire-the-fundamental-frequency-of-the-transverse-waves-in-the-wire-is-200-hz-if-the-object-

slug:
an-object-of-density-2000-kg-m-3-is-hung-from-a-thin-light-wire-the-fundamental-frequency-of-the-transverse-waves-in-the-wire-is-200-hz-if-the-object-83673

question:
<div class="question">An object of density $2000 \mathrm{~kg}-\mathrm{m}^{-3}$ is hung from a thin light wire. The fundamental frequency of the transverse waves in the wire is $200 \mathrm{~Hz}$. If the object is immersed in water such that half of its volume is submerged, then the fundamental frequency of the transverse waves in the wire is</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">200 Hz</span> </li><li class="correct"> <span class="option-label">B</span> <span class="option-data">173.2 Hz</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li><li class=""> <span class="option-label">C</span> <span class="option-data">100 Hz</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">141.4 Hz</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">173.2 Hz</span> </div>

answer:
<div class="solution">Fundamental frequency, initially<br/>$$<br/>n_1=\frac{1}{2 l} \sqrt{\frac{T}{\mu}}=\frac{1}{2 l} \sqrt{\frac{V g(2000)}{\mu}}<br/>$$<br/>Fundamental frequency, finally<br/>$$<br/>n_2=\frac{1}{2 l} \sqrt{\frac{V g\left(2000-\frac{1000}{2}\right)}{\mu}}<br/>$$<br/>(here we applied loss of weight due to upthrust)<br/>$$<br/>\begin{aligned}<br/>&amp; =\frac{1}{2 l} \sqrt{\frac{V g \times 1500}{\mu}} \\<br/>\Rightarrow \quad \frac{n_1}{n_2} &amp; =\sqrt{\frac{2000}{1500}}=\sqrt{\frac{4}{3}} \\<br/>\Rightarrow \quad n_2 &amp; =\frac{n_1 \times \sqrt{3}}{2}=100 \sqrt{3} \mathrm{~Hz}=173.2 \mathrm{~Hz}<br/>\end{aligned}<br/>$$</div>


tags: ['Physics', 'Waves and Sound', 'NEET']
source_db: MarksBatch1_P1.db
title:
an-object-of-specific-gravity-is-hung-from-a-thin-steel-wire-the-fundamental-frequency-for-transverse-standing-waves-in-the-wire-is-300-hz-the-object-

slug:
an-object-of-specific-gravity-is-hung-from-a-thin-steel-wire-the-fundamental-frequency-for-transverse-standing-waves-in-the-wire-is-300-hz-the-object-85277

question:
<div class="question">An object of specific gravity <math><mi mathvariant="normal">Ï</mi></math> is hung from a thin steel wire. The fundamental frequency for transverse standing waves in the wire is <math xmlns="http://www.w3.org/1998/Math/MathML"><mn>300</mn><mo> </mo><mi>Hz</mi></math>. The object is immersed in water so that one half of its volume is submerged. The new fundamental frequency (in <math xmlns="http://www.w3.org/1998/Math/MathML"><mi>Hz</mi></math>) is:</div>

options:
<ul class="options"> <li class="correct"> <span class="option-label">A</span> <span class="option-data"><math><mn>300</mn><msup><mrow><mfenced separators="|"><mrow><mfrac><mrow><mn>2</mn><mi mathvariant="normal">Ï</mi><mo>-</mo><mn>1</mn></mrow><mrow><mn>2</mn><mi mathvariant="normal">Ï</mi></mrow></mfrac></mrow></mfenced></mrow><mrow><mfrac><mrow><mn>1</mn></mrow><mrow><mn>2</mn></mrow></mfrac></mrow></msup></math></span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li><li class=""> <span class="option-label">B</span> <span class="option-data"><math><mn>300</mn><msup><mrow><mfenced separators="|"><mrow><mfrac><mrow><mn>2</mn><mi mathvariant="normal">Ï</mi></mrow><mrow><mn>2</mn><mi mathvariant="normal">Ï</mi><mo>-</mo><mn>1</mn></mrow></mfrac></mrow></mfenced></mrow><mrow><mfrac><mrow><mn>1</mn></mrow><mrow><mn>2</mn></mrow></mfrac></mrow></msup></math></span> </li><li class=""> <span class="option-label">C</span> <span class="option-data"><math><mn>300</mn><mfenced separators="|"><mrow><mfrac><mrow><mn>2</mn><mi mathvariant="normal">Ï</mi></mrow><mrow><mn>2</mn><mi mathvariant="normal">Ï</mi><mo>-</mo><mn>1</mn></mrow></mfrac></mrow></mfenced></math></span> </li><li class=""> <span class="option-label">D</span> <span class="option-data"><math><mn>300</mn><mfenced separators="|"><mrow><mfrac><mrow><mn>2</mn><mi mathvariant="normal">Ï</mi><mo>-</mo><mn>1</mn></mrow><mrow><mn>2</mn><mi mathvariant="normal">Ï</mi></mrow></mfrac></mrow></mfenced></math></span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value"><math><mn>300</mn><msup><mrow><mfenced separators="|"><mrow><mfrac><mrow><mn>2</mn><mi mathvariant="normal">Ï</mi><mo>-</mo><mn>1</mn></mrow><mrow><mn>2</mn><mi mathvariant="normal">Ï</mi></mrow></mfrac></mrow></mfenced></mrow><mrow><mfrac><mrow><mn>1</mn></mrow><mrow><mn>2</mn></mrow></mfrac></mrow></msup></math></span> </div>

answer:
<div class="solution">The diagrammatic representation of the given problem is shown in the figure. The expression of the fundamental frequency is <math xmlns="http://www.w3.org/1998/Math/MathML"><mi>v</mi><mo>=</mo><mfrac><mn>1</mn><mrow><mn>2</mn><mi>l</mi></mrow></mfrac><msqrt><mfrac><mi>T</mi><mi mathvariant="normal">μ</mi></mfrac></msqrt></math><br/><br/><br/><img alt="" src="https://cdn-question-pool.getmarks.app/nta_abhyas/neet/images/ci/image7-3b4d7ad3-e5e1-487a-b9b6-88acf12063fb.png" style="max-width:100%; object-fit:contain"/><br/><br/><math xmlns="http://www.w3.org/1998/Math/MathML"><mi>T</mi><mo>=</mo><mi>m</mi><mi>g</mi><mo>=</mo><mi>v</mi><msup><mi>ρ</mi><mi mathvariant="normal">′</mi></msup><mi>g</mi></math> ; <math xmlns="http://www.w3.org/1998/Math/MathML"><mi>f</mi><mo>=</mo><mfrac><mn>1</mn><mrow><mn>2</mn><mi>l</mi></mrow></mfrac><msqrt><mfrac><mrow><mi>v</mi><msup><mi>ρ</mi><mi mathvariant="normal">′</mi></msup><mi>g</mi></mrow><mi mathvariant="normal">μ</mi></mfrac></msqrt></math><br/><br/><math xmlns="http://www.w3.org/1998/Math/MathML"><msup><mi>T</mi><mi mathvariant="normal">′</mi></msup><mo>=</mo><mi>m</mi><mi>g</mi><mo>-</mo><mfrac><mi>V</mi><mn>2</mn></mfrac><msub><mi>ρ</mi><mi mathvariant="normal">w</mi></msub><mi>g</mi></math><br/><br/><math xmlns="http://www.w3.org/1998/Math/MathML"><msup><mi>f</mi><mi mathvariant="normal">′</mi></msup><mo>=</mo><mfrac><mn>1</mn><mrow><mn>2</mn><mi>l</mi></mrow></mfrac><msqrt><mfrac><mrow><mi>v</mi><msup><mi>ρ</mi><mi mathvariant="normal">′</mi></msup><mo>-</mo><mfrac><mi>v</mi><mn>2</mn></mfrac><msub><mi>ρ</mi><mi mathvariant="normal">w</mi></msub><mi>g</mi></mrow><mi mathvariant="normal">μ</mi></mfrac></msqrt></math><br/><br/><math xmlns="http://www.w3.org/1998/Math/MathML"><mfrac><msup><mi>f</mi><mi mathvariant="normal">′</mi></msup><mi>f</mi></mfrac><mo>=</mo><msqrt><mfrac><mrow><mn>2</mn><msup><mi mathvariant="normal">ρ</mi><mi mathvariant="normal">′</mi></msup><mo>-</mo><msub><mi mathvariant="normal">ρ</mi><mi mathvariant="normal">w</mi></msub></mrow><mrow><mn>2</mn><msup><mi mathvariant="normal">ρ</mi><mi mathvariant="normal">′</mi></msup></mrow></mfrac></msqrt><mfrac><msup><mi mathvariant="normal">ρ</mi><mi mathvariant="normal">′</mi></msup><msub><mi mathvariant="normal">ρ</mi><mi mathvariant="normal">w</mi></msub></mfrac><mo>=</mo><mi mathvariant="normal">s</mi><mi mathvariant="normal">p</mi><mi mathvariant="normal">e</mi><mi mathvariant="normal">c</mi><mi mathvariant="normal">i</mi><mi mathvariant="normal">f</mi><mi mathvariant="normal">i</mi><mi mathvariant="normal">c</mi><mi mathvariant="normal"> </mi><mi mathvariant="normal">g</mi><mi mathvariant="normal">r</mi><mi mathvariant="normal">a</mi><mi mathvariant="normal">v</mi><mi mathvariant="normal">i</mi><mi mathvariant="normal">t</mi><mi mathvariant="normal">y</mi><mo>=</mo><mi mathvariant="normal">ρ</mi></math><br/><br/><math xmlns="http://www.w3.org/1998/Math/MathML"><msup><mi>f</mi><mi mathvariant="normal">′</mi></msup><mo>=</mo><mn>300</mn><msqrt><mfrac><mrow><mn>2</mn><mi mathvariant="normal">ρ</mi><mo>-</mo><mn>1</mn></mrow><mrow><mn>2</mn><mi mathvariant="normal">ρ</mi></mrow></mfrac></msqrt><mi mathvariant="normal"> </mi><mi mathvariant="normal">H</mi><mi mathvariant="normal">z</mi></math></div>


tags: ['Mathematics', 'Probability', 'NDA', 'NDA 2010 (Phase 1)']
source_db: MarksBatch1_P1.db
title:
an-observed-event-b-can-occur-after-one-of-the-three-events-a-1-a-2-a-3-if-p-a-1-p-a-2-04-p-a-3-02-and-p-b-a-1-025-p-b-a-2-04-p-b-a-3-0125-what-is-the

slug:
an-observed-event-b-can-occur-after-one-of-the-three-events-a-1-a-2-a-3-if-p-a-1-p-a-2-04-p-a-3-02-and-p-b-a-1-025-p-b-a-2-04-p-b-a-3-0125-what-is-the-97357

question:
<div class="question">An observed event $B$ can occur after one of the three events $A_{1}, A_{2}, A_{3} .$ If<br/>$P\left(A_{1}\right)=P\left(A_{2}\right)=0.4, P\left(A_{3}\right)=0.2$ and $P\left(B / A_{1}\right)=0.25, P\left(B / A_{2}\right)$<br/>$=0.4, P\left(B / A_{3}\right)=0.125$, what is the probability of $A_{1}$ after observing $B$ ?</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">$\frac{1}{3}$</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">$\frac{6}{19}$</span> </li><li class="correct"> <span class="option-label">C</span> <span class="option-data">$\frac{20}{57}$</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li><li class=""> <span class="option-label">D</span> <span class="option-data">$\frac{2}{5}$</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">$\frac{20}{57}$</span> </div>

answer:
<div class="solution">By Baye's theorem Required probability $=P\left(A_{1} / B\right)$ $=\frac{P\left(A_{1}\right) P\left(B / A_{1}\right)}{P\left(A_{1}\right) P\left(B / A_{1}\right)+P\left(A_{2}\right) P\left(B / A_{2}\right)+P\left(A_{3}\right) P\left(B / A_{3}\right)}$<br/>$=\frac{0.4 \times 0.25}{0.4 \times 0.25+0.4 \times 0.4+0.2 \times 0.125}$<br/>$=\frac{0.1}{0.1+0.16+0.025}=\frac{0.1}{0.285}=\frac{20}{57}$</div>


tags: ['Biology', 'Anatomy of Flowering Plants', 'NEET', 'NEET 2014']
source_db: MarksBatch1_P1.db
title:
an-old-piece-of-dicot-stem-and-a-dicot-root-is-given-to-a-candidate-during-practical-examination-which-of-the-following-anatomical-structures-can-be-u-1

slug:
an-old-piece-of-dicot-stem-and-a-dicot-root-is-given-to-a-candidate-during-practical-examination-which-of-the-following-anatomical-structures-can-be-u-1-80635

question:
<div class="question">An old piece of dicot stem and a dicot root is given to a candidate during practical examination. Which of the following anatomical structures can be used to distinguish between the two?</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">Secondary xylem</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">Secondary phloem</span> </li><li class="correct"> <span class="option-label">C</span> <span class="option-data">Protoxylem</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li><li class=""> <span class="option-label">D</span> <span class="option-data">Cortical cells</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">Protoxylem</span> </div>

answer:
<div class="solution">The first formed primary xylem elements are called protoxylem and the later formed primary xylem is called metaxylem. In stems, the protoxylem lies towards the centre (pith) and the metaxylem lies towards the periphery of the organ. This type of primary xylem is called endarch. In roots, the protoxylem lies towards periphery and metaxylem lies towards the centre. Such an arrangement of primary xylem is called an exarch.</div>


tags: ['Biology', 'Anatomy of Flowering Plants', 'NEET']
source_db: MarksBatch1_P1.db
title:
an-old-piece-of-dicot-stem-and-a-dicot-root-is-given-to-a-candidate-during-practical-examination-which-of-the-following-anatomical-structures-can-be-u

slug:
an-old-piece-of-dicot-stem-and-a-dicot-root-is-given-to-a-candidate-during-practical-examination-which-of-the-following-anatomical-structures-can-be-u-37476

question:
<div class="question">An old piece of dicot stem and a dicot root is given to a candidate during practical examination. Which of the following anatomical structures can be used to distinguish between the two?</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">Secondary xylem</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">Secondary phloem</span> </li><li class="correct"> <span class="option-label">C</span> <span class="option-data">Protoxylem</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li><li class=""> <span class="option-label">D</span> <span class="option-data">Cortical cells</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">Protoxylem</span> </div>

answer:
<div class="solution">The first formed primary xylem elements are called protoxylem and the later formed primary xylem is called metaxylem. In stems, the protoxylem lies towards the centre (pith) and the metaxylem lies towards the periphery of the organ. This type of primary xylem is called endarch. In roots, the protoxylem lies towards periphery and metaxylem lies towards the centre. Such an arrangement of primary xylem is called an exarch.</div>


tags: ['Physics', 'Waves and Sound', 'AP EAMCET', 'AP EAMCET 2022 (08 Jul Shift 1)']
source_db: MarksBatch1_P1.db
title:
an-open-air-pipe-of-length-80-cm-has-the-second-harmonic-frequency-equal-to-the-fundamental-frequency-of-a-closed-organ-air-pipe-the-length-of-the-clo

slug:
an-open-air-pipe-of-length-80-cm-has-the-second-harmonic-frequency-equal-to-the-fundamental-frequency-of-a-closed-organ-air-pipe-the-length-of-the-clo-18952

question:
<div class="question">An open air pipe of length $80 \mathrm{~cm}$ has the second harmonic frequency equal to the fundamental frequency of a closed organ air pipe. The length of the closed pipe is</div>

options:
<ul class="options"> <li class="correct"> <span class="option-label">A</span> <span class="option-data">$20 \mathrm{~cm}$</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li><li class=""> <span class="option-label">B</span> <span class="option-data">$40 \mathrm{~cm}$</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">$60 \mathrm{~cm}$</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">$10 \mathrm{~cm}$</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">$20 \mathrm{~cm}$</span> </div>

answer:
<div class="solution">We have<br/>$\left(\mathrm{f}_2\right)_{\text {Open }}=\left(\mathrm{f}_2\right)_{\text {Closed }}$<br/>$\begin{aligned} &amp; \Rightarrow 2 \cdot \frac{\mathrm{V}}{2 l_0}=\frac{\mathrm{V}}{4 l_{\mathrm{C}}} \\ &amp; \Rightarrow \frac{1}{80}=\frac{1}{4 l_{\mathrm{C}}} \quad\left[\because l_0=80 \mathrm{~cm}\right] \\ &amp; \Rightarrow l_{\mathrm{C}}=20 \mathrm{~cm}\end{aligned}$</div>


tags: ['Physics', 'Waves and Sound', 'NEET']
source_db: MarksBatch1_P1.db
title:
an-open-organ-pipe-has-a-fundamental-frequency-100-hz-what-frequency-will-be-produced-if-its-one-end-is-closed

slug:
an-open-organ-pipe-has-a-fundamental-frequency-100-hz-what-frequency-will-be-produced-if-its-one-end-is-closed-10355

question:
<div class="question">An open organ pipe has a fundamental frequency <math xmlns="http://www.w3.org/1998/Math/MathML"><mn>100</mn><mo> </mo><mi>Hz</mi></math>. What frequency will be produced if it's one end is closed?</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">100,200,300......</span> </li><li class="correct"> <span class="option-label">B</span> <span class="option-data">50,150,250......</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li><li class=""> <span class="option-label">C</span> <span class="option-data">50,100, 200,300....</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">50,100,150,200......</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">50,150,250......</span> </div>

answer:
<div class="solution">When one end is closed, <math><msub><mrow><mi>n</mi></mrow><mrow><mn>1</mn></mrow></msub><mo>=</mo><mfrac><mrow><mn>100</mn></mrow><mrow><mn>2</mn></mrow></mfrac><mo>=</mo><mn>50</mn><mi>Â </mi><mi mathvariant="normal">H</mi><mi mathvariant="normal">z</mi></math><br/><br/><math><msub><mrow><mi>n</mi></mrow><mrow><mn>2</mn></mrow></msub><mo>=</mo><mn>3</mn><msub><mrow><mi>n</mi></mrow><mrow><mn>1</mn></mrow></msub><mo>=</mo><mn>150</mn><mi mathvariant="normal">H</mi><mi mathvariant="normal">z</mi><mo>,</mo><mi>Â </mi><msub><mrow><mi>n</mi></mrow><mrow><mn>3</mn></mrow></msub><mo>=</mo><mn>5</mn><msub><mrow><mi>n</mi></mrow><mrow><mn>1</mn></mrow></msub><mo>=</mo><mn>250</mn><mi>Â </mi><mi mathvariant="normal">H</mi><mi mathvariant="normal">z</mi></math> and so on.</div>


tags: ['Physics', 'Waves and Sound', 'NEET']
source_db: MarksBatch1_P1.db
title:
an-open-organ-pipe-has-a-fundamental-frequency-of-300-hz-the-first-overtone-of-a-closed-organ-pipe-has-the-same-frequency-as-the-first-overtone-of-an-

slug:
an-open-organ-pipe-has-a-fundamental-frequency-of-300-hz-the-first-overtone-of-a-closed-organ-pipe-has-the-same-frequency-as-the-first-overtone-of-an-14232

question:
<div class="question">An open organ pipe has a fundamental frequency of <math> <mrow> <mn>300</mn><mtext>â</mtext><mtext>Hz</mtext></mrow> </math>. The first overtone of a closed organ pipe has the same frequency as the first overtone of an open organ pipe. How long is closed organ pipe? speed of sound = <math xmlns="http://www.w3.org/1998/Math/MathML"><mn>300</mn><msup><mtext> m s</mtext><mrow><mo>-</mo><mn>1</mn></mrow></msup></math></div>

options:
<ul class="options"> <li class="correct"> <span class="option-label">A</span> <span class="option-data"><math> <mrow> <mn>41.25</mn><mtext> cm</mtext></mrow> </math></span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li><li class=""> <span class="option-label">B</span> <span class="option-data"><math> <mrow> <mn>42.3</mn><mtext> cm</mtext></mrow></math></span> </li><li class=""> <span class="option-label">C</span> <span class="option-data"><math> <mrow> <mn>49.5</mn><mtext> cm</mtext></mrow></math></span> </li><li class=""> <span class="option-label">D</span> <span class="option-data"><math> <mrow> <mn>40.5</mn><mtext> cm</mtext></mrow></math></span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value"><math> <mrow> <mn>41.25</mn><mtext> cm</mtext></mrow> </math></span> </div>

answer:
<div class="solution">The fundamental frequency of an organ pipe<br/><br/><math><msub><mrow><mi>f</mi></mrow><mrow><mn>1</mn></mrow></msub><mo>=</mo><mfrac><mrow><mi>v</mi></mrow><mrow><mn>2</mn><msub><mrow><mi>l</mi></mrow><mrow><mn>0</mn></mrow></msub></mrow></mfrac></math><br/><br/><math><mo>â´</mo><mi> </mi><mi> </mi><mi> </mi><msub><mrow><mi>l</mi></mrow><mrow><mn>0</mn></mrow></msub><mo>=</mo><mfrac><mrow><mi>v</mi></mrow><mrow><mn>2</mn><msub><mrow><mi>f</mi></mrow><mrow><mn>1</mn></mrow></msub></mrow></mfrac><mo>=</mo><mfrac><mrow><mn>330</mn></mrow><mrow><mn>2</mn><mo>Ã</mo><mn>300</mn></mrow></mfrac><mo>=</mo><mn>0.55</mn><mi> </mi><mtext>m</mtext></math><br/><br/>Given, the first overtone of closed pipe = First overtone of open pipe<br/><br/>Hence, <math><mn>3</mn><mfenced separators="|"><mrow><mfrac><mrow><mi>v</mi></mrow><mrow><mn>4</mn><msub><mrow><mi>l</mi></mrow><mrow><mi>C</mi></mrow></msub></mrow></mfrac></mrow></mfenced><mo>=</mo><mn>2</mn><mfenced separators="|"><mrow><mfrac><mrow><mi>v</mi></mrow><mrow><mn>2</mn><msub><mrow><mi>l</mi></mrow><mrow><mn>0</mn></mrow></msub></mrow></mfrac></mrow></mfenced></math><br/><br/><math><mo>â</mo><msub><mrow><mi> </mi><mi> </mi><mi> </mi><mi> </mi><mi>l</mi></mrow><mrow><mi>C</mi></mrow></msub><mo>=</mo><mfrac><mrow><mn>3</mn></mrow><mrow><mn>4</mn></mrow></mfrac><mi> </mi><msub><mrow><mi>l</mi></mrow><mrow><mn>0</mn></mrow></msub><mo>=</mo><mfenced separators="|"><mrow><mfrac><mrow><mn>3</mn></mrow><mrow><mn>4</mn></mrow></mfrac></mrow></mfenced><mfenced separators="|"><mrow><mn>0.55</mn></mrow></mfenced></math><br/><br/><math><mo>â</mo><mi> </mi><mi> </mi><mi> </mi><mi> </mi><msub><mrow><mi>l</mi></mrow><mrow><mi>C</mi></mrow></msub><mo>=</mo><mn>0.4125</mn><mi> </mi><mtext>m</mtext><mi> </mi><mo>â</mo><msub><mrow><mi>l</mi></mrow><mrow><mi>C</mi></mrow></msub><mo>=</mo><mn>41.25</mn><mi> </mi><mtext>c</mtext><mtext>m</mtext></math></div>


tags: ['Physics', 'Waves and Sound', 'MHT CET', 'MHT CET 2023 (10 May Shift 1)']
correct_option: <div class="correct-answer"> The correct answer is: <span class="option-value">$2: 1$</span> </div>
source_db: MarksBatch1_P1.db
title:
an-open-organ-pipe-having-fundamental-frequency-n-is-in-unison-with-a-vibrating-string-if-the-tube-is-dipped-in-water-so-that-75-of-the-length-of-the-

slug:
an-open-organ-pipe-having-fundamental-frequency-n-is-in-unison-with-a-vibrating-string-if-the-tube-is-dipped-in-water-so-that-75-of-the-length-of-the-33355

question:
<div class="question">An open organ pipe having fundamental frequency (n) is in unison with a vibrating string. If the tube is dipped in water so that $75 \%$ of the length of the tube is inside the water then the ratio of fundamental frequency of the air column of dipped tube with that of string will be (Neglect end corrections)</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">$1: 1$</span> </li><li class="correct"> <span class="option-label">B</span> <span class="option-data">$2: 1$</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li><li class=""> <span class="option-label">C</span> <span class="option-data">$2: 3$</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">$3: 2$</span> </li> </ul>

answer:
<div class="solution">$\mathrm{n}_{\text {open }}=\frac{\mathrm{v}}{2 \mathrm{~L}}.... (i)$<br/>When dipped in water, pipe becomes closed at one end and open at the other.<br/>Length available for resonance is<br/>$\begin{aligned}<br/>l_1 &amp; =25 \% \times \mathrm{L} \\<br/>&amp; =\mathrm{L} \times \frac{25}{100} \\<br/>&amp; =\mathrm{L} / 4<br/>\end{aligned}$<br/>$\therefore \quad \mathrm{n}_{\text {closed }}=\frac{\mathrm{v}}{4 l_1}=\frac{\mathrm{v}}{4 \times \frac{\mathrm{L}}{4}}=\frac{\mathrm{v}}{\mathrm{L}}.... (ii)$<br/>Comparing (i) and (ii),<br/>$\therefore \quad \frac{\mathrm{n}_{\text {closed }}}{\mathrm{n}_{\text {open }}}=\frac{\left(\frac{\mathrm{v}}{\mathrm{L}}\right)^{\prime}}{\left(\frac{\mathrm{v}}{2 \mathrm{~L}}\right)}=\frac{2}{1}$</div>


tags: ['Physics', 'Waves and Sound', 'NEET']
source_db: MarksBatch1_P1.db
title:
an-open-organ-pipe-is-closed-suddenly-with-the-result-that-the-second-overtone-of-the-closed-pipe-is-found-to-be-higher-in-frequency-by-100-than-the-f

slug:
an-open-organ-pipe-is-closed-suddenly-with-the-result-that-the-second-overtone-of-the-closed-pipe-is-found-to-be-higher-in-frequency-by-100-than-the-f-79002

question:
<div class="question">An open organ pipe is closed suddenly with the result that the second overtone of the closed pipe is found to be higher in frequency by <math xmlns="http://www.w3.org/1998/Math/MathML"><mn>100</mn></math> than the first overtone of the original pipe. Then the fundamental frequency of the open pipe is</div>

options:
<ul class="options"> <li class="correct"> <span class="option-label">A</span> <span class="option-data"><math xmlns="http://www.w3.org/1998/Math/MathML"><mn>200</mn><mo> </mo><msup><mi mathvariant="normal">s</mi><mrow><mo>-</mo><mn>1</mn></mrow></msup></math></span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li><li class=""> <span class="option-label">B</span> <span class="option-data"><math xmlns="http://www.w3.org/1998/Math/MathML"><mn>100</mn><mo> </mo><msup><mi mathvariant="normal">s</mi><mrow><mo>-</mo><mn>1</mn></mrow></msup></math></span> </li><li class=""> <span class="option-label">C</span> <span class="option-data"><math xmlns="http://www.w3.org/1998/Math/MathML"><mn>250</mn><mo> </mo><msup><mi mathvariant="normal">s</mi><mrow><mo>-</mo><mn>1</mn></mrow></msup></math></span> </li><li class=""> <span class="option-label">D</span> <span class="option-data"><math xmlns="http://www.w3.org/1998/Math/MathML"><mn>150</mn><mo> </mo><msup><mi mathvariant="normal">s</mi><mrow><mo>-</mo><mn>1</mn></mrow></msup></math></span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value"><math xmlns="http://www.w3.org/1998/Math/MathML"><mn>200</mn><mo> </mo><msup><mi mathvariant="normal">s</mi><mrow><mo>-</mo><mn>1</mn></mrow></msup></math></span> </div>

answer:
<div class="solution">Frequency of second overtone (fifth harmonic) of close pipe<br/><br/><math xmlns="http://www.w3.org/1998/Math/MathML"><mo>=</mo><mfrac><mrow><mn>5</mn><mi mathvariant="normal">v</mi><mo>/4</mo></mrow><mi mathvariant="normal">l</mi></mfrac></math><br/><br/>Frequency of first overtone (second harmonic) of an open pipe<br/><br/><math xmlns="http://www.w3.org/1998/Math/MathML"><mo>=</mo><mfrac><mrow><mn>2</mn><mi mathvariant="normal">v</mi></mrow><mrow><mn>2</mn><mi mathvariant="normal">l</mi></mrow></mfrac></math><br/><br/>Accordingly,<br/><br/><math xmlns="http://www.w3.org/1998/Math/MathML"><mfrac><mrow><mn>5</mn><mi mathvariant="normal">v</mi></mrow><mrow><mn>4</mn><mi mathvariant="normal">l</mi></mrow></mfrac><mo>-</mo><mfrac><mrow><mn>2</mn><mi mathvariant="normal">v</mi></mrow><mrow><mn>2</mn><mi mathvariant="normal">l</mi></mrow></mfrac><mo>=</mo><mn>100</mn></math><br/><br/>Or<br/><br/><math xmlns="http://www.w3.org/1998/Math/MathML"><mfrac><mi mathvariant="normal">v</mi><mrow><mn>4</mn><mi mathvariant="normal">l</mi></mrow></mfrac><mo>=</mo><mn>100</mn></math><br/><br/>Or<br/><br/><math xmlns="http://www.w3.org/1998/Math/MathML"><mi mathvariant="normal">v</mi><mo>=</mo><mn>400</mn><mi mathvariant="normal">l</mi></math><br/><br/>The fundamental frequency of open pipe<br/><br/><math xmlns="http://www.w3.org/1998/Math/MathML"><mo>=</mo><mfrac><mi mathvariant="normal">v</mi><mrow><mn>2</mn><mi mathvariant="normal">l</mi></mrow></mfrac><mo>=</mo><mfrac><mrow><mn>400</mn><mi mathvariant="normal">l</mi></mrow><mrow><mn>2</mn><mi mathvariant="normal">l</mi></mrow></mfrac><mo>=</mo><mn>200</mn><mo> </mo><msup><mi mathvariant="normal">s</mi><mrow><mo>-</mo><mn>1</mn></mrow></msup></math></div>


title: an-open-organ-pipe-of-length-l-vibrates-in-its-fundamental-mode-the-pressure-variation-is-maximum
tags: ['Physics', 'Waves and Sound', 'NEET']
source_db: MarksBatch1_P1.db
slug:
an-open-organ-pipe-of-length-l-vibrates-in-its-fundamental-mode-the-pressure-variation-is-maximum-21831

question:
<div class="question">An open organ pipe of length <math><mi>l</mi> </math> vibrates in its fundamental mode. The pressure variation is maximum</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">At the two ends</span> </li><li class="correct"> <span class="option-label">B</span> <span class="option-data">At the middle of the pipe</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li><li class=""> <span class="option-label">C</span> <span class="option-data">At the distance <math> <mrow> <mfrac> <mi>l</mi> <mn>8</mn> </mfrac> </mrow></math> inside the ends</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">At the distance <math> <mrow> <mfrac> <mi>l</mi> <mn>4</mn> </mfrac> </mrow> </math> inside the ends</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">At the middle of the pipe</span> </div>

answer:
<div class="solution">The first normal mode of vibration is called fundamental mode.<br/><br/><br/><img alt="" src="https://cdn-question-pool.getmarks.app/nta_abhyas/neet/images/ci/image9-0da57ab7-3c2e-4416-aea0-2b750a06d08e.jpg" style="width: 258px; height: 141px;"/><br/><br/>For first normal mode of vibration<br/><br/><math><mi>l</mi><mo>=</mo><mfrac><mrow><msub><mrow><mi>Î»</mi></mrow><mrow><mn>1</mn></mrow></msub></mrow><mrow><mn>2</mn></mrow></mfrac></math><br/><br/>Since, the pressure vibration is maximum at node,<br/><br/>Hence, the pressure variation is maximum at the<br/><br/><math><mi>x</mi><mo>=</mo><mfrac><mrow><mi>l</mi></mrow><mrow><mn>2</mn></mrow></mfrac></math></div>


tags: ['Physics', 'Waves and Sound', 'AP EAMCET', 'AP EAMCET 2017 (25 Apr Shift 2)']
answer: <div class="solution">No solution. Refer to answer key.</div>
source_db: MarksBatch1_P1.db
title:
an-open-pipe-and-a-closed-pipe-have-fundamental-frequencies-n-1-and-n-2-respectively-they-are-combined-to-form-a-closed-pipe-fundamental-frequency-of-

slug:
an-open-pipe-and-a-closed-pipe-have-fundamental-frequencies-n-1-and-n-2-respectively-they-are-combined-to-form-a-closed-pipe-fundamental-frequency-of-64478

question:
<div class="question">An open pipe and a closed pipe have fundamental frequencies $n_1$ and $n_2$ respectively. They are combined to form a closed pipe. Fundamental frequency of the combined pipe is</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">$\mathrm{n}_1+\mathrm{n}_2$</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">$\mathrm{n}_1-\mathrm{n}_2$</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">$\frac{\mathrm{n}_1 \mathrm{n}_2}{\mathrm{n}_1-2 \mathrm{n}_2}$</span> </li><li class="correct"> <span class="option-label">D</span> <span class="option-data">$\frac{\mathrm{n}_1 \mathrm{n}_2}{\mathrm{n}_1+2 \mathrm{n}_2}$</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">$\frac{\mathrm{n}_1 \mathrm{n}_2}{\mathrm{n}_1+2 \mathrm{n}_2}$</span> </div>


tags: ['Physics', 'Waves and Sound', 'COMEDK', 'COMEDK 2016']
source_db: MarksBatch1_P1.db
title:
an-open-pipe-emits-a-fundamental-frequency-n-when-it-emits-the-3rd-harmonic-then-the-pipe-can-accommodate

slug:
an-open-pipe-emits-a-fundamental-frequency-n-when-it-emits-the-3rd-harmonic-then-the-pipe-can-accommodate-92518

question:
<div class="question">An open pipe emits a fundamental frequency $n$ when it emits the 3rd harmonic, then the pipe can accommodate</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">2 nodes, 2 anti-nodes</span> </li><li class="correct"> <span class="option-label">B</span> <span class="option-data">3 nodes, 4 anti-nodes</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li><li class=""> <span class="option-label">C</span> <span class="option-data">3 nodes, 3 anti-nodes</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">1 node, 2 anti-nodes</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">3 nodes, 4 anti-nodes</span> </div>

answer:
<div class="solution">For third harmonic, $n=3$. So, for an open pipe, the propagation of waves can be shown as<br/><br/><img src="https://cdn-question-pool.getmarks.app/pyq/comedk/nAD42sT4jsiTxBNp_zl9JIATvg04-KL3ZkYHLVdDva4.original.fullsize.png"/><br/><br/>$\therefore$ Nodes $=3$ and anti-nodes $=4$</div>


tags: ['Physics', 'Waves and Sound', 'COMEDK', 'COMEDK 2012']
correct_option: <div class="correct-answer"> The correct answer is: <span class="option-value">$1: 1$</span> </div>
source_db: MarksBatch1_P1.db
title:
an-open-pipe-immersed-in-water-to-half-its-length-the-ratio-of-the-fundamental-frequency-of-the-pipe-before-and-after-immersion-in-water-is

slug:
an-open-pipe-immersed-in-water-to-half-its-length-the-ratio-of-the-fundamental-frequency-of-the-pipe-before-and-after-immersion-in-water-is-13573

question:
<div class="question">An open pipe immersed in water to half its length. The ratio of the fundamental frequency of the pipe before and after immersion in water is</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">$1: 2$</span> </li><li class="correct"> <span class="option-label">B</span> <span class="option-data">$1: 1$</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li><li class=""> <span class="option-label">C</span> <span class="option-data">$1: 3$</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">$1: 4$</span> </li> </ul>

answer:
<div class="solution">Let $L_{o}$ be the length of air column in pipe. After immersion,<br/>$$<br/>L_{c}=\frac{L_{0}}{2}<br/>$$<br/>Fundamental frequency in open pipe, $f_{o}=\frac{v}{2 L_{0}}$<br/>Fundamental frequency in closed pipe, $f_{c}=\frac{v}{4 L_{c}^{r}}$<br/>$$<br/>\therefore \quad \frac{f_{o}}{f_{c}}=\frac{\frac{v}{2 L_{o}}}{\frac{v}{4 L_{c}}}=2\left(\frac{L_{c}}{L_{o}}\right)=2\left(\frac{L_{o}}{2 L_{o}}\right)=1: 1<br/>$$</div>


tags: ['Physics', 'Waves and Sound', 'NEET']
correct_option: <div class="correct-answer"> The correct answer is: <span class="option-value">200</span> </div>
source_db: MarksBatch1_P1.db
title:
an-open-pipe-is-suddenly-closed-at-one-end-with-the-result-that-the-frequency-of-third-harmonic-of-the-closed-pipe-is-found-to-be-higher-by-100-hz-tha

slug:
an-open-pipe-is-suddenly-closed-at-one-end-with-the-result-that-the-frequency-of-third-harmonic-of-the-closed-pipe-is-found-to-be-higher-by-100-hz-tha-48563

question:
<div class="question">An open pipe is suddenly closed at one end with the result that the frequency of third harmonic of the closed pipe is found to be higher by 100 Hz than the fundamental frequency of the open pipe. The fundamental frequency of the open pipe is</div>

options:
<ul class="options"> <li class="correct"> <span class="option-label">A</span> <span class="option-data">200</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li><li class=""> <span class="option-label">B</span> <span class="option-data">300</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">240</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">480</span> </li> </ul>

answer:
<div class="solution">Length of the organ pipe is same in both the cases. Fundamental frequency of open pipe is <math> <mrow> <msub> <mtext>f</mtext> <mn>1</mn> </msub> <mo>=</mo> <mfrac> <mrow> <mtext>v</mtext> </mrow> <mrow> <mn>2</mn> <mtext mathvariant="italic">l</mtext> </mrow> </mfrac> </mrow> </math> Frequency of third harmonic of closed pipe will be.<br/><br/>                  <math> <mrow> <msub> <mrow> <mi></mi><mi></mi><mi></mi><mi></mi><mi></mi><mi></mi><mi>f</mi><mo>â¡</mo> </mrow> <mn>2</mn> </msub> <mo>=</mo> <mn>3</mn> <mfenced close=")" open="(" separators=","> <mrow> <mfrac> <mrow> <mi></mi><mi></mi><mi></mi><mi></mi><mi></mi><mi></mi><mi>v</mi><mo>â¡</mo> </mrow> <mrow> <mn>4</mn> <mi></mi><mi></mi><mi></mi><mi></mi><mi></mi><mi></mi><mi>l</mi><mo>â¡</mo> </mrow> </mfrac> </mrow> </mfenced> </mrow> </math><br/><br/>Given that, <math> <mrow> <msub> <mrow> <mi></mi><mi></mi><mi></mi><mi></mi><mi></mi><mi></mi><mi>f</mi><mo>â¡</mo> </mrow> <mn>2</mn> </msub> <mo>=</mo> <msub> <mrow> <mi></mi><mi></mi><mi></mi><mi></mi><mi></mi><mi></mi><mi>f</mi><mo>â¡</mo> </mrow> <mn>1</mn> </msub> <mo>+</mo> <mn>1</mn> <mn>0</mn> <mn>0</mn> </mrow> </math><br/><br/>or               <math> <mrow> <msub> <mrow> <mi></mi><mi></mi><mi></mi><mi></mi><mi></mi><mi></mi><mi>f</mi><mo>â¡</mo> </mrow> <mn>2</mn> </msub> <mo>-</mo> <msub> <mrow> <mi></mi><mi></mi><mi></mi><mi></mi><mi></mi><mi></mi><mi>f</mi><mo>â¡</mo> </mrow> <mn>1</mn> </msub> <mo>=</mo> <mn>1</mn> <mn>0</mn> <mn>0</mn> </mrow> </math><br/><br/>or               <math> <mrow> <mfrac> <mrow> <mn>3</mn> </mrow> <mrow> <mn>4</mn> </mrow> </mfrac> <mfenced close=")" open="(" separators=","> <mrow> <mfrac> <mrow> <mi></mi><mi></mi><mi></mi><mi></mi><mi></mi><mi></mi><mi>v</mi><mo>â¡</mo> </mrow> <mrow> <mi></mi><mi></mi><mi></mi><mi></mi><mi></mi><mi></mi><mi>l</mi><mo>â¡</mo> </mrow> </mfrac> </mrow> </mfenced> <mo>-</mo> <mfenced close=")" open="(" separators=","> <mrow> <mfrac> <mrow> <mn>1</mn> </mrow> <mrow> <mn>2</mn> </mrow> </mfrac> </mrow> </mfenced>  <mfenced close=")" open="(" separators=","> <mrow> <mfrac> <mrow> <mi></mi><mi></mi><mi></mi><mi></mi><mi></mi><mi></mi><mi>v</mi><mo>â¡</mo> </mrow> <mrow> <mi></mi><mi></mi><mi></mi><mi></mi><mi></mi><mi></mi><mi>l</mi><mo>â¡</mo> </mrow> </mfrac> </mrow> </mfenced> <mo>=</mo> <mn>1</mn> <mn>0</mn> <mn>0</mn> <mo>â</mo> <mfrac> <mrow> <mi></mi><mi></mi><mi></mi><mi></mi><mi></mi><mi></mi><mi>v</mi><mo>â¡</mo> </mrow> <mrow> <mn>4</mn> <mi></mi><mi></mi><mi></mi><mi></mi><mi></mi><mi></mi><mi>l</mi><mo>â¡</mo> </mrow> </mfrac> <mo>=</mo> <mn>1</mn> <mn>0</mn> <mn>0</mn> </mrow> </math><br/><br/><math> <mrow> <mo>â´</mo> </mrow> </math>               <math> <mrow> <mfrac> <mrow> <mi></mi><mi></mi><mi></mi><mi></mi><mi></mi><mi></mi><mi>v</mi><mo>â¡</mo> </mrow> <mrow> <mn>2</mn> <mi></mi><mi></mi><mi></mi><mi></mi><mi></mi><mi></mi><mi>l</mi><mo>â¡</mo> </mrow> </mfrac> <mtext> or </mtext> <msub> <mrow> <mi></mi><mi></mi><mi></mi><mi></mi><mi></mi><mi></mi><mi>f</mi><mo>â¡</mo> </mrow> <mn>1</mn> </msub> <mo>=</mo> <mn>2</mn> <mn>0</mn> <mn>0</mn> <mtext> Hz</mtext> </mrow> </math><br/><br/>Therefore, fundamental frequency of the open pipe is 200 Hz.</div>


title: an-open-pipe-of-length-vibrates-in-fundamental-mode-the-pressure-variation-is-maximum-at
slug: an-open-pipe-of-length-vibrates-in-fundamental-mode-the-pressure-variation-is-maximum-at-73962
tags: ['Physics', 'Waves and Sound', 'JEE Main']
source_db: MarksBatch1_P1.db
question:
<div class="question">An open pipe of length / vibrates in fundamental mode. The pressure variation is maximum at</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">$1 / 4$ from ends</span> </li><li class="correct"> <span class="option-label">B</span> <span class="option-data">The middle of pipe</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li><li class=""> <span class="option-label">C</span> <span class="option-data">The ends of pipe</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">At $1 / 8$ from ends of pipe middle of the pipe</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">The middle of pipe</span> </div>

answer:
<div class="solution">The pressure variation is maximum at a distance $1 / 2$ because the displacement node is pressure antinode</div>


tags: ['Physics', 'Waves and Sound', 'JEE Main']
source_db: MarksBatch1_P1.db
title:
an-open-pipe-of-sufficient-length-is-dipping-in-water-with-a-speed-v-vertically-if-at-any-instant-l-is-the-length-of-the-tube-above-water-then-the-rat

slug:
an-open-pipe-of-sufficient-length-is-dipping-in-water-with-a-speed-v-vertically-if-at-any-instant-l-is-the-length-of-the-tube-above-water-then-the-rat-74727

question:
<div class="question"><p>An open pipe of sufficient length is dipping in water with a speed <math xmlns="http://www.w3.org/1998/Math/MathML"><mi>v</mi></math> vertically. If at any instant <math xmlns="http://www.w3.org/1998/Math/MathML"><mi>l</mi></math> is the length of the tube above water. Then the rate at which fundamental frequency of pipe changes, is (speed of sound = <math xmlns="http://www.w3.org/1998/Math/MathML"><mi>c</mi></math>)<br/> <br/> <img alt="" src="https://cdn-question-pool.getmarks.app/nta_abhyas/jee_main/images/EM0021515_Question_1.jpg" style="max-width:100%; object-fit:contain"/></p> </div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data"><math xmlns="http://www.w3.org/1998/Math/MathML"><mfrac><mrow><mi>c</mi><mi>v</mi></mrow><mrow><mn>2</mn><msup><mi>l</mi><mn>2</mn></msup></mrow></mfrac></math><div id="gtx-trans" style="position: absolute; left: 132px; top: 41px;"><div class="gtx-trans-icon"> </div></div></span> </li><li class="correct"> <span class="option-label">B</span> <span class="option-data"><math xmlns="http://www.w3.org/1998/Math/MathML"><mfrac><mrow><mi>c</mi><mi>v</mi></mrow><mrow><mn>4</mn><msup><mi>l</mi><mn>2</mn></msup></mrow></mfrac></math></span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li><li class=""> <span class="option-label">C</span> <span class="option-data"><math xmlns="http://www.w3.org/1998/Math/MathML"><mfrac><mi>c</mi><mrow><mn>2</mn><msup><mi>v</mi><mn>2</mn></msup><msup><mi>l</mi><mn>2</mn></msup></mrow></mfrac></math><div id="gtx-trans" style="position: absolute; left: -13px; top: 41px;"><div class="gtx-trans-icon"> </div></div></span> </li><li class=""> <span class="option-label">D</span> <span class="option-data"><math xmlns="http://www.w3.org/1998/Math/MathML"><mfrac><mi>c</mi><mrow><mn>4</mn><msup><mi>v</mi><mn>2</mn></msup><msup><mi>l</mi><mn>2</mn></msup></mrow></mfrac></math></span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value"><math xmlns="http://www.w3.org/1998/Math/MathML"><mfrac><mrow><mi>c</mi><mi>v</mi></mrow><mrow><mn>4</mn><msup><mi>l</mi><mn>2</mn></msup></mrow></mfrac></math></span> </div>

answer:
<div class="solution">                <math xmlns="http://www.w3.org/1998/Math/MathML"><mi>f</mi><mo>=</mo><mfrac><mi>c</mi><mrow><mn>4</mn><mi>l</mi></mrow></mfrac></math><br/><br/><math xmlns="http://www.w3.org/1998/Math/MathML"><mo>∴           </mo><mfenced close="|" open="|"><mfrac><mtext>df</mtext><mtext>dt</mtext></mfrac></mfenced><mo>=</mo><mfrac><mtext>c</mtext><mrow><mn>4</mn><msup><mi>l</mi><mn>2</mn></msup></mrow></mfrac><mfenced close="|" open="|"><mfrac><mrow><mtext>d</mtext><mtext mathvariant="italic">l</mtext></mrow><mtext>dt</mtext></mfrac></mfenced><mo>=</mo><mfrac><mtext>cv</mtext><mrow><mn>4</mn><msup><mi>l</mi><mn>2</mn></msup></mrow></mfrac></math></div>


tags: ['Physics', 'Waves and Sound', 'JEE Main']
options: None
correct_option: <div class="correct-answer"> The correct answer is: <span class="option-value">4</span> </div>
source_db: MarksBatch1_P1.db
title:
an-open-pipe-when-closed-at-one-end-can-resonate-in-its-third-harmonic-with-a-frequency-which-is-100-hz-more-than-its-fundamental-frequency-as-an-open

slug:
an-open-pipe-when-closed-at-one-end-can-resonate-in-its-third-harmonic-with-a-frequency-which-is-100-hz-more-than-its-fundamental-frequency-as-an-open-98407

question:
<div class="question">An open pipe, when closed at one end, can resonate in its third harmonic with a frequency which is <math xmlns="http://www.w3.org/1998/Math/MathML"><mn>100</mn><mo> </mo><mi>Hz</mi></math> more than its fundamental frequency as an open pipe. If the fundamental frequency of the pipe when it is open at both ends is <!-- MathType@Translator@5@5@MathML2 (namespace attr).tdl@MathML 2.0 (namespace attr)@ --> <math xmlns="http://www.w3.org/1998/Math/MathML"><mn>50</mn><mi>n</mi><mo> </mo><mi>Hz</mi></math>, then the value of <math xmlns="http://www.w3.org/1998/Math/MathML"><mi>n</mi></math> is</div>

answer:
<div class="solution">Length of the organ pipe is same in both the cases. Fundamental frequency of open pipe is <math> <mrow> <msub> <mtext>f</mtext> <mn>1</mn> </msub> <mo>=</mo> <mfrac> <mrow> <mtext>v</mtext> </mrow> <mrow> <mn>2</mn> <mtext mathvariant="italic">l</mtext> </mrow> </mfrac> </mrow> </math> Frequency of third harmonic of closed pipe will be.<br/><br/>                  <math> <mrow> <msub> <mrow> <mi></mi><mi></mi><mi></mi><mi></mi><mi></mi><mi></mi><mi>f</mi><mo>â¡</mo> </mrow> <mn>2</mn> </msub> <mo>=</mo> <mn>3</mn> <mfenced close=")" open="(" separators=","> <mrow> <mfrac> <mrow> <mi></mi><mi></mi><mi></mi><mi></mi><mi></mi><mi></mi><mi>v</mi><mo>â¡</mo> </mrow> <mrow> <mn>4</mn> <mi></mi><mi></mi><mi></mi><mi></mi><mi></mi><mi></mi><mi>l</mi><mo>â¡</mo> </mrow> </mfrac> </mrow> </mfenced> </mrow> </math><br/><br/>Given that, <math> <mrow> <msub> <mrow> <mi></mi><mi></mi><mi></mi><mi></mi><mi></mi><mi></mi><mi>f</mi><mo>â¡</mo> </mrow> <mn>2</mn> </msub> <mo>=</mo> <msub> <mrow> <mi></mi><mi></mi><mi></mi><mi></mi><mi></mi><mi></mi><mi>f</mi><mo>â¡</mo> </mrow> <mn>1</mn> </msub> <mo>+</mo> <mn>1</mn> <mn>0</mn> <mn>0</mn> </mrow> </math><br/><br/>or               <math> <mrow> <msub> <mrow> <mi></mi><mi></mi><mi></mi><mi></mi><mi></mi><mi></mi><mi>f</mi><mo>â¡</mo> </mrow> <mn>2</mn> </msub> <mo>-</mo> <msub> <mrow> <mi></mi><mi></mi><mi></mi><mi></mi><mi></mi><mi></mi><mi>f</mi><mo>â¡</mo> </mrow> <mn>1</mn> </msub> <mo>=</mo> <mn>1</mn> <mn>0</mn> <mn>0</mn> </mrow> </math><br/><br/>or               <math> <mrow> <mfrac> <mrow> <mn>3</mn> </mrow> <mrow> <mn>4</mn> </mrow> </mfrac> <mfenced close=")" open="(" separators=","> <mrow> <mfrac> <mrow> <mi></mi><mi></mi><mi></mi><mi></mi><mi></mi><mi></mi><mi>v</mi><mo>â¡</mo> </mrow> <mrow> <mi></mi><mi></mi><mi></mi><mi></mi><mi></mi><mi></mi><mi>l</mi><mo>â¡</mo> </mrow> </mfrac> </mrow> </mfenced> <mo>-</mo> <mfenced close=")" open="(" separators=","> <mrow> <mfrac> <mrow> <mn>1</mn> </mrow> <mrow> <mn>2</mn> </mrow> </mfrac> </mrow> </mfenced>  <mfenced close=")" open="(" separators=","> <mrow> <mfrac> <mrow> <mi></mi><mi></mi><mi></mi><mi></mi><mi></mi><mi></mi><mi>v</mi><mo>â¡</mo> </mrow> <mrow> <mi></mi><mi></mi><mi></mi><mi></mi><mi></mi><mi></mi><mi>l</mi><mo>â¡</mo> </mrow> </mfrac> </mrow> </mfenced> <mo>=</mo> <mn>1</mn> <mn>0</mn> <mn>0</mn> <mo>â</mo> <mfrac> <mrow> <mi></mi><mi></mi><mi></mi><mi></mi><mi></mi><mi></mi><mi>v</mi><mo>â¡</mo> </mrow> <mrow> <mn>4</mn> <mi></mi><mi></mi><mi></mi><mi></mi><mi></mi><mi></mi><mi>l</mi><mo>â¡</mo> </mrow> </mfrac> <mo>=</mo> <mn>1</mn> <mn>0</mn> <mn>0</mn> </mrow> </math><br/><br/><math> <mrow> <mo>â´</mo> </mrow> </math>               <math> <mrow> <mfrac> <mrow> <mi></mi><mi></mi><mi></mi><mi></mi><mi></mi><mi></mi><mi>v</mi><mo>â¡</mo> </mrow> <mrow> <mn>2</mn> <mi></mi><mi></mi><mi></mi><mi></mi><mi></mi><mi></mi><mi>l</mi><mo>â¡</mo> </mrow> </mfrac> <mtext> or </mtext> <msub> <mrow> <mi></mi><mi></mi><mi></mi><mi></mi><mi></mi><mi></mi><mi>f</mi><mo>â¡</mo> </mrow> <mn>1</mn> </msub> <mo>=</mo> <mn>2</mn> <mn>0</mn> <mn>0</mn> <mtext> Hz</mtext> </mrow> </math><!-- MathType@Translator@5@5@MathML2 (namespace attr).tdl@MathML 2.0 (namespace attr)@ --> <math> <mrow> <mtext>50</mtext><mtext>.</mtext><mtext>â</mtext><mtext>n</mtext><mtext>â</mtext><mtext>Hz</mtext><mo>â</mo><mtext>n = 4</mtext></mrow> </math> <!-- MathType@End@5@5@ --><br/><br/>Therefore, fundamental frequency of the open pipe is 200 Hz. and <!-- MathType@Translator@5@5@MathML2 (namespace attr).tdl@MathML 2.0 (namespace attr)@ --> <math> <mrow> <mtext>n = 4</mtext></mrow> </math> <!-- MathType@End@5@5@ --></div>


tags: ['Physics', 'Waves and Sound', 'AIIMS', 'AIIMS 2004']
correct_option: <div class="correct-answer"> The correct answer is: <span class="option-value">6</span> </div>
source_db: MarksBatch1_P1.db
title:
an-organ-pipe-closed-at-one-end-has-fundamental-frequency-of-1500-hz-the-maximum-number-of-overtones-generated-by-this-pipe-which-a-normal-person-can-

slug:
an-organ-pipe-closed-at-one-end-has-fundamental-frequency-of-1500-hz-the-maximum-number-of-overtones-generated-by-this-pipe-which-a-normal-person-can-40277

question:
<div class="question">An organ pipe closed at one end has fundamental frequency of $1500 \mathrm{~Hz}$. The maximum number of overtones generated by this pipe which a normal person can hear is</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">14</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">13</span> </li><li class="correct"> <span class="option-label">C</span> <span class="option-data">6</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li><li class=""> <span class="option-label">D</span> <span class="option-data">9 .</span> </li> </ul>

answer:
<div class="solution">Human ear can hear frequencies upto $20,000 \mathrm{~Hz}$. So for closed pipe,<br/>overtone, $\mathrm{v}=\frac{n v}{4 L}=n \times$ fundamental frequency<br/>$$<br/>\therefore \quad 20,000=n \times 1500 \Rightarrow n \approx 13 \text {. }<br/>$$<br/>Maximum possible harmonics obtained<br/>$$<br/>=1,3,5,7,9,11,13 \ldots \ldots \ldots \ldots<br/>$$<br/>Therefore one can hear maximum upto $13^{\text {th }}$ harmonics. Overtone $=7-1=6$</div>


tags: ['Physics', 'Waves and Sound', 'NEET', 'NEET 2022 (Phase 2)']
source_db: MarksBatch1_P1.db
title:
an-organ-pipe-filled-with-a-gas-at-2-7-c-resonates-at-400-hz-in-its-fundamental-mode-if-it-is-filled-with-the-same-gas-at-9-0-c-the-resonance-frequenc

slug:
an-organ-pipe-filled-with-a-gas-at-2-7-c-resonates-at-400-hz-in-its-fundamental-mode-if-it-is-filled-with-the-same-gas-at-9-0-c-the-resonance-frequenc-77040

question:
<div class="question">An organ pipe filled with a gas at $27^{\circ} \mathrm{C}$ resonates at $400 \mathrm{~Hz}$ in its fundamental mode. If it is filled with the same gas at $90^{\circ} \mathrm{C}$, the resonance frequency at the same mode will be:</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">$420 \mathrm{~Hz}$</span> </li><li class="correct"> <span class="option-label">B</span> <span class="option-data">$440 \mathrm{~Hz}$</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li><li class=""> <span class="option-label">C</span> <span class="option-data">$484 \mathrm{~Hz}$</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">$512 \mathrm{~Hz}$</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">$440 \mathrm{~Hz}$</span> </div>

answer:
<div class="solution">As per question, we have;
<br/>frequency, $f=\frac{v}{4 l}$
<br/>Hence,
<br/>$\begin{array}{l}
<br/>\Rightarrow \frac{4 l}{f_2} =\frac{v_1}{v_2} \\
<br/>\Rightarrow \frac{400}{f_2} =\sqrt{\frac{\mathrm{T}_1}{\mathrm{~T}_2}} \\
<br/>\Rightarrow \frac{400}{f_2} =\sqrt{\frac{300}{363}} \\
<br/>\Rightarrow [\because \mathrm{V} \propto \sqrt{\mathrm{T}}] \\
<br/>\Rightarrow f_2 =\sqrt{\frac{363}{300}} \times 400 \\
<br/>\Rightarrow f_2 =440 \mathrm{~Hz}
<br/>\end{array}$</div>


tags: ['Physics', 'Waves and Sound', 'JEE Main']
source_db: MarksBatch1_P1.db
title:
an-organ-pipe-open-from-both-end-produces-5-beats-per-second-when-vibrated-with-a-source-of-frequency-200-hz-the-second-harmonic-of-the-same-pipes-pro-1

slug:
an-organ-pipe-open-from-both-end-produces-5-beats-per-second-when-vibrated-with-a-source-of-frequency-200-hz-the-second-harmonic-of-the-same-pipes-pro-1-14856

question:
<div class="question">An organ pipe, open from both end produces 5 beats per second when vibrated with a source of frequency $200 \mathrm{~Hz}$. The second harmonic of the same pipes produces 10 beats per second with a source of frequency $420 \mathrm{~Hz}$. The fundamental frequency of organ pipe is</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">$195 \mathrm{~Hz}$</span> </li><li class="correct"> <span class="option-label">B</span> <span class="option-data">$205 \mathrm{~Hz}$</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li><li class=""> <span class="option-label">C</span> <span class="option-data">$190 \mathrm{~Hz}$</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">$210 \mathrm{~Hz}$</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">$205 \mathrm{~Hz}$</span> </div>

answer:
<div class="solution">Let the fundamental frequency of organ pipe be $\mathrm{f}$
<br/> <br/>Case I : $f=200 \pm 5=205 \mathrm{~Hz}$ or $195 \mathrm{~Hz}$
<br/> <br/><img src="https://cdn-question-pool.getmarks.app/pyq/bitsat/ywxbrQVTdljHnpHBtHliQoE44rRoET_t4pqq9g_iL5g.original.fullsize.png"/><br/> <br/> <br/>Case II : frequency of 2 nd harmonic of organ pipe $=2 \mathrm{f}$ (as is clear from the second figure) $2 \mathrm{f}=420 \pm 10$ or $\mathrm{f}=210 \pm 5$ or $\mathrm{f}=205$ or 215
<br/> <br/>Hence fundamental frequency oforgan pipe $=205 \mathrm{~Hz}$</div>


tags: ['Physics', 'Waves and Sound', 'BITSAT', 'BITSAT 2020']
source_db: MarksBatch1_P1.db
title:
an-organ-pipe-open-from-both-end-produces-5-beats-per-second-when-vibrated-with-a-source-of-frequency-200-hz-the-second-harmonic-of-the-same-pipes-pro

slug:
an-organ-pipe-open-from-both-end-produces-5-beats-per-second-when-vibrated-with-a-source-of-frequency-200-hz-the-second-harmonic-of-the-same-pipes-pro-97268

question:
<div class="question">An organ pipe, open from both end produces 5 beats per second when vibrated with a source of frequency $200 \mathrm{~Hz}$. The second harmonic of the same pipes produces 10 beats per second with a source of frequency $420 \mathrm{~Hz}$. The fundamental frequency of organ pipe is</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">$195 \mathrm{~Hz}$</span> </li><li class="correct"> <span class="option-label">B</span> <span class="option-data">$205 \mathrm{~Hz}$</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li><li class=""> <span class="option-label">C</span> <span class="option-data">$190 \mathrm{~Hz}$</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">$210 \mathrm{~Hz}$</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">$205 \mathrm{~Hz}$</span> </div>

answer:
<div class="solution">Let the fundamental frequency of organ pipe be $\mathrm{f}$
<br/> <br/>Case I : $f=200 \pm 5=205 \mathrm{~Hz}$ or $195 \mathrm{~Hz}$
<br/> <br/><img src="https://cdn-question-pool.getmarks.app/pyq/bitsat/ywxbrQVTdljHnpHBtHliQoE44rRoET_t4pqq9g_iL5g.original.fullsize.png"/><br/> <br/> <br/>Case II : frequency of 2 nd harmonic of organ pipe $=2 \mathrm{f}$ (as is clear from the second figure) $2 \mathrm{f}=420 \pm 10$ or $\mathrm{f}=210 \pm 5$ or $\mathrm{f}=205$ or 215
<br/> <br/>Hence fundamental frequency oforgan pipe $=205 \mathrm{~Hz}$</div>


tags: ['Chemistry', 'Aldehydes and Ketones', 'JEE Main']
source_db: MarksBatch1_P1.db
title:
an-organic-compound-x-is-oxidized-by-using-acidified-k-2-c-r-2-o-7-the-product-obtained-reacts-with-phenyl-hydrazine-but-does-not-answer-silver-mtextr

slug:
an-organic-compound-x-is-oxidized-by-using-acidified-k-2-c-r-2-o-7-the-product-obtained-reacts-with-phenyl-hydrazine-but-does-not-answer-silver-mtextr-92578

question:
<div class="question">An organic compound X is oxidized by using acidified <math><msub><mrow><mtext>K</mtext></mrow><mrow><mn>2</mn></mrow></msub><mtext>C</mtext><msub><mrow><mtext>r</mtext></mrow><mrow><mn>2</mn></mrow></msub><msub><mrow><mtext>O</mtext></mrow><mrow><mn>7</mn></mrow></msub></math> . The product obtained reacts with phenyl hydrazine, but does not answer silver mtextrror test. The possible structure of X is</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data"><math><mtext>C</mtext><msub><mrow><mtext>H</mtext></mrow><mrow><mn>3</mn></mrow></msub><mtext>C</mtext><mtext>O</mtext><mtext>C</mtext><msub><mrow><mtext>H</mtext></mrow><mrow><mn>3</mn></mrow></msub></math></span> </li><li class="correct"> <span class="option-label">B</span> <span class="option-data"><math><msub><mrow><mfenced separators="|"><mrow><mtext>C</mtext><msub><mrow><mtext>H</mtext></mrow><mrow><mn>3</mn></mrow></msub></mrow></mfenced></mrow><mrow><mn>2</mn></mrow></msub><mtext>C</mtext><mtext>H</mtext><mtext>O</mtext><mtext>H</mtext></math></span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li><li class=""> <span class="option-label">C</span> <span class="option-data"><math><mtext>C</mtext><msub><mrow><mtext>H</mtext></mrow><mrow><mn>3</mn></mrow></msub><mtext>C</mtext><mtext>H</mtext><mtext>O</mtext></math></span> </li><li class=""> <span class="option-label">D</span> <span class="option-data"><math><mtext>C</mtext><msub><mrow><mtext>H</mtext></mrow><mrow><mn>3</mn></mrow></msub><mtext>C</mtext><msub><mrow><mtext>H</mtext></mrow><mrow><mn>2</mn></mrow></msub><mtext>O</mtext><mtext>H</mtext></math></span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value"><math><msub><mrow><mfenced separators="|"><mrow><mtext>C</mtext><msub><mrow><mtext>H</mtext></mrow><mrow><mn>3</mn></mrow></msub></mrow></mfenced></mrow><mrow><mn>2</mn></mrow></msub><mtext>C</mtext><mtext>H</mtext><mtext>O</mtext><mtext>H</mtext></math></span> </div>

answer:
<div class="solution">The oxidation product of X reacts with phenyl hydrazine, thus it contains <math><mo>&gt;</mo><mtext>C</mtext><mo>=</mo><mn>0</mn></math> group. The same product does not give silver mirror test. Thus, it is a ketone, because only aldehydes give silver mirror test.<br/><br/>Thus, the compound X must be <math><msup><mrow><mn>2</mn></mrow><mrow><mtext>o</mtext></mrow></msup></math> alcohol, as only secondary alcohols give ketones on oxidation and hence, X is <math><msub><mrow><mfenced separators="|"><mrow><mtext>C</mtext><msub><mrow><mtext>H</mtext></mrow><mrow><mn>3</mn></mrow></msub></mrow></mfenced></mrow><mrow><mn>2</mn></mrow></msub><mtext>C</mtext><mtext>H</mtext><mtext>O</mtext><mtext>H</mtext><mo>.</mo></math></div>


tags: ['Physics', 'Alternating Current', 'TS EAMCET', 'TS EAMCET 2018 (04 May Shift 2)']
source_db: MarksBatch1_P1.db
title:
an-oscillating-circuit-consisting-of-a-capacitor-with-capacitance-c-10-f-a-coil-with-inductance-l-60-h-and-active-resistance-r-10-the-mean-power-that-

slug:
an-oscillating-circuit-consisting-of-a-capacitor-with-capacitance-c-10-f-a-coil-with-inductance-l-60-h-and-active-resistance-r-10-the-mean-power-that-25176

question:
<div class="question">An oscillating circuit consisting of a capacitor with capacitance $C=10 \mu \mathrm{F}$, a coil with inductance $L=6.0 \mu \mathrm{H}$ and active resistance $R=10 \Omega$. The mean power that should be fed to the circuit to maintain undamped harmonic oscillations with an external driving power with $50 \mathrm{~Hz}$ and a $V_m$ of $280 \mathrm{~V}$ is</div>

options:
<ul class="options"> <li class="correct"> <span class="option-label">A</span> <span class="option-data">$3.8 \mathrm{~W}$</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li><li class=""> <span class="option-label">B</span> <span class="option-data">$48 \mathrm{~W}$</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">$3 \mathrm{~mW}$</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">$48 \mathrm{~mW}$</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">$3.8 \mathrm{~W}$</span> </div>

answer:
<div class="solution">$$<br/>\text { } R=10 \Omega L=6 \mu \mathrm{H}, C=10 \mu \mathrm{H}<br/>$$<br/><img src="https://cdn-question-pool.getmarks.app/pyq/ts_eamcet/MIKXGyY-GLqBFxr6OEStY2Jf1Pnb03BW5IHNp1-M6sM.original.fullsize.png"/><br/><br/>Impedence of the circuit,<br/>$$<br/>Z=\sqrt{R^2+\left(X_C-X_L\right)^2}<br/>$$<br/>Capacitive reactance, $X_C=\frac{1}{\omega C}=\frac{1}{2 \pi f C}$<br/>$$<br/>X_C=\frac{1}{2 \times 314 \times 50 \times 10 \times 10^{-6}}<br/>$$<br/><br/>$$<br/>=318.47 \Omega<br/>$$<br/>Inductive reactance $X_L=\omega L=2 \pi f L$<br/>$$<br/>\begin{aligned}<br/>X_L &amp; =2 \times 314 \times 50 \times 6 \times 10^{-6} \\<br/>&amp; =18.84 \times 10^{-4} \Omega<br/>\end{aligned}<br/>$$<br/>Resistance, $R=10 \Omega$<br/>$$<br/>\begin{gathered}<br/>Z=\sqrt{10^2+\left(318.4-18.84 \times 10^{-4}\right)^2} \\<br/>Z=\sqrt{100+(318.39)^2}=\sqrt{101477.36} \\<br/>Z=318.55 \Omega \\<br/>\text { rms current, } i_{\text {rms }}=\frac{V_{\text {rms }}}{Z}=\frac{V_0 / \sqrt{2}}{Z} \\<br/>i_{\text {rms }}=\frac{280}{\sqrt{2} \times 318.55}=0.621 \mathrm{~A}<br/>\end{gathered}<br/>$$<br/>As energy is only dissipated in resistance as heat and no power dissipates in capacitor and inductor, so average power dissipates as heat<br/>$$<br/>P=i_{\mathrm{rms}}^2 \cdot R<br/>$$<br/><br/>$$<br/>\begin{aligned}<br/>&amp; P=(0.621)^2 \times 10 \\<br/>&amp; P=3.8 \mathrm{~W}<br/>\end{aligned}<br/>$$<br/>$3.8 \mathrm{~W}$ power should be fed to maintain an undamped oscillation.</div>


tags: ['Chemistry', 'General Organic Chemistry', 'KCET', 'KCET 2010']
source_db: MarksBatch1_P1.db
title:
an-oxygen-containing-organic-compound-upon-oxidation-forms-a-carboxylic-acid-as-the-only-organic-product-with-its-molecular-mass-higher-by-14-units-th

slug:
an-oxygen-containing-organic-compound-upon-oxidation-forms-a-carboxylic-acid-as-the-only-organic-product-with-its-molecular-mass-higher-by-14-units-th-49368

question:
<div class="question">An oxygen containing organic compound upon oxidation forms a carboxylic acid as the only organic product with its molecular mass higher by 14 units. The organic compound is</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">an aldehyde</span> </li><li class="correct"> <span class="option-label">B</span> <span class="option-data">a primary alcohol</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li><li class=""> <span class="option-label">C</span> <span class="option-data">a secondary alcohol</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">a ketone</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">a primary alcohol</span> </div>

answer:
<div class="solution">Because the difference in mass between $-\mathrm{CH}_{2} \mathrm{OH}$ group and - $\mathrm{COOH}$ group is 14 , thus the compound which undergoes oxidation is a primary alcohol. ( $-\mathrm{CH}_{2} \mathrm{OH}$ is the functional group of primary alcohols.)<br/><br/><img src="https://cdn-question-pool.getmarks.app/pyq/kcet/xmpjD-_mJcvp3gC0n5ZuQlz-YkmobffBil3So-Zf91A.original.fullsize.png"/><br/></div>


tags: ['Mathematics', 'Probability', 'NDA', 'NDA 2015 (Phase 2)']
source_db: MarksBatch1_P1.db
title:
an-unbiased-coin-is-tossed-until-the-first-head-appears-or-until-four-tosses-are-completed-whichever-happens-earlier-which-of-the-following-statements

slug:
an-unbiased-coin-is-tossed-until-the-first-head-appears-or-until-four-tosses-are-completed-whichever-happens-earlier-which-of-the-following-statements-54759

question:
<div class="question">An unbiased coin is tossed until the first head appears or until four tosses are completed, whichever happens earlier. Which of the following statements is/are correct? <br/>$1$ The probability that no head is observed is $\frac{1}{16}$.<br/>$2$ The probability that the experiment ends with three<br/>tosses is $\frac{1}{8}$<br/>Select the correct answer using the code given below:</div>

answer:
<div class="solution">$\mathrm{S}=\{\mathrm{H}, \mathrm{TH}, \mathrm{TTH}$, TTTH, TTTT $\}$<br/>$\mathrm{P}(\mathrm{T})=\mathrm{P}(\mathrm{H})=\frac{1}{2}$<br/>[Probability of getting head or tail in a single toss] $\therefore$ Probability that no head is observed $=\mathrm{P}(\mathrm{TTTT})$ $=\mathrm{P}(\mathrm{T}) \mathrm{P}(\mathrm{T}) \mathrm{P}(\mathrm{T}) \mathrm{P}(\mathrm{T})$<br/>$=\frac{1}{2^{4}}=\frac{1}{16}$<br/>And the probability that the experiment ends with 3 tosses<br/>$=\mathrm{P}(\mathrm{TTH})$<br/>$=\mathrm{P}(\mathrm{T}) \mathrm{P}(\mathrm{T}) \mathrm{P}(\mathrm{H})$<br/>$=\frac{1}{8}$<br/>Hence, both statements are correct.</div>


title: an-unbiased-die-is-tossed-500-times-the-standard-deviation-of-getting-sixes-in-these-500-tosses-is
tags: ['Mathematics', 'Probability', 'MHT CET', 'MHT CET 2022 (06 Aug Shift 1)']
source_db: MarksBatch1_P1.db
slug:
an-unbiased-die-is-tossed-500-times-the-standard-deviation-of-getting-sixes-in-these-500-tosses-is-20557

question:
<div class="question">An unbiased die is tossed 500 times. The standard deviation of getting sixes in these 500 tosses is</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">$\frac{625}{9}$</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">$\sqrt{\frac{250}{3}}$</span> </li><li class="correct"> <span class="option-label">C</span> <span class="option-data">$\frac{25}{3}$</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li><li class=""> <span class="option-label">D</span> <span class="option-data">$\frac{250}{3}$</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">$\frac{25}{3}$</span> </div>

answer:
<div class="solution">$\mathrm{n}=500, \mathrm{P}=\frac{1}{6}, \mathrm{q}=\frac{5}{6}$<br/>S.D. $=\sqrt{\mathrm{npq}}=\sqrt{500 \times \frac{1}{6} \times \frac{5}{6}}=\sqrt{\frac{2500}{36}}=\frac{50}{6}=\frac{25}{3}$</div>


tags: ['Chemistry', 'Alcohols Phenols and Ethers', 'JEE Main']
source_db: MarksBatch1_P1.db
title:
an-unknown-alcohol-is-treated-with-the-lucas-reagent-to-determine-whether-the-alcohol-is-primary-secondary-or-tertiary-which-alcohol-reacts-fastest-an-1

slug:
an-unknown-alcohol-is-treated-with-the-lucas-reagent-to-determine-whether-the-alcohol-is-primary-secondary-or-tertiary-which-alcohol-reacts-fastest-an-1-35927

question:
<div class="question">An unknown alcohol is treated with the Lucas reagent to determine whether the alcohol is primary, secondary or tertiary. Which alcohol reacts fastest and by what mechansim?</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">Tertiary alcohol by  <math><msub><mrow><mi mathvariant="normal">S</mi></mrow><mrow><mi mathvariant="normal">N</mi></mrow></msub><mn>2</mn></math></span> </li><li class="correct"> <span class="option-label">B</span> <span class="option-data">Tertiary alcohol by  <math><msub><mrow><mi mathvariant="normal">S</mi></mrow><mrow><mi mathvariant="normal">N</mi></mrow></msub><mn>1</mn></math></span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li><li class=""> <span class="option-label">C</span> <span class="option-data">Secondary alcohol by  <math><msub><mrow><mi mathvariant="normal">S</mi></mrow><mrow><mi mathvariant="normal">N</mi></mrow></msub><mn>2</mn></math></span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">Secondary alcohol by  <math><msub><mrow><mi mathvariant="normal">S</mi></mrow><mrow><mi mathvariant="normal">N</mi></mrow></msub><mn>1</mn></math></span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">Tertiary alcohol by  <math><msub><mrow><mi mathvariant="normal">S</mi></mrow><mrow><mi mathvariant="normal">N</mi></mrow></msub><mn>1</mn></math></span> </div>

answer:
<div class="solution">The reaction of alcohol with Lucas reagent is mostly an  <math><msub><mrow><mi mathvariant="normal">S</mi></mrow><mrow><mi mathvariant="normal">N</mi></mrow></msub><mn>1</mn></math>  mechanism reaction and the rate of reaction is directly proportional to the carbocation stability formed in the reaction, hence tertiary alcohol will react fastest.</div>


tags: ['Chemistry', 'Alcohols Phenols and Ethers', 'JEE Main']
source_db: MarksBatch1_P1.db
title:
an-unknown-alcohol-is-treated-with-the-lucas-reagent-to-determine-whether-the-alcohol-is-primary-secondary-or-tertiary-which-alcohol-reacts-fastest-an-2

slug:
an-unknown-alcohol-is-treated-with-the-lucas-reagent-to-determine-whether-the-alcohol-is-primary-secondary-or-tertiary-which-alcohol-reacts-fastest-an-2-88003

question:
<div class="question">An unknown alcohol is treated with the "Lucas reagent" to determine whether the alcohol is primary, secondary or tertiary. Which alcohol reacts fastest and by what mechanism?</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">Tertiary alcohol by \( S_{N} 2 \)</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">Secondary alcohol by \( \mathrm{S}_{\mathrm{N}} 1 \)</span> </li><li class="correct"> <span class="option-label">C</span> <span class="option-data">Tertiary alcohol by \( S_{N} 1 \)</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li><li class=""> <span class="option-label">D</span> <span class="option-data">Secondary alcohol by \( \mathrm{S}_{\mathrm{N}} 2 \)</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">Tertiary alcohol by \( S_{N} 1 \)</span> </div>

answer:
<div class="solution"><blockquote><p>Lucas reagent is a mixture of conc. <math xmlns="http://www.w3.org/1998/Math/MathML"><mi>HCl</mi></math> and dry anhydrous <math xmlns="http://www.w3.org/1998/Math/MathML"><msub><mi>ZnCl</mi><mn>2</mn></msub></math>. <br/>In this reaction, a carbocation is formed as an intermediate and thus the stability and ease of carbocation formation determine the rate of the reaction as that's the slow step of the mechanism. Hence, the order of reactivity is tertiary alcohol &gt; secondary alcohol by <math xmlns="http://www.w3.org/1998/Math/MathML"><msub><mi mathvariant="normal">S</mi><mi mathvariant="normal">N</mi></msub><mn>1</mn></math> mechanism.<br/>Thus, with Lucas reagent, tertiary alcohol reacts fastest and by <math xmlns="http://www.w3.org/1998/Math/MathML"><msub><mi mathvariant="normal">S</mi><mi mathvariant="normal">N</mi></msub><mn>1</mn></math>mechanism.</p></blockquote></div>


tags: ['Chemistry', 'Alcohols Phenols and Ethers', 'JEE Main', 'JEE Main 2013 (07 Apr)']
source_db: MarksBatch1_P1.db
title:
an-unknown-alcohol-is-treated-with-the-lucas-reagent-to-determine-whether-the-alcohol-is-primary-secondary-or-tertiary-which-alcohol-reacts-fastest-an-3

slug:
an-unknown-alcohol-is-treated-with-the-lucas-reagent-to-determine-whether-the-alcohol-is-primary-secondary-or-tertiary-which-alcohol-reacts-fastest-an-3-62668

question:
<div class="question">An unknown alcohol is treated with the "Lucas reagent" to determine whether the alcohol is primary, secondary or tertiary. Which alcohol reacts fastest and by what mechanism:</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">Secondary alcohol by S<sub>N</sub>2</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">Tertiary alcohol by S<sub>N</sub>2</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">Secondary alcohol by S<sub>N</sub>1</span> </li><li class="correct"> <span class="option-label">D</span> <span class="option-data">Tertiary alcohol by S<sub>N</sub>1</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">Tertiary alcohol by S<sub>N</sub>1</span> </div>

answer:
<div class="solution"><p>3° alcohol reacts fastest giving white turbidity immediately on adding Lucas reagent.<br/>Reaction takes place through carbocation formation involving S<sub>N</sub><sup>1</sup> mechanism. Rate of reaction in this reaction is directly proportional to the stability of the carbocation formed.<br/>3° R-OH(tertiary alcohol) forms 3° carbocation and therefore, the reaction is fastest.<br/><img src="https://cdn-question-pool.getmarks.app/pyq/jee_main/389d19f9-0233-4330-a80a-0b91361c4042-image.png" style="width: 648px; height: 170px;"/></p></div>


tags: ['Chemistry', 'Alcohols Phenols and Ethers', 'JEE Main']
source_db: MarksBatch1_P1.db
title:
an-unknown-alcohol-is-treated-with-the-lucas-reagent-to-determine-whether-the-alcohol-is-primary-secondary-or-tertiary-which-alcohol-reacts-fastest-an-4

slug:
an-unknown-alcohol-is-treated-with-the-lucas-reagent-to-determine-whether-the-alcohol-is-primary-secondary-or-tertiary-which-alcohol-reacts-fastest-an-4-22028

question:
<div class="question">An unknown alcohol is treated with the "Lucas reagent" to determine whether the alcohol is primary, secondary or tertiary. Which alcohol reacts fastest and by what mechanism:</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">Secondary alcohol by S<sub>N</sub>2</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">Tertiary alcohol by S<sub>N</sub>2</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">Secondary alcohol by S<sub>N</sub>1</span> </li><li class="correct"> <span class="option-label">D</span> <span class="option-data">Tertiary alcohol by S<sub>N</sub>1</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">Tertiary alcohol by S<sub>N</sub>1</span> </div>

answer:
<div class="solution"><p>3° alcohol reacts fastest giving white turbidity immediately on adding Lucas reagent.<br/>Reaction takes place through carbocation formation involving S<sub>N</sub><sup>1</sup> mechanism. Rate of reaction in this reaction is directly proportional to the stability of the carbocation formed.<br/>3° R-OH(tertiary alcohol) forms 3° carbocation and therefore, the reaction is fastest.<br/><img src="https://cdn-question-pool.getmarks.app/pyq/jee_main/389d19f9-0233-4330-a80a-0b91361c4042-image.png" style="width: 648px; height: 170px;"/></p></div>


tags: ['Chemistry', 'Alcohols Phenols and Ethers', 'NEET']
source_db: MarksBatch1_P1.db
title:
an-unknown-alcohol-is-treated-with-the-lucas-reagent-to-determine-whether-the-alcohol-is-primary-secondary-or-tertiary-which-alcohol-reacts-fastest-an

slug:
an-unknown-alcohol-is-treated-with-the-lucas-reagent-to-determine-whether-the-alcohol-is-primary-secondary-or-tertiary-which-alcohol-reacts-fastest-an-82603

question:
<div class="question">An unknown alcohol is treated with the " Lucas reagent " to determine whether the alcohol is primary, secondary or tertiary. Which alcohol reacts fastest and by what mechanism :</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">Secondary alcohol by S<sub>N</sub>2</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">Tertiary alcohol by S<sub>N</sub>2</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">Secondary alcohol by S<sub>N</sub>1</span> </li><li class="correct"> <span class="option-label">D</span> <span class="option-data">Tertiary alcohol by S<sub>N</sub>1</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">Tertiary alcohol by S<sub>N</sub>1</span> </div>

answer:
<div class="solution">3Â° alcohol reacts fastest giving white turbidity immediately on adding lucas reagent.<br/>Reaction takes place through carbocation formation involving S<sub>N</sub><sup>1</sup> mechanism,Rate of reaction in this reaction is directly proportional to the stability of the carbocation formed.<br/>3Â° R-OH(tertiary alcohol) forms 3Â° carbocation and therefore,the reaction is fastest.<br/><br/><img alt="" src="https://cdn-question-pool.getmarks.app/nta_abhyas/neet/images/zsa.jpg" style="width: 471px; height: 146px;"/></div>


tags: ['Mathematics', 'Probability', 'NDA', 'NDA 2012 (Phase 2)']
source_db: MarksBatch1_P1.db
title:
an-urn-contains-one-black-ball-and-one-green-ball-a-second-urn-contains-one-white-and-one-green-ball-one-ball-is-drawn-at-random-from-each-urn-what-is-1

slug:
an-urn-contains-one-black-ball-and-one-green-ball-a-second-urn-contains-one-white-and-one-green-ball-one-ball-is-drawn-at-random-from-each-urn-what-is-1-56823

question:
<div class="question">An urn contains one black ball and one green ball. A second urn contains one white and one green ball. One ball is drawn at random from each urn.<br/>What is the probability of getting at least one green ball?</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">$1 / 2$</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">$1 / 3$</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">$2 / 3$</span> </li><li class="correct"> <span class="option-label">D</span> <span class="option-data">$3 / 4$</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">$3 / 4$</span> </div>

answer:
<div class="solution">Total number of balls in urn $-\mathrm{I}=1$ Black $+1$ Green $=2$ Balls Total number of balls in urn $-\mathrm{II}=1$ White $+1$ Green $=2$ Balls<br/>$\begin{aligned} \text { Required prob }=(1 \mathrm{G})_{\mathrm{I}} \times(1 \mathrm{G})_{\mathrm{I}}+(1 \mathrm{G})_{\mathrm{I}} \times(1 \mathrm{~B}) \mathrm{I} \\ &amp;+(1 \mathrm{G})_{\mathrm{II}} \times(1 \mathrm{~W})_{\mathrm{II}} \\=\left(\frac{1}{2} \times \frac{1}{2}\right)+\left(\frac{1}{2} \times \frac{1}{2}\right)+\left(\frac{1}{2} \times \frac{1}{2}\right)=\frac{1}{4}+\frac{1}{4}+\frac{1}{4}=\frac{3}{4} \end{aligned}$</div>


tags: ['Mathematics', 'Probability', 'NDA', 'NDA 2012 (Phase 2)']
source_db: MarksBatch1_P1.db
title:
an-urn-contains-one-black-ball-and-one-green-ball-a-second-urn-contains-one-white-and-one-green-ball-one-ball-is-drawn-at-random-from-each-urn-what-is

slug:
an-urn-contains-one-black-ball-and-one-green-ball-a-second-urn-contains-one-white-and-one-green-ball-one-ball-is-drawn-at-random-from-each-urn-what-is-86681

question:
<div class="question">An urn contains one black ball and one green ball. A second urn contains one white and one green ball. One ball is drawn at random from each urn.<br/>What is the probability that both balls are of same colour?</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">$1 / 2$</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">$1 / 3$</span> </li><li class="correct"> <span class="option-label">C</span> <span class="option-data">$1 / 4$</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li><li class=""> <span class="option-label">D</span> <span class="option-data">$2 / 3$</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">$1 / 4$</span> </div>

answer:
<div class="solution">Total number of balls in urn $-\mathrm{I}=1$ Black $+1$ Green $=2$ Balls Total number of balls in urn $-\mathrm{II}=1$ White $+1$ Green $=2$ Balls<br/>Required prob $=(1 \mathrm{G})_{\mathrm{I}} \times(1 \mathrm{G})_{\mathrm{II}}=\frac{1}{2} \times \frac{1}{2}=\frac{1}{4}$</div>


title: anatomically-fairly-old-dicotyledonous-root-is-distinguished-from-the-dicotyledonous-stem-by-1
tags: ['Biology', 'Anatomy of Flowering Plants', 'NEET', 'NEET 2009 (Screening)']
source_db: MarksBatch1_P1.db
slug:
anatomically-fairly-old-dicotyledonous-root-is-distinguished-from-the-dicotyledonous-stem-by-1-19690

question:
<div class="question">Anatomically fairly old dicotyledonous root is distinguished from the dicotyledonous stem by</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">absence of secondary xylem</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">absence of secondary phloem</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">presence of cortex</span> </li><li class="correct"> <span class="option-label">D</span> <span class="option-data">position of protoxylem</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">position of protoxylem</span> </div>

answer:
<div class="solution">In dicotyledonous root, the condition of xylem is exarch as the protoxylem away from the centre and metaxylem towards the centre. In dicotyledonous stem (eg, Cucurbita), the condition of xylen is endarch as the metaxylem away from the centre and protoxylem towards the centre.</div>


title: anatomically-fairly-old-dicotyledonous-root-is-distinguished-from-the-dicotyledonous-stem-by
slug: anatomically-fairly-old-dicotyledonous-root-is-distinguished-from-the-dicotyledonous-stem-by-84161
tags: ['Biology', 'Anatomy of Flowering Plants', 'NEET', 'NEET 2009 (Mains)']
answer: <div class="solution">No Solution Available</div>
source_db: MarksBatch1_P1.db
question:
<div class="question">Anatomically fairly old dicotyledonous root is distinguished from the dicotyledonous stem by :</div>

options:
<ul class="options"> <li class="correct"> <span class="option-label">A</span> <span class="option-data">Position of protoxylem</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li><li class=""> <span class="option-label">B</span> <span class="option-data">absence of secondary xylem</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">Absence of secondary phloem</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">Presence of cortex</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">Position of protoxylem</span> </div>


tags: ['Biology', 'Principles of Inheritance and Variation', 'NEET']
source_db: MarksBatch1_P1.db
title:
andalusian-fowls-have-two-pure-forms-black-and-white-if-black-forms-bb-and-white-forms-bb-are-crossed-f-1-individuals-appear-blue-coloured-bb-due-to-i

slug:
andalusian-fowls-have-two-pure-forms-black-and-white-if-black-forms-bb-and-white-forms-bb-are-crossed-f-1-individuals-appear-blue-coloured-bb-due-to-i-22271

question:
<div class="question">Andalusian fowls have two pure forms - black and white. If black forms (BB) and white forms (bb) are crossed, <math><msub><mrow><mi mathvariant="normal">F</mi></mrow><mrow><mn>1</mn></mrow></msub></math> individuals appear blue coloured (Bb), due to incomplete dominance. Which of the following would be an outcome of a cross between black form and blue form?</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">1 Black: 2 Blue : 1 White</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">2 Black : 1 Blue</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">1 Black : 2 Blue</span> </li><li class="correct"> <span class="option-label">D</span> <span class="option-data">1 Black : 1 Blue</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">1 Black : 1 Blue</span> </div>

answer:
<div class="solution">As Mendel, on crossing homozygous members for contrasting characters, the dominant trait is expressed in the heterozygous or hybrid condition. Incomplete dominance is a deviation of Mendels law of dominance where the heterozygous individual instead of expressing the dominant trait, it expresses a trait which is a mix of the parent traits. On crossing, black form fowl with white form fowl, the offspring is blue form.<br/><br/>When a black form fowl is crossed with blue form fowl we get-<br/><br/><table border="1"><tr><td></td><td> B</td><td> B</td></tr><tr><td> B</td><td> BB</td><td> BB</td></tr><tr><td> b</td><td> Bb</td><td> Bb</td></tr></table><br/><br/>Genotype of  <math><msub><mrow><mi mathvariant="normal">F</mi></mrow><mrow><mn>1</mn></mrow></msub></math>  -  BB and  <math><mi mathvariant="normal">B</mi><mi mathvariant="normal">b</mi><mo>â</mo><mn>1</mn><mo>:</mo><mn>1</mn></math> <br/><br/>Phenotype of  <math><msub><mrow><mi mathvariant="normal">F</mi></mrow><mrow><mn>1</mn></mrow></msub></math>  - Black and Blue  <math><mo>â</mo><mn>1</mn><mo>:</mo><mn>1</mn></math></div>


tags: ['Mathematics', 'Trigonometric Ratios & Identities', 'NDA', 'NDA 2017 (Phase 2)']
source_db: MarksBatch1_P1.db
title:
angle-is-divided-into-two-parts-a-and-b-such-that-a-b-x-and-tan-a-tan-b-p-q-the-value-of-sin-x-is-equal-to

slug:
angle-is-divided-into-two-parts-a-and-b-such-that-a-b-x-and-tan-a-tan-b-p-q-the-value-of-sin-x-is-equal-to-43367

question:
<div class="question">Angle $\alpha$ is divided into two parts $\mathrm{A}$ and $\mathrm{B}$ such that $A-B=x$ and $\tan A=\tan B=p: q$. The value of $\sin x$ is equal<br/>to</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">$\frac{(p+q) \sin \alpha}{p-q}$</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">$\frac{p \sin \alpha}{p+q}$</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">$\frac{p \sin \alpha}{p-q}$</span> </li><li class="correct"> <span class="option-label">D</span> <span class="option-data">$\frac{(p-q) \sin \alpha}{p+q}$</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">$\frac{(p-q) \sin \alpha}{p+q}$</span> </div>

answer:
<div class="solution">$A-B=x$ and $\tan A: \tan B=p: q$<br/>Also, given $\alpha=\mathrm{A}+\mathrm{B}$<br/>$\mathrm{A}-\mathrm{B}=\mathrm{x}$ and $\alpha=\mathrm{A}+\mathrm{B}$<br/>$\Rightarrow \mathrm{A}=\frac{\mathrm{x}+\alpha}{2}$ and $\mathrm{B}=\frac{\alpha-\mathrm{x}}{2}$<br/>Now, $\frac{\tan \mathrm{A}}{\tan \mathrm{B}}=\frac{\tan \left(\frac{\mathrm{x}+\alpha}{2}\right)}{\tan \left(\frac{\alpha-\mathrm{x}}{2}\right)}=\frac{\mathrm{p}}{\mathrm{q}} \quad($ Given $)$<br/>$\Rightarrow \frac{2 \sin \left(\frac{\alpha+x}{2}\right) \cos \left(\frac{\alpha-x}{2}\right)}{2 \cos \left(\frac{\alpha+x}{2}\right) \sin \left(\frac{\alpha-x}{2}\right)}=\frac{p}{q}$<br/>$\Rightarrow \frac{\sin \alpha+\sin x}{\sin \alpha-\sin x}=\frac{p}{q}$<br/>$\Rightarrow \frac{\sin \alpha+\sin x+\sin \alpha-\sin x}{\sin \alpha+\sin x-\sin \alpha+\sin x}=\frac{p+q}{p-q}$<br/>$\Rightarrow \frac{2 \sin \alpha}{2 \sin x}=\frac{p+q}{p-q}$<br/>$\Rightarrow \frac{\sin \alpha}{\sin x}=\frac{p+q}{p-q} \Rightarrow \sin x=\frac{(\sin \alpha)(p-q)}{p+q}$</div>


title: annual-rings-are-formed-by-the-activity-of
slug: annual-rings-are-formed-by-the-activity-of-95922
question: <div class="question">Annual rings are formed by the activity of</div>
tags: ['Biology', 'Anatomy of Flowering Plants', 'NEET']
source_db: MarksBatch1_P1.db
options:
<ul class="options"> <li class="correct"> <span class="option-label">A</span> <span class="option-data">Cambium</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li><li class=""> <span class="option-label">B</span> <span class="option-data">Secondary xylem</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">Phellogen</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">Xylem and phloem</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">Cambium</span> </div>

answer:
<div class="solution">During secondary growth, vascular cambium divides to form secondary xylem which forms wood. The activity of cambium varies in the spring and autumn season. For plants growing in the temperate region, more quantity of light coloured wood is formed in the spring season and less quantity of dark coloured wood is formed in the autumn season. These concentric light and dark coloured wood constitutes an annual ring.</div>


tags: ['Physics', 'Thermal Properties of Matter']
options: None
correct_option: None
source_db: MarksBatch1_P1.db
title:
answer-the-following-a-the-triple-point-of-water-is-a-standard-fixed-point-in-modern-thermometry-why-what-is-wrong-in-taking-the-melting-point-of-ice-

slug:
answer-the-following-a-the-triple-point-of-water-is-a-standard-fixed-point-in-modern-thermometry-why-what-is-wrong-in-taking-the-melting-point-of-ice-69174

question:
<div class="question">Answer the following :<br/>(a) The triple point of water is a standard fixed point in modern thermometry. Why? What is wrong in taking the melting point of ice and the boiling point of water as standard fixed points (as was originally done in the Celsius scale)?<br/>(b) There were two fixed points in the original Celsius scale as mentioned above which were assigned the number $0^{\circ} \mathrm{C}$ and $100^{\circ} \mathrm{C}$ respectively. On the absolute scale, one of the fixed points is the triple point of water, which on the Kelvin absolute scale is assigned the number $273.16 \mathrm{~K}$. What is the other fixed point on this (Kelvin) scale?<br/>(c) The absolute temperature (kelvin scale) $T$ is related to temperature $t_c$ on the Celsius scale by $t_c=T-273.15$. Why do we have $273.15$ in this relation, 0 and not $273.16$ ?<br/>(d) What is the temperature of the triple point of water on an absolute scale whose unit interval size is equal to that of the Fahrenheit scale?</div>

answer:
<div class="solution">(a) Triple point of water has a unique value $(273.16 \mathrm{~K}$ ) at fixed values of pressure and volume. But melting point of ice and boiling point of water do not have unique value as they depend both on pressure and temperature.<br/>(b) The other fixed point is the absolute zero.<br/>(c) On Celsius scale, $0^{\circ} \mathrm{C}$ corresponds to melting point of ice at normal pressure and the same temperature in Kelvin scale is $273.15 \mathrm{~K}$. The triple point of water in Kelvin scale is $273.16 \mathrm{~K}$.<br/>$\therefore \quad$ By the relation, $t_c=T-273.15$,<br/>the triple point of water on Celsius scale $=273.16$ $-273.15=0.01^{\circ} \mathrm{C}$<br/>(d) Relation between temperature in Fahrenheit scale and absolute scale is<br/>$\frac{\mathrm{F}-32}{180}=\frac{\mathrm{K}-273.15}{100}$<br/>For another set of temperature, $\frac{\mathrm{F}^{\prime}-32}{180}=\frac{\mathrm{K}^{\prime}-273.15}{100}$<br/>Subtracting (i) from (ii), we get<br/>$$<br/>\begin{aligned}<br/>&amp; \frac{F^{\prime}-F}{180}=\frac{K^{\prime}-K}{100} \\<br/>\Rightarrow F^{\prime}-F &amp;=\frac{180}{100} \times\left(K^{\prime}-K\right)<br/>\end{aligned}<br/>$$<br/>If $K^{\prime}-K=1 K$, then<br/>$$<br/>\mathrm{F}^{\prime}-\mathrm{F}=\frac{180}{100} \times 1=\frac{9}{5}<br/>$$<br/>$\therefore \quad$ The triple point of water $(273.16 \mathrm{~K})$ in the new scale is $273.16 \times \frac{9}{5}=491.69$.</div>


tags: ['Biology', 'Neural Control and Coordination']
options: None
correct_option: None
source_db: MarksBatch1_P1.db
title:
answer-the-following-a-which-part-of-the-ear-determines-the-pitch-of-a-sound-b-which-part-of-the-human-brain-is-the-most-developed-c-which-part-of-our

slug:
answer-the-following-a-which-part-of-the-ear-determines-the-pitch-of-a-sound-b-which-part-of-the-human-brain-is-the-most-developed-c-which-part-of-our-64868

question:
<div class="question">Answer the following :<br/>(a) Which part of the ear determines the pitch of a sound?<br/>(b) Which part of the human brain is the most developed ?<br/>(c) Which part of our central neural system acts as a master clock?</div>

answer:
<div class="solution">(a) Pitch represents the perceived fundamental frequency of a sound. Pitch is a subjective sensation in which a listener assigns perceived tones to relative positions on a musical scale based primarily on the frequency of vibration. As sound is finally perceived by the temporal lobe of the cerebral cortex so it can be said that cerebral cortex perceives the pitch of the sound.<br/>(b) Cerebral cortex<br/>(c) Hindbrain</div>


title: antibodies-present-in-colostrum-which-protect-the-new-born-from-certain-diseases-is-of
slug: antibodies-present-in-colostrum-which-protect-the-new-born-from-certain-diseases-is-of-25276
tags: ['Biology', 'Human Health and Diseases']
source_db: MarksBatch1_P1.db
question:
<div class="question">Antibodies present in colostrum which protect the new born from certain diseases is of</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data"><br/>IgG type<br/></span> </li><li class="correct"> <span class="option-label">B</span> <span class="option-data"><br/> IgA type<br/></span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li><li class=""> <span class="option-label">C</span> <span class="option-data"><br/>IgD type<br/></span> </li><li class=""> <span class="option-label">D</span> <span class="option-data"><br/>IgE type</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value"><br/> IgA type<br/></span> </div>

answer:
<div class="solution">- During the initial days of lactation the yellowish fluid wlostrum is secreted by mother. It has abundant antibodies (IgA) that protects the infant from several diseases. IgG immunoglobulin (antibody) is most abundant (appro. \( 80 \% \) antibody in human and found in serum IgA is second abundant (approx. 10-15\%) antibody. It is found in saliva and tear also. IgD and IgE constitute 2-3\% of total antibodies which are found in most cells and serum.</div>


title: antibodies-present-in-colostrum-which-protects-the-newborn-from-certain-diseases-are-of
slug: antibodies-present-in-colostrum-which-protects-the-newborn-from-certain-diseases-are-of-48878
tags: ['Biology', 'Human Health and Diseases', 'NEET']
source_db: MarksBatch1_P1.db
question:
<div class="question">Antibodies present in colostrum, which protects the newborn from certain diseases, are of</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">IgG type</span> </li><li class="correct"> <span class="option-label">B</span> <span class="option-data">Ig A type</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li><li class=""> <span class="option-label">C</span> <span class="option-data">Ig D type</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">Ig E type</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">Ig A type</span> </div>

answer:
<div class="solution">The yellowish fluid colostrum secreted by mother during the initial days of lactation has abundant antibodies (IgA) to protect the infant.</div>


title: apis-bombyx-culex-and-limulus-belongs-to
slug: apis-bombyx-culex-and-limulus-belongs-to-99739
question: <div class="question">Apis, Bombyx, Culex and Limulus belongs to</div>
tags: ['Biology', 'Animal Kingdom', 'NEET']
source_db: MarksBatch1_P1.db
options:
<ul class="options"> <li class="correct"> <span class="option-label">A</span> <span class="option-data">the largest phylum of animalia</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li><li class=""> <span class="option-label">B</span> <span class="option-data">the smallest group of animalia</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">the second-largest animal phylum</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">the animals have an endoskeleton of calcareous ossicles</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">the largest phylum of animalia</span> </div>

answer:
<div class="solution">An "arthropod" is an invertebrate animal that has an exoskeleton, a segmented body, and jointed appendages. The following families of organisms are all examples of arthropods: Insects such as ants, dragonflies, and bees; Arachnids such as spiders and scorpions; Myriapods (a term which means "many feet") such as centipedes and millipedes; Crustaceans such as crabs, lobsters, and shrimp.</div>


title: apomixis-is
slug: apomixis-is-58423
question: <div class="question">Apomixis is</div>
tags: ['Biology', 'Sexual Reproduction in Flowering Plants', 'NEET']
source_db: MarksBatch1_P1.db
options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">Formation of seeds by fusion of gametes</span> </li><li class="correct"> <span class="option-label">B</span> <span class="option-data">Formations of seeds without syngamy and meiosis</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li><li class=""> <span class="option-label">C</span> <span class="option-data">Formation of seeds with syngamy but no meiosis</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">None of the given options</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">Formations of seeds without syngamy and meiosis</span> </div>

answer:
<div class="solution">Apomixis (asexual seed formation) is the result of a plant gaining the ability to bypass the most fundamental aspects of sexual reproduction: meiosis and fertilization. Without the need for fertilization involving the male gamete, the resulting seed germinates a plant that develops as a maternal clone.</div>


title: are-fruits-more-dependable-for-reproduction-than-seeds
slug: are-fruits-more-dependable-for-reproduction-than-seeds-90229
question: <div class="question">Are fruits more dependable for reproduction than seeds?</div>
tags: ['Biology', 'Sexual Reproduction in Flowering Plants', 'NEET']
correct_option: <div class="correct-answer"> The correct answer is: <span class="option-value">No</span> </div>
source_db: MarksBatch1_P1.db
options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">Yes</span> </li><li class="correct"> <span class="option-label">B</span> <span class="option-data">No</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li><li class=""> <span class="option-label">C</span> <span class="option-data">It depends on the species</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">It depends on the habitat</span> </li> </ul>

answer:
<div class="solution">Fruits are less dependable for reproduction compared to seeds as seed formation is independent of water, whereas fruits may depend on water availability for fertilization.</div>


tags: ['Physics', 'Nuclear Physics']
options: None
correct_option: None
source_db: MarksBatch1_P1.db
title:
are-the-nucleons-fundamental-particles-or-do-they-consist-of-still-smaller-parts-one-way-to-find-out-is-to-probe-a-nucleon-just-as-rutherford-probed-a

slug:
are-the-nucleons-fundamental-particles-or-do-they-consist-of-still-smaller-parts-one-way-to-find-out-is-to-probe-a-nucleon-just-as-rutherford-probed-a-44423

question:
<div class="question">Are the nucleons fundamental particles, or do they consist of still smaller parts? One way to find out is to probe a nucleon just as Rutherford probed an atom. What should be the kinetic energy of an electron for it to be able to probe a nucleon? Assume the diameter of a nucleon to be approximately $10^{-15} \mathrm{~m}$.</div>

answer:
<div class="solution">To detect the properties of nucleons inside the nucleus the wavelength of particle which may detect nucleons or each particle (neutron and proton) present inside the nucleus is called nucleon.<br/>Given, wavelength $\lambda=10^{-15} \mathrm{~m}$<br/><br/><br/>To detect separate parts inside a nucleon the electron must have wavelength less than $10^{-15} \mathrm{~m}$.<br/>We know that energy of free electron<br/>$$<br/>\mathrm{KE}=\mathrm{PE}<br/>$$<br/>Energy $\mathrm{E}=\mathrm{hv}=\frac{\mathrm{hc}}{\lambda}$<br/>$$<br/>=\frac{\mathrm{hc}}{\lambda}<br/>$$<br/>From Eq. (i) and Eq. (ii),<br/>kinetic energy of electron<br/>$$<br/>\begin{aligned}<br/>\mathrm{PE} &amp;=\frac{\mathrm{hc}}{\lambda}=\frac{6.6 \times 10^{-34} \times 3 \times 10^8}{10^{-15} \times 1.6 \times 10^{-19}} \mathrm{eV} \\<br/>&amp;=1.24 \times 10^9 \mathrm{eV} \\<br/>\mathrm{KE} &amp;=1.24 \times 10^9 \mathrm{eV}<br/>\end{aligned}<br/>$$</div>


tags: ['Chemistry', 'Electrochemistry', 'NEET']
source_db: MarksBatch1_P1.db
title:
arrange-given-metals-in-order-of-their-reducing-powers-the-standard-reduction-electrode-potentials-of-three-metals-a-b-and-c-are-respectively-are-05-v

slug:
arrange-given-metals-in-order-of-their-reducing-powers-the-standard-reduction-electrode-potentials-of-three-metals-a-b-and-c-are-respectively-are-05-v-82896

question:
<div class="question">Arrange given metals in order of their reducing powers. The standard reduction electrode potentials of three metals A, B and C are respectively are <math><mo>+</mo><mn>0.5</mn><mi mathvariant="normal">V</mi></math> , <math><mo>â</mo><mn>3.0</mn><mi mathvariant="normal">V</mi></math> and <math><mo>â</mo><mn>1.2</mn><mi mathvariant="normal">V</mi></math> . The</div>

options:
<ul class="options"> <li class="correct"> <span class="option-label">A</span> <span class="option-data"><math><mi mathvariant="normal">B</mi><mo>&gt;</mo><mi mathvariant="normal">C</mi><mo>&gt;</mo><mi mathvariant="normal">A</mi></math></span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li><li class=""> <span class="option-label">B</span> <span class="option-data"><math><mi mathvariant="normal">A</mi><mo>&gt;</mo><mi mathvariant="normal">B</mi><mo>&gt;</mo><mi mathvariant="normal">C</mi></math></span> </li><li class=""> <span class="option-label">C</span> <span class="option-data"><math><mi mathvariant="normal">C</mi><mo>&gt;</mo><mi mathvariant="normal">B</mi><mo>&gt;</mo><mi mathvariant="normal">A</mi></math></span> </li><li class=""> <span class="option-label">D</span> <span class="option-data"><math><mi mathvariant="normal">A</mi><mo>&gt;</mo><mi mathvariant="normal">C</mi><mo>&gt;</mo><mi mathvariant="normal">B</mi></math></span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value"><math><mi mathvariant="normal">B</mi><mo>&gt;</mo><mi mathvariant="normal">C</mi><mo>&gt;</mo><mi mathvariant="normal">A</mi></math></span> </div>

answer:
<div class="solution">More is reduction potential, more is the power to get itself reduced or lesser is reducing power or greater is oxidising power.</div>


title: arrange-in-the-order-of-stability-of-enol-form-of-the-compounds
slug: arrange-in-the-order-of-stability-of-enol-form-of-the-compounds-58669
tags: ['Chemistry', 'General Organic Chemistry', 'NEET']
source_db: MarksBatch1_P1.db
question:
<div class="question">Arrange in the order of stability of enol form of the compounds:<br/> <br/> <img object-fit:contain="" src="https://cdn-question-pool.getmarks.app/nta_abhyas/neet/images/ddfgndwefsdgxndaewgdsfndaefgdfnxdffd.png" style="max-width:"/></div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data"><math><mtext mathvariant="normal">i</mtext><mtext mathvariant="normal">i</mtext><mtext mathvariant="normal">i</mtext><mtext mathvariant="normal"> </mtext><mo>&gt;</mo><mtext> </mtext><mtext>i</mtext><mtext>i</mtext><mtext> </mtext><mo>&gt;</mo><mtext> </mtext><mtext>i</mtext></math></span> </li><li class="correct"> <span class="option-label">B</span> <span class="option-data"><math><mtext mathvariant="normal">i</mtext><mtext mathvariant="normal"> </mtext><mo>&gt;</mo><mtext> </mtext><mtext>i</mtext><mtext>i</mtext><mtext> </mtext><mo>&gt;</mo><mtext> </mtext><mtext>i</mtext><mtext>i</mtext><mtext>i</mtext></math></span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li><li class=""> <span class="option-label">C</span> <span class="option-data"><math><mtext mathvariant="normal">i</mtext><mtext mathvariant="normal">i</mtext><mtext mathvariant="normal">Â </mtext><mo>&gt;</mo><mtext>Â </mtext><mtext>i</mtext><mtext>Â </mtext><mo>&gt;</mo><mtext>Â </mtext><mtext>i</mtext><mtext>i</mtext><mtext>i</mtext></math></span> </li><li class=""> <span class="option-label">D</span> <span class="option-data"><math><mtext mathvariant="normal">i</mtext><mtext mathvariant="normal">i</mtext><mtext mathvariant="normal">Â </mtext><mo>&gt;</mo><mtext>Â </mtext><mtext>i</mtext><mtext>i</mtext><mtext>i</mtext><mtext>Â </mtext><mo>&gt;</mo><mtext>Â </mtext><mtext>i</mtext></math></span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value"><math><mtext mathvariant="normal">i</mtext><mtext mathvariant="normal"> </mtext><mo>&gt;</mo><mtext> </mtext><mtext>i</mtext><mtext>i</mtext><mtext> </mtext><mo>&gt;</mo><mtext> </mtext><mtext>i</mtext><mtext>i</mtext><mtext>i</mtext></math></span> </div>

answer:
<div class="solution"><img alt="" object-fit:contain="" src="https://cdn-question-pool.getmarks.app/nta_abhyas/neet/images/weure43243thgcewEFSD.png" style="max-width:"/><br/><br/>In 1,2,3 the acidic -H order is 1,&gt;2,&gt;3<br/><br/><math><mn> 1</mn><mo>,</mo><mtext mathvariant="normal"> </mtext><mn>3</mn><mo>-</mo><mtext mathvariant="normal">D</mtext><mtext mathvariant="normal">i</mtext><mtext mathvariant="normal">k</mtext><mtext mathvariant="normal">e</mtext><mtext mathvariant="normal">t</mtext><mtext mathvariant="normal">o</mtext><mtext mathvariant="normal">n</mtext><mtext mathvariant="normal">e</mtext><mtext mathvariant="normal">s</mtext></math> are prone to exist as enols because of conjugation of the enol or enolate with the other carbonyl group, and the stability gained in forming a six-membered ring.</div>


tags: ['Chemistry', 'Aldehydes and Ketones', 'NEET']
source_db: MarksBatch1_P1.db
title:
arrange-reactivity-of-given-compounds-in-decreasing-order-with-benzaldehyde-in-the-presence-of-secondary-amine-1-c-h-2-c-o-o-c-2-h-5-2-2-c-h-2-c-n-2-3

slug:
arrange-reactivity-of-given-compounds-in-decreasing-order-with-benzaldehyde-in-the-presence-of-secondary-amine-1-c-h-2-c-o-o-c-2-h-5-2-2-c-h-2-c-n-2-3-33413

question:
<div class="question">Arrange reactivity of given compounds in decreasing order with benzaldehyde in the presence of secondary amine.<br/> <math><mn>1</mn><mo>.</mo><mi mathvariant="normal"></mi><mi mathvariant="normal">C</mi><msub><mrow><mi mathvariant="normal">H</mi></mrow><mrow><mn>2</mn></mrow></msub><mo>(</mo><mi mathvariant="normal">C</mi><mi mathvariant="normal">O</mi><mi mathvariant="normal">O</mi><msub><mrow><mi mathvariant="normal">C</mi></mrow><mrow><mn>2</mn></mrow></msub><msub><mrow><mi mathvariant="normal">H</mi></mrow><mrow><mn>5</mn></mrow></msub><msub><mrow><mo>)</mo></mrow><mrow><mn>2</mn></mrow></msub></math><br/> <math><mn>2</mn><mo>.</mo></math> <math><mi mathvariant="normal">C</mi><msub><mrow><mi mathvariant="normal">H</mi></mrow><mrow><mn>2</mn></mrow></msub><mo>(</mo><mi mathvariant="normal">C</mi><mi mathvariant="normal">N</mi><msub><mrow><mo>)</mo></mrow><mrow><mn>2</mn></mrow></msub></math><br/> <math><mn>3</mn><mo>.</mo></math> <math><mi mathvariant="normal">C</mi><msub><mrow><mi mathvariant="normal">H</mi></mrow><mrow><mn>2</mn></mrow></msub><mo>(</mo><mi mathvariant="normal">N</mi><msub><mrow><mi mathvariant="normal">O</mi></mrow><mrow><mn>2</mn></mrow></msub><msub><mrow><mo>)</mo></mrow><mrow><mn>2</mn></mrow></msub></math><br/> <math><mn>4</mn><mo>.</mo></math> <img src="https://cdn-question-pool.getmarks.app/nta_abhyas/neet/images/c90825f2-0593-4813-9294-a93265e9d132.png" style="max-width:100%; object-fit:contain"/></div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">3, 4, 1, 2</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">3, 4, 2, 1</span> </li><li class="correct"> <span class="option-label">C</span> <span class="option-data">1, 2, 4, 3</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li><li class=""> <span class="option-label">D</span> <span class="option-data">4, 3, 2, 1</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">1, 2, 4, 3</span> </div>

answer:
<div class="solution">Reaction is nucleophilic addition reaction of benzaldehyde. More is the nucleophilicity of anion of these compounds, more is the reactivity.<br/><img src="https://cdn-question-pool.getmarks.app/nta_abhyas/neet/images/67737b76-9f56-40e6-b98c-618686928e20.png" style="max-width:100%; object-fit:contain"/><br/><img src="https://cdn-question-pool.getmarks.app/nta_abhyas/neet/images/cfadsfasd_flaS.png" style="max-width:100%; object-fit:contain"/><img src="https://cdn-question-pool.getmarks.app/nta_abhyas/neet/images/fadfnsdf.png" style="max-width:100%; object-fit:contain"/></div>


tags: ['Biology', 'Anatomy of Flowering Plants', 'NEET']
source_db: MarksBatch1_P1.db
title:
arrange-the-below-four-layers-in-proper-order-starting-from-the-outermost-to-the-innermost-layer-after-secondary-growth-has-already-occurred-in-a-dico

slug:
arrange-the-below-four-layers-in-proper-order-starting-from-the-outermost-to-the-innermost-layer-after-secondary-growth-has-already-occurred-in-a-dico-72814

question:
<div class="question">Arrange the below four layers in proper order starting from the outermost to the innermost layer after secondary growth has already occurred in a dicot stem:<br/> <br/>
I. Phellem<br/>
II. Wood<br/>
III. Phelloderm<br/>
IV. Vascular cambium</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">I â II â III â IV</span> </li><li class="correct"> <span class="option-label">B</span> <span class="option-data">I â III â II â IV</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li><li class=""> <span class="option-label">C</span> <span class="option-data">IV â III â II â I</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">III â II â I â IV</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">I â III â II â IV</span> </div>

answer:
<div class="solution">The meristematic tissue called cork cambium or phellogen develops, usually in the cortex region. Phellogen is a couple of layers thick. It is made of narrow, thin-walled, and nearly rectangular cells. Phellogen cuts off cells on both sides. The outer cells differentiate into cork or phellem while the inner cells differentiate into secondary cortex or phelloderm. Internal to the secondary cortex lies the xylem (wood), then the vascular cambium and then the phloem is the innermost.</div>


title: arrange-the-elements-in-the-increasing-order-of-their-energy-of-atomization
slug: arrange-the-elements-in-the-increasing-order-of-their-energy-of-atomization-98984
tags: ['Chemistry', 'd and f Block Elements', 'NEET']
source_db: MarksBatch1_P1.db
question:
<div class="question"><img src="https://cdn-question-pool.getmarks.app/modules/dbq/cheas77dtry/7SqXOIGSwuyk48vRpus1nCWHz5jsyxtv0BF4VZcb4s4kK5GLm7.png"/>Arrange the elements in the increasing order of their energy of atomization.</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">V<cr> </cr></span></li><li class=""> <span class="option-label">B</span> <span class="option-data">Fe<mn> </mn></span></li><li class="correct"> <span class="option-label">C</span> <span class="option-data">Mn<cr> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </cr></span></li><li class=""> <span class="option-label">D</span> <span class="option-data">Cr<mn> </mn></span></li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">Mn<cr> </cr></span></div>

answer:
<div class="solution">Correct Option is : 3 <br/> Mn<cr> <!-- /Solution --> <!-- Call to Action --> <section class="call-to-action" data-pagefind-ignore=""> <div class="call-to-action-header"> <svg fill="none" height="24" viewbox="0 0 25 24" width="25" xmlns="http://www.w3.org/2000/svg"> <path d="M19.9999 13.5C20.0018 13.8058 19.9089 14.1047 19.734 14.3555C19.559 14.6063 19.3107 14.7968 19.023 14.9006L14.1874 16.6875L12.4062 21.5269C12.3007 21.8134 12.1098 22.0608 11.8594 22.2355C11.6089 22.4101 11.3109 22.5038 11.0055 22.5038C10.7002 22.5038 10.4022 22.4101 10.1517 22.2355C9.90124 22.0608 9.71039 21.8134 9.60491 21.5269L7.8124 16.6875L2.97303 14.9062C2.68646 14.8008 2.43915 14.6099 2.26445 14.3595C2.08976 14.109 1.99609 13.811 1.99609 13.5056C1.99609 13.2003 2.08976 12.9022 2.26445 12.6518C2.43915 12.4013 2.68646 12.2105 2.97303 12.105L7.8124 10.3125L9.59366 5.47313C9.69914 5.18656 9.88998 4.93924 10.1404 4.76455C10.3909 4.58985 10.6889 4.49619 10.9943 4.49619C11.2996 4.49619 11.5977 4.58985 11.8481 4.76455C12.0986 4.93924 12.2894 5.18656 12.3949 5.47313L14.1874 10.3125L19.0268 12.0938C19.3146 12.1986 19.5628 12.3901 19.7371 12.642C19.9114 12.8939 20.0033 13.1937 19.9999 13.5ZM14.7499 4.5H16.2499V6C16.2499 6.19891 16.3289 6.38968 16.4696 6.53033C16.6102 6.67098 16.801 6.75 16.9999 6.75C17.1988 6.75 17.3896 6.67098 17.5302 6.53033C17.6709 6.38968 17.7499 6.19891 17.7499 6V4.5H19.2499C19.4488 4.5 19.6396 4.42098 19.7802 4.28033C19.9209 4.13968 19.9999 3.94891 19.9999 3.75C19.9999 3.55109 19.9209 3.36032 19.7802 3.21967C19.6396 3.07902 19.4488 3 19.2499 3H17.7499V1.5C17.7499 1.30109 17.6709 1.11032 17.5302 0.96967C17.3896 0.829018 17.1988 0.75 16.9999 0.75C16.801 0.75 16.6102 0.829018 16.4696 0.96967C16.3289 1.11032 16.2499 1.30109 16.2499 1.5V3H14.7499C14.551 3 14.3602 3.07902 14.2196 3.21967C14.0789 3.36032 13.9999 3.55109 13.9999 3.75C13.9999 3.94891 14.0789 4.13968 14.2196 4.28033C14.3602 4.42098 14.551 4.5 14.7499 4.5ZM22.9999 7.5H22.2499V6.75C22.2499 6.55109 22.1709 6.36032 22.0302 6.21967C21.8896 6.07902 21.6988 6 21.4999 6C21.301 6 21.1102 6.07902 20.9696 6.21967C20.8289 6.36032 20.7499 6.55109 20.7499 6.75V7.5H19.9999C19.801 7.5 19.6102 7.57902 19.4696 7.71967C19.3289 7.86032 19.2499 8.05109 19.2499 8.25C19.2499 8.44891 19.3289 8.63968 19.4696 8.78033C19.6102 8.92098 19.801 9 19.9999 9H20.7499V9.75C20.7499 9.94891 20.8289 10.1397 20.9696 10.2803C21.1102 10.421 21.301 10.5 21.4999 10.5C21.6988 10.5 21.8896 10.421 22.0302 10.2803C22.1709 10.1397 22.2499 9.94891 22.2499 9.75V9H22.9999C23.1988 9 23.3896 8.92098 23.5302 8.78033C23.6709 8.63968 23.7499 8.44891 23.7499 8.25C23.7499 8.05109 23.6709 7.86032 23.5302 7.71967C23.3896 7.57902 23.1988 7.5 22.9999 7.5Z" fill="#1589EE"></path> </svg> <h3>Looking for more such questions to practice?</h3> </div> <p>
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tags: ['Chemistry', 'Alcohols Phenols and Ethers', 'NEET']
source_db: MarksBatch1_P1.db
title:
arrange-the-following-alcohols-in-order-of-increasing-reactivity-towards-sodium-metal-i-c-h-3-3-c-o-h-i-i-c-h-3-2-c-h-o-h-i-i-i-c-h-3-c-h-2-o-h

slug:
arrange-the-following-alcohols-in-order-of-increasing-reactivity-towards-sodium-metal-i-c-h-3-3-c-o-h-i-i-c-h-3-2-c-h-o-h-i-i-i-c-h-3-c-h-2-o-h-71432

question:
<div class="question">Arrange the following alcohols in order of increasing reactivity towards sodium metal. <br/><math><mo>(</mo><mi mathvariant="normal">i</mi><mo>)</mo></math> <math><mo>(</mo><mi mathvariant="normal">C</mi><msub><mrow><mi mathvariant="normal">H</mi></mrow><mrow><mn>3</mn></mrow></msub><msub><mrow><mo>)</mo></mrow><mrow><mn>3</mn></mrow></msub><mi mathvariant="normal">C</mi><mo>-</mo><mi mathvariant="normal">O</mi><mi mathvariant="normal">H</mi></math> <br/><math><mo>(</mo><mi mathvariant="normal">i</mi><mi mathvariant="normal">i</mi><mo>)</mo></math> <math><mo>(</mo><mi mathvariant="normal">C</mi><msub><mrow><mi mathvariant="normal">H</mi></mrow><mrow><mn>3</mn></mrow></msub><msub><mrow><mo>)</mo></mrow><mrow><mn>2</mn></mrow></msub><mi mathvariant="normal">C</mi><mi mathvariant="normal">H</mi><mo>-</mo><mi mathvariant="normal">O</mi><mi mathvariant="normal">H</mi></math> <br/><math><mo>(</mo><mi mathvariant="normal">i</mi><mi mathvariant="normal">i</mi><mi mathvariant="normal">i</mi><mo>)</mo></math> <math><mi mathvariant="normal">C</mi><msub><mrow><mi mathvariant="normal">H</mi></mrow><mrow><mn>3</mn></mrow></msub><mi mathvariant="normal">C</mi><msub><mrow><mi mathvariant="normal">H</mi></mrow><mrow><mn>2</mn></mrow></msub><mi mathvariant="normal">O</mi><mi mathvariant="normal">H</mi></math></div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">(iii) &lt; (ii) &lt; (i)</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">(ii) &lt; (i) &lt; (iii)</span> </li><li class="correct"> <span class="option-label">C</span> <span class="option-data">(i) &lt; (ii) &lt; (iii)</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li><li class=""> <span class="option-label">D</span> <span class="option-data">(iii) &lt; (i) &lt; (ii)</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">(i) &lt; (ii) &lt; (iii)</span> </div>

answer:
<div class="solution">More the number of methyl groups (electron releasing) lesser will be the acidity. Hence the reactivity order towards sodium metal will be as follows <br/>tertiary (i) &lt; secondary (ii) &lt; primary (iii).</div>


tags: ['Chemistry', 'Alcohols Phenols and Ethers', 'JEE Main']
source_db: MarksBatch1_P1.db
title:
arrange-the-following-alcohols-in-order-of-increasing-reactivity-towards-sodium-metal-i-c-h-3-o-h-i-i-c-h-3-2-c-h-o-h-i-i-i-c-h-3-c-h-2-o-h-i-v-c-h-3-

slug:
arrange-the-following-alcohols-in-order-of-increasing-reactivity-towards-sodium-metal-i-c-h-3-o-h-i-i-c-h-3-2-c-h-o-h-i-i-i-c-h-3-c-h-2-o-h-i-v-c-h-3-53857

question:
<div class="question">Arrange the following alcohols in order of increasing reactivity towards sodium metal.<br/> <math><mo>(</mo><mi mathvariant="normal">i</mi><mo>)</mo></math> <math><mi mathvariant="normal">C</mi><msub><mrow><mi mathvariant="normal">H</mi></mrow><mrow><mn>3</mn></mrow></msub><mi mathvariant="normal">O</mi><mi mathvariant="normal">H</mi></math><br/> <math><mo>(</mo><mi mathvariant="normal">i</mi><mi mathvariant="normal">i</mi><mo>)</mo></math> <math><mo>(</mo><mi mathvariant="normal">C</mi><msub><mrow><mi mathvariant="normal">H</mi></mrow><mrow><mn>3</mn></mrow></msub><msub><mrow><mo>)</mo></mrow><mrow><mn>2</mn></mrow></msub><mi mathvariant="normal">C</mi><mi mathvariant="normal">H</mi><mo>-</mo><mi mathvariant="normal">O</mi><mi mathvariant="normal">H</mi></math><br/> <math><mo>(</mo><mi mathvariant="normal">i</mi><mi mathvariant="normal">i</mi><mi mathvariant="normal">i</mi><mo>)</mo></math> <math><mi mathvariant="normal">C</mi><msub><mrow><mi mathvariant="normal">H</mi></mrow><mrow><mn>3</mn></mrow></msub><mi mathvariant="normal">C</mi><msub><mrow><mi mathvariant="normal">H</mi></mrow><mrow><mn>2</mn></mrow></msub><mi mathvariant="normal">O</mi><mi mathvariant="normal">H</mi></math><br/> <math><mo>(</mo><mi mathvariant="normal">i</mi><mi mathvariant="normal">v</mi><mo>)</mo></math> <math><mo>(</mo><mi mathvariant="normal">C</mi><msub><mrow><mi mathvariant="normal">H</mi></mrow><mrow><mn>3</mn></mrow></msub><msub><mrow><mo>)</mo></mrow><mrow><mn>3</mn></mrow></msub><mi mathvariant="normal">C</mi><mo>-</mo><mi mathvariant="normal">O</mi><mi mathvariant="normal">H</mi></math></div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">(iv) &lt; (iii) &lt; (ii) &lt; (i)</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">(ii) &lt; (i) &lt; (iii) &lt; (iv)</span> </li><li class="correct"> <span class="option-label">C</span> <span class="option-data">(iv) &lt; (ii) &lt; (iii) &lt; (i)</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li><li class=""> <span class="option-label">D</span> <span class="option-data">(i) &lt; (iii) &lt; (ii) &lt; (iv)</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">(iv) &lt; (ii) &lt; (iii) &lt; (i)</span> </div>

answer:
<div class="solution">More the number of methyl groups (electron releasing) lesser will be the acidity. Hence the reactivity order towards sodium metal will be as follows<br/>tertiary (i) &lt; secondary (ii) &lt; primary (iii).<br/><math><mo>(</mo><mi mathvariant="normal">C</mi><msub><mrow><mi mathvariant="normal">H</mi></mrow><mrow><mn>3</mn></mrow></msub><msub><mrow><mo>)</mo></mrow><mrow><mn>3</mn></mrow></msub><mi mathvariant="normal">C</mi><mo>-</mo><mi mathvariant="normal">O</mi><mi mathvariant="normal">H</mi><mo>&lt;</mo><mo>(</mo><mi mathvariant="normal">C</mi><msub><mrow><mi mathvariant="normal">H</mi></mrow><mrow><mn>3</mn></mrow></msub><msub><mrow><mo>)</mo></mrow><mrow><mn>2</mn></mrow></msub><mi mathvariant="normal">C</mi><mi mathvariant="normal">H</mi><mo>-</mo><mi mathvariant="normal">O</mi><mi mathvariant="normal">H</mi><mo>&lt;</mo><mi mathvariant="normal">C</mi><msub><mrow><mi mathvariant="normal">H</mi></mrow><mrow><mn>3</mn></mrow></msub><mi mathvariant="normal">C</mi><msub><mrow><mi mathvariant="normal">H</mi></mrow><mrow><mn>2</mn></mrow></msub><mi mathvariant="normal">O</mi><mi mathvariant="normal">H</mi><mo>&lt;</mo><mi mathvariant="normal">C</mi><msub><mrow><mi mathvariant="normal">H</mi></mrow><mrow><mn>3</mn></mrow></msub><mi mathvariant="normal">O</mi><mi mathvariant="normal">H</mi></math></div>


title: arrange-the-following-elements-in-the-increasing-order-of-metallic-character-si-be-mg-na-p
slug: arrange-the-following-elements-in-the-increasing-order-of-metallic-character-si-be-mg-na-p-50472
tags: ['Chemistry', 'Classification of Elements and Periodicity in Properties', 'NEET']
source_db: MarksBatch1_P1.db
question:
<div class="question">Arrange the following elements in the increasing order of metallic character: Si, Be, Mg, Na, P.</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">Be<si> </si></span></li><li class="correct"> <span class="option-label">B</span> <span class="option-data">P<si> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </si></span></li><li class=""> <span class="option-label">C</span> <span class="option-data">Na<mg> </mg></span></li><li class=""> <span class="option-label">D</span> <span class="option-data">Si<be> </be></span></li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">P<si> </si></span></div>

answer:
<div class="solution">Correct Option is : (B)<br/>P<si> <!-- /Solution --> <!-- Call to Action --> <section class="call-to-action" data-pagefind-ignore=""> <div class="call-to-action-header"> <svg fill="none" height="24" viewbox="0 0 25 24" width="25" xmlns="http://www.w3.org/2000/svg"> <path d="M19.9999 13.5C20.0018 13.8058 19.9089 14.1047 19.734 14.3555C19.559 14.6063 19.3107 14.7968 19.023 14.9006L14.1874 16.6875L12.4062 21.5269C12.3007 21.8134 12.1098 22.0608 11.8594 22.2355C11.6089 22.4101 11.3109 22.5038 11.0055 22.5038C10.7002 22.5038 10.4022 22.4101 10.1517 22.2355C9.90124 22.0608 9.71039 21.8134 9.60491 21.5269L7.8124 16.6875L2.97303 14.9062C2.68646 14.8008 2.43915 14.6099 2.26445 14.3595C2.08976 14.109 1.99609 13.811 1.99609 13.5056C1.99609 13.2003 2.08976 12.9022 2.26445 12.6518C2.43915 12.4013 2.68646 12.2105 2.97303 12.105L7.8124 10.3125L9.59366 5.47313C9.69914 5.18656 9.88998 4.93924 10.1404 4.76455C10.3909 4.58985 10.6889 4.49619 10.9943 4.49619C11.2996 4.49619 11.5977 4.58985 11.8481 4.76455C12.0986 4.93924 12.2894 5.18656 12.3949 5.47313L14.1874 10.3125L19.0268 12.0938C19.3146 12.1986 19.5628 12.3901 19.7371 12.642C19.9114 12.8939 20.0033 13.1937 19.9999 13.5ZM14.7499 4.5H16.2499V6C16.2499 6.19891 16.3289 6.38968 16.4696 6.53033C16.6102 6.67098 16.801 6.75 16.9999 6.75C17.1988 6.75 17.3896 6.67098 17.5302 6.53033C17.6709 6.38968 17.7499 6.19891 17.7499 6V4.5H19.2499C19.4488 4.5 19.6396 4.42098 19.7802 4.28033C19.9209 4.13968 19.9999 3.94891 19.9999 3.75C19.9999 3.55109 19.9209 3.36032 19.7802 3.21967C19.6396 3.07902 19.4488 3 19.2499 3H17.7499V1.5C17.7499 1.30109 17.6709 1.11032 17.5302 0.96967C17.3896 0.829018 17.1988 0.75 16.9999 0.75C16.801 0.75 16.6102 0.829018 16.4696 0.96967C16.3289 1.11032 16.2499 1.30109 16.2499 1.5V3H14.7499C14.551 3 14.3602 3.07902 14.2196 3.21967C14.0789 3.36032 13.9999 3.55109 13.9999 3.75C13.9999 3.94891 14.0789 4.13968 14.2196 4.28033C14.3602 4.42098 14.551 4.5 14.7499 4.5ZM22.9999 7.5H22.2499V6.75C22.2499 6.55109 22.1709 6.36032 22.0302 6.21967C21.8896 6.07902 21.6988 6 21.4999 6C21.301 6 21.1102 6.07902 20.9696 6.21967C20.8289 6.36032 20.7499 6.55109 20.7499 6.75V7.5H19.9999C19.801 7.5 19.6102 7.57902 19.4696 7.71967C19.3289 7.86032 19.2499 8.05109 19.2499 8.25C19.2499 8.44891 19.3289 8.63968 19.4696 8.78033C19.6102 8.92098 19.801 9 19.9999 9H20.7499V9.75C20.7499 9.94891 20.8289 10.1397 20.9696 10.2803C21.1102 10.421 21.301 10.5 21.4999 10.5C21.6988 10.5 21.8896 10.421 22.0302 10.2803C22.1709 10.1397 22.2499 9.94891 22.2499 9.75V9H22.9999C23.1988 9 23.3896 8.92098 23.5302 8.78033C23.6709 8.63968 23.7499 8.44891 23.7499 8.25C23.7499 8.05109 23.6709 7.86032 23.5302 7.71967C23.3896 7.57902 23.1988 7.5 22.9999 7.5Z" fill="#1589EE"></path> </svg> <h3>Looking for more such questions to practice?</h3> </div> <p>
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tags: ['Biology', 'Human Reproduction', 'NEET']
source_db: MarksBatch1_P1.db
title:
arrange-the-following-events-occurring-in-the-ovary-in-the-correct-sequence-a-the-antrum-is-formed-b-formation-of-a-first-tiny-polar-body-c-the-primar

slug:
arrange-the-following-events-occurring-in-the-ovary-in-the-correct-sequence-a-the-antrum-is-formed-b-formation-of-a-first-tiny-polar-body-c-the-primar-11319

question:
<div class="question">Arrange the following events occurring in the ovary in the CORRECT sequence<br/> <br/> <math><mi mathvariant="normal">a</mi><mo>.</mo></math> The antrum is formed.<br/> <br/> <math><mi mathvariant="normal">b</mi><mo>.</mo></math> Formation of a first tiny polar body.<br/> <br/> <math><mi mathvariant="normal">c</mi><mo>.</mo></math> The primary follicle get surrounded by more and more layers of granulosa cells.<br/> <br/> <math><mi mathvariant="normal">d</mi><mo>.</mo></math> The primary oocyte is arrested in prophase-I of the meiotic division.</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data"><math><mi mathvariant="normal">d</mi><mo>,</mo><mi mathvariant="normal">Â </mi><mi mathvariant="normal">a</mi><mo>,</mo><mi mathvariant="normal">Â </mi><mi mathvariant="normal">b</mi></math>  and  <math><mi mathvariant="normal">c</mi></math></span> </li><li class=""> <span class="option-label">B</span> <span class="option-data"><math><mi mathvariant="normal">a</mi><mo>,</mo><mi mathvariant="normal">Â </mi><mi mathvariant="normal">c</mi><mo>,</mo><mi mathvariant="normal">Â </mi><mi mathvariant="normal">d</mi></math>  and  <math><mi mathvariant="normal">b</mi></math></span> </li><li class=""> <span class="option-label">C</span> <span class="option-data"><math><mi mathvariant="normal">d</mi><mo>,</mo><mi mathvariant="normal">Â </mi><mi mathvariant="normal">a</mi><mo>,</mo><mi mathvariant="normal">Â </mi><mi mathvariant="normal">c</mi></math>  and  <math><mi mathvariant="normal">b</mi></math></span> </li><li class="correct"> <span class="option-label">D</span> <span class="option-data"><math><mi mathvariant="normal">d</mi><mo>,</mo><mi mathvariant="normal"> </mi><mi mathvariant="normal">c</mi><mo>,</mo><mi mathvariant="normal"> </mi><mi mathvariant="normal">a</mi></math> and <math><mi mathvariant="normal">b</mi></math></span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value"><math><mi mathvariant="normal">d</mi><mo>,</mo><mi mathvariant="normal"> </mi><mi mathvariant="normal">c</mi><mo>,</mo><mi mathvariant="normal"> </mi><mi mathvariant="normal">a</mi></math> and <math><mi mathvariant="normal">b</mi></math></span> </div>

answer:
<div class="solution">Oogenesis involves the development of oocyte and also folliculogenesis, which takes place in the Ovary. The primary oocyte develops first and begins its meiosis-I, which gets arrested at prophase-I. This stage is followed by the development of granulosa cells around it, known as primary follicle formation. The primary follicle then develops into the secondary follicle, which is characterized by the formation of the theca layer around granulosa cells. This then develops into the tertiary follicle. The differentiating feature is the formation of Antrum, which is initially crescent-shaped and later becomes large. This tertiary follicle still shows the presence of primary oocyte in it. These two then undergo further development. Primary oocyte completes its meiosis-I and forms two unequal cells: Large secondary oocyte and a small first polar body. Tertiary follicle further develops into Graffian follicle and secondary oocyte starts it meiosis-II.<br/></div>


tags: ['Biology', 'Body Fluids and Circulation', 'NEET', 'NEET 2022 (Phase 2)']
source_db: MarksBatch1_P1.db
title:
arrange-the-following-formed-elements-in-the-decreasing-order-of-their-abundance-in-blood-in-humans-a-platelets-b-neutrophils-c-erythrocytes-d-eosinop

slug:
arrange-the-following-formed-elements-in-the-decreasing-order-of-their-abundance-in-blood-in-humans-a-platelets-b-neutrophils-c-erythrocytes-d-eosinop-38353

question:
<div class="question">Arrange the following formed elements in the decreasing order of their abundance in blood in humans :<br/>(a) Platelets<br/>(b) Neutrophils<br/>(c) Erythrocytes<br/>(d) Eosinophils<br/>(e) Monocytes<br/>Choose the most appropriate answer from the options given below :</div>

options:
<ul class="options"> <li class="correct"> <span class="option-label">A</span> <span class="option-data">(c), (a), (b), (e), (d)</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li><li class=""> <span class="option-label">B</span> <span class="option-data">(c), (b), (a), (e), (d)</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">(d), (e), (b), (a), (c)</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">(a), (c), (b), (d), (e)</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">(c), (a), (b), (e), (d)</span> </div>

answer:
<div class="solution">Number or abundance of blood cells can be arranged in decreasing order as follows:<br/>RBCs $&gt;$ Platelets $&gt;$ Neutrophills $&gt;$ Monocytes $&gt;$ Eosinophills $&gt;$ Platelets</div>


title: arrange-the-following-in-decreasing-order-of-their-boiling-points
slug: arrange-the-following-in-decreasing-order-of-their-boiling-points-78208
tags: ['Chemistry', 'Amines', 'AP EAMCET', 'AP EAMCET 2022 (05 Jul Shift 1)']
source_db: MarksBatch1_P1.db
question:
<div class="question">Arrange the following in decreasing order of their boiling points.<br/><img src="https://cdn-question-pool.getmarks.app/pyq/ap_eamcet/5xkL91U-8WZLc5vdUuHU1FnuT4Zj8zjS4YPY4CKpcoY.original.fullsize.png"/><br/></div>

options:
<ul class="options"> <li class="correct"> <span class="option-label">A</span> <span class="option-data">$A&gt;B&gt;D&gt;C$</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li><li class=""> <span class="option-label">B</span> <span class="option-data">$A&gt;C&gt;D&gt;B$</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">$B&gt;C&gt;D&gt;A$</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">$C&gt;A&gt;B&gt;D$</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">$A&gt;B&gt;D&gt;C$</span> </div>

answer:
<div class="solution"><img src="https://cdn-question-pool.getmarks.app/pyq/ap_eamcet/8jlTnncfcVdF4Vj2DUhSVcaeupc-kpxRyH63oXDq1r8.original.fullsize.png"/><br/><br/>The boiling point of $(\mathrm{A})$ alcohol is highest due to $\mathrm{H}$-bonding.<br/>Out of primary (B), secondary (D) and tertiary amines (C), the boiling point in decreasing order is <br/>Primary amine $&gt;$ Secondary amine $&gt;$ Tertiary amine<br/>as intermolecular association decreases in same order, being highest in primary amine and least in tertiary amine due to steric hindrance.<br/>$\therefore$ The correct decreasing order of boiling point in given compound is<br/>A $&gt;$ B $&gt;$ D $&gt;$ C.</div>


title: arrange-the-following-in-decreasing-order-of-their-pk-b-values
slug: arrange-the-following-in-decreasing-order-of-their-pk-b-values-40420
tags: ['Chemistry', 'General Organic Chemistry', 'AP EAMCET', 'AP EAMCET 2022 (04 Jul Shift 1)']
source_db: MarksBatch1_P1.db
question:
<div class="question"><p>Arrange the following in decreasing order of their <math xmlns="http://www.w3.org/1998/Math/MathML"><msub><mi>pK</mi><mi mathvariant="normal">b</mi></msub></math> values</p><p><img src="https://cdn-question-pool.getmarks.app/pyq/ap_eamcet/b376e356-f232-4b1a-8fef-408bfb6b2917-image.png" style="width: 500px; height: 113px;"/></p></div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data"><math xmlns="http://www.w3.org/1998/Math/MathML"><mi mathvariant="normal">d</mi><mo>&gt;</mo><mi mathvariant="normal">a</mi><mo>&gt;</mo><mi mathvariant="normal">c</mi><mo>&gt;</mo><mi mathvariant="normal">b</mi></math></span> </li><li class=""> <span class="option-label">B</span> <span class="option-data"><math xmlns="http://www.w3.org/1998/Math/MathML"><mi mathvariant="normal">a</mi><mo>&gt;</mo><mi mathvariant="normal">b</mi><mo>&gt;</mo><mi mathvariant="normal">d</mi><mo>&gt;</mo><mi mathvariant="normal">c</mi></math></span> </li><li class="correct"> <span class="option-label">C</span> <span class="option-data"><math xmlns="http://www.w3.org/1998/Math/MathML"><mi mathvariant="normal">d</mi><mo>&gt;</mo><mi mathvariant="normal">c</mi><mo>&gt;</mo><mi mathvariant="normal">b</mi><mo>&gt;</mo><mi mathvariant="normal">a</mi></math></span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li><li class=""> <span class="option-label">D</span> <span class="option-data"><math xmlns="http://www.w3.org/1998/Math/MathML"><mi mathvariant="normal">a</mi><mo>&gt;</mo><mi mathvariant="normal">c</mi><mo>&gt;</mo><mi mathvariant="normal">d</mi><mo>&gt;</mo><mi mathvariant="normal">b</mi></math></span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value"><math xmlns="http://www.w3.org/1998/Math/MathML"><mi mathvariant="normal">d</mi><mo>&gt;</mo><mi mathvariant="normal">c</mi><mo>&gt;</mo><mi mathvariant="normal">b</mi><mo>&gt;</mo><mi mathvariant="normal">a</mi></math></span> </div>

answer:
<div class="solution"><blockquote><p>The reaction of amines with mineral acids to form ammonium salts shows that these are basic in nature. Amines have an unshared pair of electrons on nitrogen atom due to which they behave as Lewis base</p><p>Basic character of amines can be better understood in terms of their K<sub>b </sub>and pK<sub>b</sub>, Larger the value of K<sub>b</sub> or smaller the value of pK<sub>b</sub> , stronger is the base.</p><p>The order of basic strength in case of methyl substituted amines and  in aqueous solution depends on inductive effect ,steric effect and solvation effect.</p><p>Hence, the correct basicity order is</p><p>secondary amines &gt;primary amines&gt; tertiary amines</p><p>Hence, <math xmlns="http://www.w3.org/1998/Math/MathML"><msub><mfenced><msub><mi>CH</mi><mn>3</mn></msub></mfenced><mn>3</mn></msub><mi mathvariant="normal">N</mi></math> is less basic than <math xmlns="http://www.w3.org/1998/Math/MathML"><msub><mi>CH</mi><mn>3</mn></msub><msub><mi>NH</mi><mn>2</mn></msub></math>.</p><p>Therefore, pK<sub>b</sub> value is more for <math xmlns="http://www.w3.org/1998/Math/MathML"><msub><mfenced><msub><mi>CH</mi><mn>3</mn></msub></mfenced><mn>3</mn></msub><mi mathvariant="normal">N</mi></math>.</p><p>C and D are less basic than A and B due to the presence of phenyl group in C and D which causes -I effect.</p><p>But C is more basic than D due to lesser steric hindrance.Hence, the pK<sub>b </sub>value is more D</p><p>So, the correct order of pK<sub>b </sub>values is<img height="0" src="https://cdn-question-pool.getmarks.app/pyq/ap_eamcet/d264a7b5-7a8b-48ab-8ace-d6da279c33b8-image.png" width="0"/></p><p><img height="0" src="https://cdn-question-pool.getmarks.app/pyq/ap_eamcet/92da214e-9ff6-476b-8c24-6b63cf4da6c5-image.png" width="0"/><img src="https://cdn-question-pool.getmarks.app/pyq/ap_eamcet/350b583b-0637-4816-8537-44e574507f28-18-09-2022.png" style="width: 500px; height: 100px;"/><img height="0" src="https://cdn-question-pool.getmarks.app/pyq/ap_eamcet/0bec4f96-0985-49d3-8804-e6d83af5ee72-image.png" width="0"/></p></blockquote></div>


tags: ['Chemistry', 'Amines', 'JEE Main']
source_db: MarksBatch1_P1.db
title:
arrange-the-following-in-the-increasing-order-of-their-basic-strengths-ch-3-nh-2-ch-3-2-nh-ch-3-3-n-nh-3-1

slug:
arrange-the-following-in-the-increasing-order-of-their-basic-strengths-ch-3-nh-2-ch-3-2-nh-ch-3-3-n-nh-3-1-65366

question:
<div class="question">Arrange the following in the increasing order of their basic strengths $\mathrm{CH}_{3} \mathrm{NH}_{2},\left(\mathrm{CH}_{3}\right)_{2} \mathrm{NH}$, $\left(\mathrm{CH}_{3}\right)_{3} \mathrm{~N}, \mathrm{NH}_{3}$</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">$\mathrm{NH}_{3} &lt; \left(\mathrm{CH}_{3}\right)_{3} \mathrm{~N} &lt; \left(\mathrm{CH}_{3}\right)_{2} \mathrm{NH} &lt; \mathrm{CH}_{3} \mathrm{NH}_{2}$</span> </li><li class="correct"> <span class="option-label">B</span> <span class="option-data">$\mathrm{NH}_{3} &lt; \left(\mathrm{CH}_{3}\right)_{3} \mathrm{~N} &lt; \mathrm{CH}_{3} \mathrm{NH}_{2} &lt; \left(\mathrm{CH}_{3}\right)_{2} \mathrm{NH}$</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li><li class=""> <span class="option-label">C</span> <span class="option-data">$\left(\mathrm{CH}_{3}\right)_{3} \mathrm{~N} &lt; \mathrm{NH}_{3} &lt; \mathrm{CH}_{3} \mathrm{NH}_{2} &lt; \left(\mathrm{CH}_{3}\right)_{2} \mathrm{NH}$</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">$\mathrm{CH}_{3} \mathrm{NH}_{2} &lt; \left(\mathrm{CH}_{3}\right)_{2} \mathrm{NH} &lt; \left(\mathrm{CH}_{3}\right)_{3} \mathrm{~N} &lt; \mathrm{NH}_{3}$</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">$\mathrm{NH}_{3} &lt; \left(\mathrm{CH}_{3}\right)_{3} \mathrm{~N} &lt; \mathrm{CH}_{3} \mathrm{NH}_{2} &lt; \left(\mathrm{CH}_{3}\right)_{2} \mathrm{NH}$</span> </div>

answer:
<div class="solution">Aliphatic amines are more basic than $\mathrm{NH}_{3}$ due to $+I$ effect of alkyl groups. In aqueous medium tertiary amine is less basic than secondary amine because the cation formed by protonation of tertiary amine is less solvated as compared to the cation formed by protonation of secondary amine. Hence, the increasing order of their basic strength is as:<br/>$$<br/>\mathrm{NH}_{3} &lt; \left(\mathrm{CH}_{3}\right)_{3} \mathrm{~N} &lt; \mathrm{CH}_{3} \mathrm{NH}_{2} &lt; \left(\mathrm{CH}_{3}\right)_{2} \mathrm{NH}<br/>$$</div>


tags: ['Chemistry', 'Amines', 'KCET', 'KCET 2009']
source_db: MarksBatch1_P1.db
title:
arrange-the-following-in-the-increasing-order-of-their-basic-strengths-ch-3-nh-2-ch-3-2-nh-ch-3-3-n-nh-3

slug:
arrange-the-following-in-the-increasing-order-of-their-basic-strengths-ch-3-nh-2-ch-3-2-nh-ch-3-3-n-nh-3-84154

question:
<div class="question">Arrange the following in the increasing order of their basic strengths $\mathrm{CH}_{3} \mathrm{NH}_{2},\left(\mathrm{CH}_{3}\right)_{2} \mathrm{NH}$, $\left(\mathrm{CH}_{3}\right)_{3} \mathrm{~N}, \mathrm{NH}_{3}$</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">$\mathrm{NH}_{3} &lt; \left(\mathrm{CH}_{3}\right)_{3} \mathrm{~N} &lt; \left(\mathrm{CH}_{3}\right)_{2} \mathrm{NH} &lt; \mathrm{CH}_{3} \mathrm{NH}_{2}$</span> </li><li class="correct"> <span class="option-label">B</span> <span class="option-data">$\mathrm{NH}_{3} &lt; \left(\mathrm{CH}_{3}\right)_{3} \mathrm{~N} &lt; \mathrm{CH}_{3} \mathrm{NH}_{2} &lt; \left(\mathrm{CH}_{3}\right)_{2} \mathrm{NH}$</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li><li class=""> <span class="option-label">C</span> <span class="option-data">$\left(\mathrm{CH}_{3}\right)_{3} \mathrm{~N} &lt; \mathrm{NH}_{3} &lt; \mathrm{CH}_{3} \mathrm{NH}_{2} &lt; \left(\mathrm{CH}_{3}\right)_{2} \mathrm{NH}$</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">$\mathrm{CH}_{3} \mathrm{NH}_{2} &lt; \left(\mathrm{CH}_{3}\right)_{2} \mathrm{NH} &lt; \left(\mathrm{CH}_{3}\right)_{3} \mathrm{~N} &lt; \mathrm{NH}_{3}$</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">$\mathrm{NH}_{3} &lt; \left(\mathrm{CH}_{3}\right)_{3} \mathrm{~N} &lt; \mathrm{CH}_{3} \mathrm{NH}_{2} &lt; \left(\mathrm{CH}_{3}\right)_{2} \mathrm{NH}$</span> </div>

answer:
<div class="solution">Aliphatic amines are more basic than $\mathrm{NH}_{3}$ due to $+I$ effect of alkyl groups. In aqueous medium tertiary amine is less basic than secondary amine because the cation formed by protonation of tertiary amine is less solvated as compared to the cation formed by protonation of secondary amine. Hence, the increasing order of their basic strength is as:<br/>$$<br/>\mathrm{NH}_{3} &lt; \left(\mathrm{CH}_{3}\right)_{3} \mathrm{~N} &lt; \mathrm{CH}_{3} \mathrm{NH}_{2} &lt; \left(\mathrm{CH}_{3}\right)_{2} \mathrm{NH}<br/>$$</div>


title: arrange-the-following-in-the-order-of-decreasing-basicity-rn-chr-1-i-rc-n-ii-rnh-2-iii
slug: arrange-the-following-in-the-order-of-decreasing-basicity-rn-chr-1-i-rc-n-ii-rnh-2-iii-32868
tags: ['Chemistry', 'Amines', 'TS EAMCET', 'TS EAMCET 2023 (14 May Shift 2)']
source_db: MarksBatch1_P1.db
question:
<div class="question">Arrange the following in the order of decreasing basicity<br/>$\begin{array}{ccc}\mathrm{RN}=\mathrm{CHR}^1 &amp; \mathrm{RC} \equiv \mathrm{N} &amp; \mathrm{RNH}_2 \\ \text { I } &amp; \text { II } &amp; \text { III }\end{array}$</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">I $&gt;$ III $&gt;$ II</span> </li><li class="correct"> <span class="option-label">B</span> <span class="option-data">III $&gt;$ I $&gt;$ II</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li><li class=""> <span class="option-label">C</span> <span class="option-data">II $&gt;$ III $&gt;$ I</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">II $&gt;$ I $&gt;$ III</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">III $&gt;$ I $&gt;$ II</span> </div>

answer:
<div class="solution">In $\mathrm{RNH}_2, \mathrm{~N}$ atom is $\mathrm{sp}^3$ hybridised. In $\mathrm{RN}=\mathrm{CHR}$, $\mathrm{N}$ atom is $\mathrm{sp}^2$ hybridised whereas in $\mathrm{RC} \equiv \mathrm{N}, \mathrm{N}$ atom is sp hybridised. The sp hybridised $\mathrm{N}$ atom is most electronegative due to maximum s character. More electronegative element has less tendency to donate electrons and therefore is least basic.<br/>The order of basicity of aliphatic amines should be primary $&gt;$ secondary $&gt;$ tertiary.<br/>Thus, the order of basicity will be:<br/><img src="https://cdn-question-pool.getmarks.app/pyq/ts_eamcet/_j7iuh1CSluhcVhUIwmDQIL8jbkBM07UAujsMglh_hE.original.fullsize.png"/><br/></div>


tags: ['Biology', 'Anatomy of Flowering Plants']
options: None
correct_option: None
source_db: MarksBatch1_P1.db
title:
arrange-the-following-in-the-sequence-you-would-find-them-in-a-plant-starting-from-the-peripheryphellem-phellogen-phelloderm

slug:
arrange-the-following-in-the-sequence-you-would-find-them-in-a-plant-starting-from-the-peripheryphellem-phellogen-phelloderm-89321

question:
<div class="question">Arrange the following in the sequence you would find them in a plant starting from the periphery-phellem, phellogen, phelloderm.</div>

answer:
<div class="solution">The outer most layer is phellem or cork followed by phellogen (cork cambium) which in turn is followed by phelloderm (secondary cortex.</div>


tags: ['Biology', 'Anatomy of Flowering Plants', 'NEET']
source_db: MarksBatch1_P1.db
title:
arrange-the-following-structures-based-on-their-location-from-the-periphery-to-centre-with-respect-to-the-anatomy-of-a-dicotyledonous-root-i-pericycle

slug:
arrange-the-following-structures-based-on-their-location-from-the-periphery-to-centre-with-respect-to-the-anatomy-of-a-dicotyledonous-root-i-pericycle-97976

question:
<div class="question">Arrange the following structures based on their location from the periphery to centre with respect to the anatomy of a dicotyledonous root.<br/>
I. Pericycle<br/>
II. Casparian strips<br/>
III. Epiblema<br/>
IV. Conjunctive tissue</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data"><span id="docs-internal-guid-2bbc0c47-7fff-9ea9-84a4-8788da9dce67"><span style="font-size: 12pt; font-family: Arial; font-variant-numeric: normal; font-variant-east-asian: normal; vertical-align: baseline; white-space: pre-wrap;">IV, I, II, III</span></span></span> </li><li class=""> <span class="option-label">B</span> <span class="option-data"><span id="docs-internal-guid-95ad453f-7fff-e99a-228e-405bceb12edc"><span style="font-size: 12pt; font-family: Arial; font-variant-numeric: normal; font-variant-east-asian: normal; vertical-align: baseline; white-space: pre-wrap;">IV, II, III,I</span></span></span> </li><li class=""> <span class="option-label">C</span> <span class="option-data"><span id="docs-internal-guid-d8090653-7fff-123e-e9ef-542dbbf79135"><span style="font-size: 12pt; font-family: Arial; font-variant-numeric: normal; font-variant-east-asian: normal; vertical-align: baseline; white-space: pre-wrap;">I, II, III, IV</span></span></span> </li><li class="correct"> <span class="option-label">D</span> <span class="option-data"><span id="docs-internal-guid-11e24b9e-7fff-4009-e562-257fcaf1a19e"><span style="font-size: 12pt; font-family: Arial; font-variant-numeric: normal; font-variant-east-asian: normal; vertical-align: baseline; white-space: pre-wrap;">III, II, I, IV</span></span></span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value"><span id="docs-internal-guid-11e24b9e-7fff-4009-e562-257fcaf1a19e"><span style="font-size: 12pt; font-family: Arial; font-variant-numeric: normal; font-variant-east-asian: normal; vertical-align: baseline; white-space: pre-wrap;">III, II, I, IV</span></span></span> </div>

answer:
<div class="solution"><p dir="ltr">The outermost layer is epiblema. Many of the cells of epiblema protrude in the form of unicellular root hairs. The cortex consists of several layers of thin-walled parenchyma cells, with intercellular spaces. The innermost layer of the cortex is called endodermis. It comprises a single layer of barrel-shaped cells without any intercellular spaces. The tangential, as well as radial walls of the endodermal cells, have a deposition of water-impermeable, waxy material suberin in the form of casparian strips. Next to endodermis lies a few layers of thick-walled parenchymatous cells referred to as pericycle. Initiation of lateral roots and vascular cambium during the secondary growth takes place in these cells. The pith is small or inconspicuous. The parenchymatous cells which lie between the xylem and the phloem are called conjunctive tissue.</p></div>


tags: ['Biology', 'Human Reproduction', 'NEET']
source_db: MarksBatch1_P1.db
title:
arrange-the-formation-of-the-following-cells-in-the-ovary-in-the-sequential-order-i-ovum-ii-primary-follicle-iii-primary-oocytes-iv-graafian-follicle

slug:
arrange-the-formation-of-the-following-cells-in-the-ovary-in-the-sequential-order-i-ovum-ii-primary-follicle-iii-primary-oocytes-iv-graafian-follicle-75491

question:
<div class="question"><p>Arrange the formation of the following cells in the ovary in the sequential order:</p> <p>i) Ovum<br/>
ii) Primary follicle<br/>
iii) Primary oocytes<br/>
iv) Graafian follicle</p> <p><br/>
 </p> </div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">ii), i), iv), iii)</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">iii), ii), i), iv)</span> </li><li class="correct"> <span class="option-label">C</span> <span class="option-data">iii), ii), iv), i)</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li><li class=""> <span class="option-label">D</span> <span class="option-data">i), ii), iii), iv)</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">iii), ii), iv), i)</span> </div>

answer:
<div class="solution">In an ovary, there are millions of oocytes. An oocyte is not the same thing as a germ cell. The germ cells develop in the fetal ovary and before birth begin meiosis, and then freeze right at the start of the first meiotic division. These cells are stopped in prophase I of meiosis I, and are called primary oocytes. They lie within the ovaries surrounded by other cells, the follicular cells. The primary oocyte plus its follicular cells comprise the primary follicle.<br/><br/>At puberty, each oocyte enters meiosis again, just before it is ready to be ovulated. This means some oocytes can remain dormant for up to 50 years. FSH and LH act on a primary follicle in the ovaries, promoting its development into a secondary follicle.<br/><br/>The secondary follicle will continue to develop, and eventually forms a mature ovarian follicle called a tertiary, or Graafian, follicle. Once this mature follicle has developed, the further rise in oestrogen leads to a surge in LH (and some FSH), which stimulates ovulation.<br/><br/>The ovum (surrounded by its zona pellucida and cumulus of granulosa cells) will burst out of the follicle, ovulated and free to travel towards the uterus, hoping to meet a sperm cell on the way.<br/><br/><img alt="" id="Picture 1" src="https://cdn-question-pool.getmarks.app/nta_abhyas/neet/images/IL0002986_AnsExp2_1.jpg"/></div>


title: as-a-tree-grows-very-old-which-of-the-following-increases-more-rapidly-in-thickness
slug: as-a-tree-grows-very-old-which-of-the-following-increases-more-rapidly-in-thickness-45552
tags: ['Biology', 'Anatomy of Flowering Plants', 'NEET']
source_db: MarksBatch1_P1.db
question:
<div class="question">As a tree grows very old, which of the following increases more rapidly in thickness?</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">Cortex</span> </li><li class="correct"> <span class="option-label">B</span> <span class="option-data">Heartwood</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li><li class=""> <span class="option-label">C</span> <span class="option-data">Phloem</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">Pericycle</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">Heartwood</span> </div>

answer:
<div class="solution">As a tree matures, secondary growth results in more amount of secondary xylem as compared to secondary phloem. This secondary xylem gradually becomes non functional and forms heart wood.</div>


title: as-compared-to-a-dicot-root-a-monocot-root-has-1
slug: as-compared-to-a-dicot-root-a-monocot-root-has-1-66240
question: <div class="question">As compared to a dicot root, a monocot root has</div>
tags: ['Biology', 'Anatomy of Flowering Plants', 'NEET', 'NEET 2012 (Mains)']
source_db: MarksBatch1_P1.db
options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">more abundant secondary xylem</span> </li><li class="correct"> <span class="option-label">B</span> <span class="option-data">many xylem bundles</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li><li class=""> <span class="option-label">C</span> <span class="option-data">inconspicuous annual rings</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">relatively thicker periderm</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">many xylem bundles</span> </div>

answer:
<div class="solution">The vasculature is radial in dicot root i.e., xylem bundles alternate with phloem bundles. Usually vascular bundles are $2-6$ in number while in monocot root the vascular strand consists of several ( 8 or more) alternate radial xylem and phloem bundles. Secondary growth takes place in dicot root while absent in monocot roots and annual rings do not form.</div>


title: as-compared-to-a-dicot-root-a-monocot-root-has
slug: as-compared-to-a-dicot-root-a-monocot-root-has-47602
question: <div class="question">As compared to a dicot root, a monocot root has</div>
tags: ['Biology', 'Anatomy of Flowering Plants', 'NEET']
source_db: MarksBatch1_P1.db
options:
<ul class="options"> <li class="correct"> <span class="option-label">A</span> <span class="option-data">Many xylem bundles.</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li><li class=""> <span class="option-label">B</span> <span class="option-data">Relatively thicker periderm.</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">Inconspicuous annual rings.</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">More abundant secondary xylem.</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">Many xylem bundles.</span> </div>

answer:
<div class="solution">Vascular bundles in monocot root are arranged radially having eight bundles each of xylem and phloem. This type of arrangement is basically called as polyarch with xylem in exarch condition.</div>


tags: ['Chemistry', 'Coordination Compounds', 'JEE Main']
source_db: MarksBatch1_P1.db
title:
as-per-the-postulates-of-werners-theory-for-coordination-compounds-which-of-the-following-is-correct

slug:
as-per-the-postulates-of-werners-theory-for-coordination-compounds-which-of-the-following-is-correct-56364

question:
<div class="question">As per the postulates of Werner's theory for coordination compounds, which of the following is correct?</div>

options:
<ul class="options"> <li class="correct"> <span class="option-label">A</span> <span class="option-data">Primary valencies are ionisable.</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li><li class=""> <span class="option-label">B</span> <span class="option-data">Secondary valencies are ionisable.</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">Only primary valencies are non-ionisable.</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">Primary and secondary valencies are non-ionisable.</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">Primary valencies are ionisable.</span> </div>

answer:
<div class="solution"><blockquote><p>As per the postulates of Werner's theory for coordination compounds, metal atoms exhibit two types of valencies, i.e., primary valency and secondary valency. The primary valency is ionisable, whereas the secondary valency is non-ionisable.</p></blockquote></div>


title: as-secondary-growth-proceeds-in-a-dicot-stem-the-thickness-of
slug: as-secondary-growth-proceeds-in-a-dicot-stem-the-thickness-of-11145
question: <div class="question">As secondary growth proceeds, in a dicot stem, the thickness of</div>
tags: ['Biology', 'Anatomy of Flowering Plants', 'AIIMS', 'AIIMS 2016']
source_db: MarksBatch1_P1.db
options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">sapwood increases</span> </li><li class="correct"> <span class="option-label">B</span> <span class="option-data">heartwood increases</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li><li class=""> <span class="option-label">C</span> <span class="option-data">both sapwood and heartwood increases</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">both sapwood and heartwood remains the same.</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">heartwood increases</span> </div>

answer:
<div class="solution">In a woody stem, due to secondary growth, secondary xylem constitutes the bulk of the stem and is commonly called wood. The secondary xylem consists of vessels, tracheids, wood parenchyma and wood fibres. Width of secondary xylem increases continuously with the age of the plant. In older stems, the wood (or secondary xylem) gets differentiated into two zones - the outer light coloured younger sapwood and the inner darker older heartwood. The xylem vessels and tracheids of heartwood become non-functional because they get filled with resins, tannins, gums etc. produced by adjacent living parenchymatous cells and due to tyloses. Changes in the nature of sapwood occur with the death of parenchyma cells and with the completion of these changes, heartwood is formed. Thus, the conversion of sapwood into heartwood is a progressive phenomenon which continues throughout the life of the plant. Initially, both sapwood and heartwood increase in size but as a tree reaches a certain age, amount of heartwood increases continuously and the amount of sapwood remains almost constant.</div>


tags: ['Physics', 'Current Electricity', 'JEE Main', 'JEE Main 2022 (28 Jul Shift 1)']
options: None
correct_option: <div class="correct-answer"> The correct answer is: <span class="option-value">780</span> </div>
source_db: MarksBatch1_P1.db
title:
as-shown-in-the-figure-a-potentiometer-wire-of-resistance-20-and-length-300-cm-is-connected-with-resistance-box-rb-and-a-standard-cell-of-emf-4-v-for-

slug:
as-shown-in-the-figure-a-potentiometer-wire-of-resistance-20-and-length-300-cm-is-connected-with-resistance-box-rb-and-a-standard-cell-of-emf-4-v-for-66975

question:
<div class="question"><p>As shown in the figure, a potentiometer wire of resistance <math xmlns="http://www.w3.org/1998/Math/MathML"><mn>20</mn><mo> </mo><mi mathvariant="normal">Ω</mi></math> and length <math xmlns="http://www.w3.org/1998/Math/MathML"><mn>300</mn><mo> </mo><mi>cm</mi></math> is connected with resistance box (R.B.) and a standard cell of emf <math xmlns="http://www.w3.org/1998/Math/MathML"><mn>4</mn><mo> </mo><mi mathvariant="normal">V</mi></math>. For a resistance '<math xmlns="http://www.w3.org/1998/Math/MathML"><mi>R</mi></math>' of resistance box introduced into the circuit, the null point for a cell of <math xmlns="http://www.w3.org/1998/Math/MathML"><mn>20</mn><mo> </mo><mi>mV</mi></math> is found to be <math xmlns="http://www.w3.org/1998/Math/MathML"><mn>60</mn><mo> </mo><mi>cm</mi></math>. The value of '<math xmlns="http://www.w3.org/1998/Math/MathML"><mi>R</mi></math>' is _____ <math xmlns="http://www.w3.org/1998/Math/MathML"><mi mathvariant="normal">Ω</mi></math>.</p><p><img src="https://cdn-question-pool.getmarks.app/pyq/jee_main/d4323323-403e-4e0a-a7bc-938379eab464-image.png" style="width: 150px; height: 152px;"/></p></div>

answer:
<div class="solution"><blockquote><p>Given here, <math xmlns="http://www.w3.org/1998/Math/MathML"><mi>l</mi><mo>=</mo><mn>300</mn><mo> </mo><mi>cm</mi></math>, <math xmlns="http://www.w3.org/1998/Math/MathML"><msub><mi>R</mi><mi>w</mi></msub><mo>=</mo><mn>20</mn><mo> </mo><mi mathvariant="normal">Ω</mi></math> and <math xmlns="http://www.w3.org/1998/Math/MathML"><mi>ε</mi><mo>=</mo><mn>4</mn><mo> </mo><mi mathvariant="normal">V</mi></math>.</p><p>Using the relation, <math xmlns="http://www.w3.org/1998/Math/MathML"><msub><mi>E</mi><mn>2</mn></msub><mo>=</mo><mfrac><msub><mi>l</mi><mn>1</mn></msub><msub><mi>l</mi><mn>2</mn></msub></mfrac><msub><mi>E</mi><mn>1</mn></msub></math>, we have</p><p><math xmlns="http://www.w3.org/1998/Math/MathML"><mi>E</mi><mo>=</mo><mfrac><mrow><mi>A</mi><mi>C</mi></mrow><mrow><mi>A</mi><mi>B</mi></mrow></mfrac><mfenced><mrow><msub><mi>V</mi><mi>A</mi></msub><mo>-</mo><msub><mi>V</mi><mi>B</mi></msub></mrow></mfenced></math></p><p><math xmlns="http://www.w3.org/1998/Math/MathML"><mo>∴</mo><mn>20</mn><mo>×</mo><msup><mn>10</mn><mrow><mo>-</mo><mn>3</mn></mrow></msup><mo>=</mo><mfrac><mn>60</mn><mn>300</mn></mfrac><mo>×</mo><mfrac><mrow><mn>4</mn><mo>×</mo><mn>20</mn></mrow><mrow><mi>R</mi><mo>+</mo><mn>20</mn></mrow></mfrac><mspace linebreak="newline"></mspace><mo>⇒</mo><mn>5</mn><mo>×</mo><msup><mn>10</mn><mrow><mo>-</mo><mn>3</mn></mrow></msup><mo>=</mo><mfrac><mn>4</mn><mrow><mi>R</mi><mo>+</mo><mn>20</mn></mrow></mfrac></math></p><p><math xmlns="http://www.w3.org/1998/Math/MathML"><mo>∴</mo><mi>R</mi><mo>=</mo><mn>780</mn><mo> </mo><mi mathvariant="normal">Ω</mi></math></p></blockquote></div>


tags: ['Physics', 'Gravitation', 'AP EAMCET', 'AP EAMCET 2022 (07 Jul Shift 2)']
source_db: MarksBatch1_P1.db
title:
as-shown-in-the-figure-two-spherical-cavities-are-made-in-the-uniform-solid-sphere-of-radius-r-the-boundaries-of-the-cavities-touch-at-the-centre-of-t

slug:
as-shown-in-the-figure-two-spherical-cavities-are-made-in-the-uniform-solid-sphere-of-radius-r-the-boundaries-of-the-cavities-touch-at-the-centre-of-t-58348

question:
<div class="question">As shown in the figure, two spherical cavities are made in the uniform solid sphere of radius $R$. The boundaries of the cavities touch at the centre of the sphere. The centers of the cavities and the sphere lie on the $X$-axis. The mass of the solid sphere before the cavities were created was $M$. The gravitational force on a point mass $m$ at a distance $d$ away from the centre of the solid sphere is<br/><img src="https://cdn-question-pool.getmarks.app/pyq/ap_eamcet/LiXqKE_A9P2gEpi6N6jjJfEVu3u54_P9BVngFb15LkU.original.fullsize.png"/><br/></div>

options:
<ul class="options"> <li class="correct"> <span class="option-label">A</span> <span class="option-data">$\frac{G M m}{d^2}\left[1-\frac{1}{8} \frac{1}{\left(1+\frac{R}{2 d}\right)^2}-\frac{1}{8} \frac{1}{\left(1-\frac{R}{2 d}\right)^2}\right]$</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li><li class=""> <span class="option-label">B</span> <span class="option-data">$\frac{G M m}{d^2}\left[1-\frac{1}{8} \frac{1}{\left(1+\frac{R}{d}\right)^2}-\frac{1}{8} \frac{1}{\left(1-\frac{R}{d}\right)^2}\right]$</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">$\frac{G M m}{d^2}\left[1-\frac{1}{8} \frac{1}{\left(1+\frac{d}{R}\right)^2}-\frac{1}{8} \frac{1}{\left(1-\frac{d}{R}\right)^2}\right]$</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">$\frac{G M m}{d^2}\left[1-\frac{1}{8} \frac{1}{\left(1+\frac{d}{R}\right)^2}+\frac{1}{8} \frac{1}{\left(1-\frac{d}{R}\right)^2}\right]$</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">$\frac{G M m}{d^2}\left[1-\frac{1}{8} \frac{1}{\left(1+\frac{R}{2 d}\right)^2}-\frac{1}{8} \frac{1}{\left(1-\frac{R}{2 d}\right)^2}\right]$</span> </div>

answer:
<div class="solution">Given situation is as shown<br/><img src="https://cdn-question-pool.getmarks.app/pyq/ap_eamcet/5os7pJevFiXUmVBqnE-AazwFsYEBri1fcAnA4v_AGNc.original.fullsize.png"/><br/><br/>Radius of sphere given $=R$<br/>Mass of sphere $=M$<br/>Density of sphere, $d=\frac{M}{\frac{4}{3} \pi R^3}$<br/>Radius of each of cavity $=R / 2$<br/>Mass of each of portion removed to create a cavity $=$ density $\times$ volume<br/>$$<br/>=\frac{M}{\frac{4}{3} \pi R^3} \times \frac{4}{3} \pi\left(\frac{R}{2}\right)^3=\frac{M}{8}<br/>$$<br/><br/>Now, force of gravity on $m$,<br/>$F$ = force due to complete sphere of mass $M$ - force of mass of cavity of sphere centre at $A$ - force of mass of cavity of sphere centre at $B$.<br/>$\begin{aligned} &amp; =\frac{G M m}{d^2}=\frac{G M^{\prime} m}{\left(d+\frac{R}{2}\right)^2}-\frac{G M^{\prime} m}{\left(d-\frac{R}{2}\right)^2} \\ &amp; \Rightarrow F=\frac{G M m}{d^2}-\frac{G M m}{8\left(d+\frac{R}{2}\right)^2}-\frac{G M m}{8\left(d-\frac{R}{2}\right)^2} \\ &amp; =G M m\left(\frac{1}{d^2}-\frac{1}{8\left(d+\frac{R}{2}\right)^2}-\frac{1}{8\left(d-\frac{R}{2}\right)^2}\right) \\ &amp; =\frac{G M m}{d^2}\left(1-\frac{1}{8\left(1+\frac{R}{2 d}\right)^2}-\frac{1}{8\left(1-\frac{R}{2 d}\right)^2}\right)\end{aligned}$</div>


tags: ['Biology', 'Anatomy of Flowering Plants', 'NEET']
source_db: MarksBatch1_P1.db
title:
as-we-go-from-periphery-to-the-centre-of-a-dicot-root-the-correct-order-of-tissues-that-we-will-encounter-is

slug:
as-we-go-from-periphery-to-the-centre-of-a-dicot-root-the-correct-order-of-tissues-that-we-will-encounter-is-67231

question:
<div class="question">As we go from periphery to the centre of a dicot root, the correct order of tissues that we will encounter is</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">Epiblema - Cortex - Endodermis - Metaxylem - Protoxylem - Pith</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">Cortex - Epiblema - Endodermis - Metaxylem - Protoxylem - Pith</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">Cortex - Epiblema - Endodermis - Protoxylem - Metaxylem - Pith</span> </li><li class="correct"> <span class="option-label">D</span> <span class="option-data">Epiblema - Cortex - Endodermis - Protoxylem - Metaxylem - Pith</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">Epiblema - Cortex - Endodermis - Protoxylem - Metaxylem - Pith</span> </div>

answer:
<div class="solution">The outermost layer is epiblema. Many of the cells of epiblema protrude in the form of unicellular root hairs. The cortex consists of several layers of thin-walled parenchyma cells with intercellular spaces. The innermost layer of the cortex is called endodermis. It comprises a single layer of barrel-shaped cells without any intercellular spaces. The tangential, as well as radial walls of the endodermal cells, have a deposition of water-impermeable, waxy material suberin in the form of Casparian strips. Next to endodermis lies a few layers of thick-walled parenchyomatous cells referred to as pericycle. The initiation of lateral roots and vascular cambium during secondary growth takes place in these cells. The pith is small or inconspicuous. The parenchymatous cells which lie between the xylem and the phloem are called conjunctive tissue. There are usually two to four xylem and phloem patches. Later, a cambium ring develops between the xylem and phloem. All tissues on the inner side of the endodermis such as pericycle, vascular bundles, and pith constitute the stele.<br/><br/><img alt="" src="https://cdn-question-pool.getmarks.app/nta_abhyas/neet/images/DR.jpg" style="width: 350px; height: 318px;"/></div>


title: assertion-a-2-1-3-29-2-1-3-29-1-reason-r-2-1
slug: assertion-a-2-1-3-29-2-1-3-29-1-reason-r-2-1-87420
tags: ['Mathematics', 'Complex Number', 'NDA', 'NDA 2009 (Phase 1)']
source_db: MarksBatch1_P1.db
question:
<div class="question">Assertion $(\mathbf{A}):\left(\frac{-1+\sqrt{-3}}{2}\right)^{29}+\left(\frac{-1-\sqrt{-3}}{2}\right)^{29}=-1$<br/>Reason $(\mathbf{R}): \omega^{2}=-1$</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">Both A and $\mathrm{R}$ are true and $\mathrm{R}$ is the correct explanation of A</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">Both A and $\mathrm{R}$ are true but $\mathrm{R}$ is not the correct explanation of A</span> </li><li class="correct"> <span class="option-label">C</span> <span class="option-data">$\mathrm{A}$ is true but $\mathrm{R}$ is false</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li><li class=""> <span class="option-label">D</span> <span class="option-data">A is false but $\mathrm{R}$ is true</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">$\mathrm{A}$ is true but $\mathrm{R}$ is false</span> </div>

answer:
<div class="solution">(A) Consider $\left[\frac{-1+\sqrt{-3}}{2}\right]^{29}+\left[\frac{-1-\sqrt{-3}}{2}\right]^{29}$<br/>$=\left[\frac{-1+\sqrt{3 i}}{2}\right]^{29}+\left[\frac{-1-\sqrt{3 i}}{2}\right]^{29}$<br/>$=(\omega)^{29}+\left(\omega^{2}\right)^{29}=\omega^{27} \cdot \omega^{2}+\left(\omega^{3}\right)^{19} \cdot \omega$<br/>$=\left(\omega^{3}\right)^{9} \omega^{2}+\left(\omega^{3}\right)^{19} \cdot \omega$<br/>$=1 . \omega^{2}+1 \cdot \omega \quad\left(\because \omega^{3}=1\right)$<br/>$=\omega^{2}+\omega=-1$<br/>(R) $\omega^{2} \neq-1$<br/>A is true but $\mathrm{R}$ is false.</div>


title: assertion-a-f-x-x-sin-x-1-is-differentiable-at-x-0-reason-r-f-x-is-continuous-at-x-0
slug: assertion-a-f-x-x-sin-x-1-is-differentiable-at-x-0-reason-r-f-x-is-continuous-at-x-0-71695
tags: ['Mathematics', 'Continuity and Differentiability', 'NDA', 'NDA 2008 (Phase 1)']
source_db: MarksBatch1_P1.db
question:
<div class="question">Assertion (A) $: f(x)=x \sin \left(\frac{1}{x}\right)$ is differentiable at $x=0$. <br/>Reason $(\mathbf{R}): \mathrm{f}(\mathrm{x})$ is continuous at $\mathrm{x}=0$</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">Both $\mathbf{A}$ and $\mathbf{R}$ are individually true, and $\mathbf{R}$ is the correct explanation of $\mathbf{A}$</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">Both $\mathbf{A}$ and $\mathbf{R}$ are individually true but $\mathbf{R}$ is not the correct explanation of $\mathbf{A}$.</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">A is true but $\mathbf{R}$ is false.</span> </li><li class="correct"> <span class="option-label">D</span> <span class="option-data">A is false but $\mathbf{R}$</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">A is false but $\mathbf{R}$</span> </div>

answer:
<div class="solution">Given function : $\mathrm{f}(\mathrm{x})=\mathrm{x} \sin \left(\frac{1}{\mathrm{x}}\right)$<br/>For differentiability at $\mathrm{x}=0 ; \mathrm{LHD}=\mathrm{RHD}$ at $\mathrm{x}=0$<br/>$\begin{aligned} \mathrm{LHD} &amp;=\lim _{\mathrm{h} \rightarrow 0} \frac{\mathrm{f}(0-\mathrm{h})-\mathrm{f}(0)}{-\mathrm{h}} \\ &amp;=\lim _{\mathrm{h} \rightarrow 0} \frac{(-\mathrm{h}) \sin \left(-\frac{1}{\mathrm{~h}}\right)}{-\mathrm{h}}=\lim _{\mathrm{h} \rightarrow 0} \frac{\mathrm{h} \sin \left(\frac{1}{\mathrm{~h}}\right)}{-\mathrm{h}} \end{aligned}$<br/>$=\lim _{h \rightarrow 0} \sin \left(\frac{1}{h}\right)=a$ finite value lies between $-1$<br/>and 1 which cannot be qualified exactly.<br/>$\mathrm{RHD}=\lim _{\mathrm{h} \rightarrow 0} \frac{\mathrm{f}(0+\mathrm{h})-\mathrm{f}(0)}{\mathrm{h}}$<br/>$=\lim _{\mathrm{h} \rightarrow 0} \frac{\mathrm{h} \sin \left(\frac{1}{\mathrm{~h}}\right)}{\mathrm{h}}=\lim _{\mathrm{h} \rightarrow 0} \sin \left(\frac{1}{\mathrm{~h}}\right)$<br/>$=$ a finite value lies between $-1$ and 1 which cannot be qualified exactly. $\mathrm{LHD} \neq \mathrm{RHD} \neq$ a definite value.<br/>Hence, $\mathrm{f}(\mathrm{x})$ is not differentiable at $\mathrm{x}=0$. For continuity at $\mathrm{x}=0$ :<br/>$\lim _{x \rightarrow 0}$ LHL $=\lim _{x \rightarrow 0} \mathrm{RHL}=\mathrm{V} . \mathrm{F}$. at $\mathrm{x}=0$<br/>$\mathrm{LHL}=\lim _{\mathrm{x} \rightarrow 0} \mathrm{f}(0-\mathrm{h})=\lim _{\mathrm{h} \rightarrow 0}-\mathrm{h} \sin \left(-\frac{1}{\mathrm{~h}}\right)$<br/>$=\lim _{h \rightarrow 0} \mathrm{~h} \sin \frac{1}{\mathrm{~h}}=0$<br/>$\mathrm{RHL}=\lim _{\mathrm{x} \rightarrow 0^{\prime}} \mathrm{f}(0+\mathrm{h})=\lim _{\mathrm{h} \rightarrow 0} \mathrm{~h} \sin \frac{1}{\mathrm{~h}}=0$<br/>$\mathrm{f}(0)=0$<br/>$\Rightarrow \mathrm{LHL}=\mathrm{RHL}=\mathrm{f}(0)$<br/>Hence, $\mathrm{f}(\mathrm{x})$ is continuous at $\mathrm{x}=0$ Thus, (A) is false but $(\mathrm{R})$ is true.</div>


tags: ['Chemistry', 'Thermodynamics (C)', 'AP EAMCET', 'AP EAMCET 2017 (26 Apr Shift 2)']
answer: <div class="solution">No solution. Refer to answer key.</div>
source_db: MarksBatch1_P1.db
title:
assertion-a-for-every-chemical-reaction-at-equilibrium-standard-gibbs-energy-change-of-the-reaction-is-zero-reason-r-at-constant-temperature-and-press

slug:
assertion-a-for-every-chemical-reaction-at-equilibrium-standard-gibbs-energy-change-of-the-reaction-is-zero-reason-r-at-constant-temperature-and-press-46443

question:
<div class="question">Assertion (A) : For every chemical reaction at equilibrium, standard Gibbs energy change of the reaction is zero<br/>Reason (R) : At constant temperature and pressure chemical reactions are spontaneous in the direction of decreasing Gibbs energy.</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">Both (A) and (R) are correct and (R) is the correct explanation of (A)</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">Both (A) and (R) are correct but (R) is not the correct explanation of (A)</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">(A) is correct and (R) is not correct</span> </li><li class="correct"> <span class="option-label">D</span> <span class="option-data">(A) is not correct but (R) is correct</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">(A) is not correct but (R) is correct</span> </div>


title: assertion-a-if-f-x-lo-g-x-then-f-x-0-for-all-x-0-reason-r-f-x-lo-g-x-is-defined-for-all-x-0
slug: assertion-a-if-f-x-lo-g-x-then-f-x-0-for-all-x-0-reason-r-f-x-lo-g-x-is-defined-for-all-x-0-66045
tags: ['Mathematics', 'Functions', 'NDA', 'NDA 2008 (Phase 1)']
source_db: MarksBatch1_P1.db
question:
<div class="question">Assertion (A) $:$ If $f(x)=\log x$, then $f(x)&gt;0$ for all $x&gt;0$. <br/>Reason $(\mathbf{R}): \mathrm{f}(\mathrm{x})=\log \mathrm{x}$, is defined for all $\mathrm{x}&gt;0$</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">Both $\mathbf{A}$ and $\mathbf{R}$ are individually true, and $\mathbf{R}$ is the correct explanation of $\mathbf{A}$</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">Both $\mathbf{A}$ and $\mathbf{R}$ are individually true but $\mathbf{R}$ is not the correct explanation of $\mathbf{A}$.</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">A is true but $\mathbf{R}$ is false.</span> </li><li class="correct"> <span class="option-label">D</span> <span class="option-data">A is false but $\mathbf{R}$</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">A is false but $\mathbf{R}$</span> </div>

answer:
<div class="solution">$(A): f(x)=\log x$ for $x=1, f(x)=\log 1=0$<br/>$(\mathrm{R}): \mathrm{f}(\mathrm{x})=\log \mathrm{x}$<br/>and $\mathrm{f}(\mathrm{x}) \geq 0 \forall \mathrm{x}&gt;0$<br/>Thus, (A) is false but $(\mathrm{R})$ is true.</div>


tags: ['Chemistry', 'Biomolecules', 'TS EAMCET', 'TS EAMCET 2021 (05 Aug Shift 1)']
source_db: MarksBatch1_P1.db
title:
assertion-a-in-aqueous-solution-amino-acids-exists-as-internal-salt-called-as-zwitter-ion-reason-r-proline-is-a-natural-amino-acid-having-a-secondary-

slug:
assertion-a-in-aqueous-solution-amino-acids-exists-as-internal-salt-called-as-zwitter-ion-reason-r-proline-is-a-natural-amino-acid-having-a-secondary-60555

question:
<div class="question"><p>Assertion (A) : In aqueous solution, <math xmlns="http://www.w3.org/1998/Math/MathML"><mi>α</mi></math>-amino acids exists as internal salt called as zwitter ion.</p><p>Reason (R) : Proline is a natural amino acid having a secondary amino group.<br/>The correct option among the following is</p></div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">(A) is true, (R) is true and (R) is the correct explanation for (A)</span> </li><li class="correct"> <span class="option-label">B</span> <span class="option-data">(A) is true, (R) is true but (R) is not the correct explanation for (A)</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li><li class=""> <span class="option-label">C</span> <span class="option-data">(A) is true but (R) is false</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">(A) is false but (R) is true</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">(A) is true, (R) is true but (R) is not the correct explanation for (A)</span> </div>

answer:
<div class="solution"><p>In aqueous solution, the carboxyl group can lose a proton and amino group can accept a proton, giving rise to a dipolar ion known as zwitter ion. This is neutral but contains both positive and negative charges.</p><p>In zwitter ionic form, amino acids show amphoteric behaviour as they react both with acids and bases.</p><p>Proline has a secondary amine group</p><p><img alt="" src="https://cdn-question-pool.getmarks.app/pyq/ts_eamcet/6aa46cb3-ec22-42df-b651-2683cbe00fc9-prolinenew.png" style="width: 180px; height: 115px;"/></p></div>


tags: ['Biology', 'Principles of Inheritance and Variation', 'AIIMS', 'AIIMS 2012']
source_db: MarksBatch1_P1.db
title:
assertion-a-middle-aged-woman-is-reported-to-have-small-breasts-and-undersized-uterus-reason-her-genotypic-analysis-shows-xo-condition-of-allosomes

slug:
assertion-a-middle-aged-woman-is-reported-to-have-small-breasts-and-undersized-uterus-reason-her-genotypic-analysis-shows-xo-condition-of-allosomes-13675

question:
<div class="question"><strong>Assertion :</strong> A middle aged woman is reported to have small breasts and undersized uterus.<strong>Reason :</strong> Her genotypic analysis shows XO condition of allosomes.</div>

options:
<ul class="options"> <li class="correct"> <span class="option-label">A</span> <span class="option-data">If both assertion and reason are true and reason is the correct explanation of assertion</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li><li class=""> <span class="option-label">B</span> <span class="option-data">If both assertion and reason are true but reason is not the correct explanation of assertion</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">If assertion is true but reason is false</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">If both assertion and reason are false</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">If both assertion and reason are true and reason is the correct explanation of assertion</span> </div>

answer:
<div class="solution">Females having 45 chromosomes $(2 \mathrm{~A}+\mathrm{X} 0)$ are affected with Turner's syndrome. Individuals having Turner's syndrome have female sexual differentiation but ovaries are rudimentary. Other associated phenotypes of this condition are short stature, webbed-neck, broad chest, lack of secondary sexual characteristics and sterility. Thus, any imbalance in the copies of the sex chromosomes may disrupt the genetic information necessary for normal sexual development.</div>


tags: ['Biology', 'Organisms and Populations', 'AIIMS', 'AIIMS 2006']
source_db: MarksBatch1_P1.db
title:
assertion-a-network-of-food-chains-existing-together-in-an-ecosystem-is-known-as-a-food-web-reason-an-animal-like-kite-cannot-be-a-part-of-a-food-web

slug:
assertion-a-network-of-food-chains-existing-together-in-an-ecosystem-is-known-as-a-food-web-reason-an-animal-like-kite-cannot-be-a-part-of-a-food-web-68969

question:
<div class="question">Assertion : A network of food chains existing together in an ecosystem is known as a food web. <br/>Reason : An animal like kite cannot be a part of a food web.</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">If both assertion and reason are true and reason is the correct explanation of the assertion</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">If both assertion and reason are true but reason is not the correct explanation of the assertion</span> </li><li class="correct"> <span class="option-label">C</span> <span class="option-data">If assertion is true, but reason is false</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li><li class=""> <span class="option-label">D</span> <span class="option-data">Both assertion and reason are false statements.</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">If assertion is true, but reason is false</span> </div>

answer:
<div class="solution">The process of transfer of energy from producers through a series of organisms i.e. from primary consumers to secondary consumers to tertiary consumers by process of eating and being eaten constitute a food chain, eg. grassland ecosystem. Food chains can never occur independently in ecosystem but various food chains are inter-connected with each other forming an interlocked system known as food web. In grassland ecosystem food chains may be-<br/>(i) Grass $\rightarrow$ Rabbit $\rightarrow$ Hawk/kite<br/>(ii) Grass $\rightarrow$ Mouse $\rightarrow$ Snake $\rightarrow$ Kite/Hawk<br/>(iii) Grass $\rightarrow$ Grasshopper $\rightarrow$ Lizard $\rightarrow$ Kite/Hawk<br/>So, the food web will include kite.</div>


tags: ['Chemistry', 'Hydrocarbons', 'AP EAMCET', 'AP EAMCET 2018 (25 Apr Shift 1)']
source_db: MarksBatch1_P1.db
title:
assertion-a-propene-on-addition-with-hydrogen-bromide-in-the-presence-of-peroxide-gives-1-bromopropane-as-the-major-product-reason-r-1-bromopropane-is

slug:
assertion-a-propene-on-addition-with-hydrogen-bromide-in-the-presence-of-peroxide-gives-1-bromopropane-as-the-major-product-reason-r-1-bromopropane-is-70174

question:
<div class="question"><p>Assertion <math xmlns="http://www.w3.org/1998/Math/MathML"><mo>(</mo><mi mathvariant="normal">A</mi><mo>)</mo><mo>:</mo></math> Propene on addition with hydrogen bromide in the presence of peroxide gives <math xmlns="http://www.w3.org/1998/Math/MathML"><mn>1</mn></math>- Bromopropane as the major product</p><p>Reason <math xmlns="http://www.w3.org/1998/Math/MathML"><mo>(</mo><mi mathvariant="normal">R</mi><mo>)</mo><mo>:</mo><mo> </mo><mn>1</mn></math>- Bromopropane is the major product because it is formed through the stable carbocation</p></div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data"><math xmlns="http://www.w3.org/1998/Math/MathML"><mo>(</mo><mi mathvariant="normal">A</mi><mo>)</mo></math> and <math xmlns="http://www.w3.org/1998/Math/MathML"><mo>(</mo><mi mathvariant="normal">R</mi><mo>)</mo></math> are correct, <math xmlns="http://www.w3.org/1998/Math/MathML"><mo>(</mo><mi mathvariant="normal">R</mi><mo>)</mo></math> is the correct explanation of <math xmlns="http://www.w3.org/1998/Math/MathML"><mo>(</mo><mi mathvariant="normal">A</mi><mo>)</mo></math></span> </li><li class=""> <span class="option-label">B</span> <span class="option-data"><math xmlns="http://www.w3.org/1998/Math/MathML"><mo>(</mo><mi mathvariant="normal">A</mi><mo>)</mo></math> and <math xmlns="http://www.w3.org/1998/Math/MathML"><mo>(</mo><mi mathvariant="normal">R</mi><mo>)</mo></math> are correct but <math xmlns="http://www.w3.org/1998/Math/MathML"><mo>(</mo><mi mathvariant="normal">R</mi><mo>)</mo></math> is not the correct explanation of <math xmlns="http://www.w3.org/1998/Math/MathML"><mo>(</mo><mi mathvariant="normal">A</mi><mo>)</mo></math></span> </li><li class="correct"> <span class="option-label">C</span> <span class="option-data"><math xmlns="http://www.w3.org/1998/Math/MathML"><mo>(</mo><mi mathvariant="normal">A</mi><mo>)</mo></math> is correct but <math xmlns="http://www.w3.org/1998/Math/MathML"><mo>(</mo><mi mathvariant="normal">R</mi><mo>)</mo></math> is not correct</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li><li class=""> <span class="option-label">D</span> <span class="option-data"><math xmlns="http://www.w3.org/1998/Math/MathML"><mo>(</mo><mi mathvariant="normal">A</mi><mo>)</mo></math> is not correct but <math xmlns="http://www.w3.org/1998/Math/MathML"><mo>(</mo><mi mathvariant="normal">R</mi><mo>)</mo></math> is correct</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value"><math xmlns="http://www.w3.org/1998/Math/MathML"><mo>(</mo><mi mathvariant="normal">A</mi><mo>)</mo></math> is correct but <math xmlns="http://www.w3.org/1998/Math/MathML"><mo>(</mo><mi mathvariant="normal">R</mi><mo>)</mo></math> is not correct</span> </div>

answer:
<div class="solution"><p>When <math xmlns="http://www.w3.org/1998/Math/MathML"><mi>HBr</mi></math> is added to propene, in the presence of benzoyl peroxide, the reaction yields <math xmlns="http://www.w3.org/1998/Math/MathML"><mn>1</mn><mo>-</mo></math> bromopropane, accordance with anti Markovnikov's rule. The reaction proceeds through free radical mechanism.</p><p>Addition of <math xmlns="http://www.w3.org/1998/Math/MathML"><mi>HBr</mi></math> to propene yields <math xmlns="http://www.w3.org/1998/Math/MathML"><mn>2</mn><mo>-</mo></math>bromopropane, accordance with Markovnikov's rule. The reaction proceeds through ionic mechanism and involves formation of carbocation intermediate. Secondary carbocation is more stable than primary carbocation and is preferentially formed.</p></div>


tags: ['Physics', 'Ray Optics', 'AIIMS', 'AIIMS 2015']
source_db: MarksBatch1_P1.db
title:
assertion-a-secondary-rainbow-have-inverted-colours-than-the-primary-rainbow-reason-the-secondary-rainbow-is-formed-by-single-total-internal-reflectio

slug:
assertion-a-secondary-rainbow-have-inverted-colours-than-the-primary-rainbow-reason-the-secondary-rainbow-is-formed-by-single-total-internal-reflectio-58508

question:
<div class="question">Assertion: A secondary rainbow have inverted colours than the primary rainbow.<br/>Reason : The secondary rainbow is formed by single total internal reflection.</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">If both assertion and reason are true and reason is the correct explanation of assertion.</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">Ifboth assertion and reason are true but reason is not the correct explanation of assertion.</span> </li><li class="correct"> <span class="option-label">C</span> <span class="option-data">If assertion is true but reason is false.</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li><li class=""> <span class="option-label">D</span> <span class="option-data">If both assertion and reason are false.</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">If assertion is true but reason is false.</span> </div>

answer:
<div class="solution">In the formation of secondary rainbow, light suffers two total internal reflections instead of one. In this, ray undergoes two internal partial reflections having a maximum deviation of about $50^{\circ}$ for red and $54^{\circ}$ for violet. Also secondary rainbow will sometimes be formed with inverted colours. Secondary rainbow is fainter than the primary for two reason <br/>(i) the light has undergone two internal reflections and has therebybecomes weakened,<br/>(ii) there is greater angular dispersion in this rainbow than in the primary.</div>


tags: ['Chemistry', 'Biomolecules', 'TS EAMCET', 'TS EAMCET 2022 (18 Jul Shift 1)']
source_db: MarksBatch1_P1.db
title:
assertion-a-the-denaturation-of-proteins-can-destroy-all-1-2-and-3-protein-structures-reason-r-curdling-of-milk-is-due-to-denaturation-of-proteins-the

slug:
assertion-a-the-denaturation-of-proteins-can-destroy-all-1-2-and-3-protein-structures-reason-r-curdling-of-milk-is-due-to-denaturation-of-proteins-the-85517

question:
<div class="question"><p>Assertion (A): The denaturation of proteins can destroy all <math xmlns="http://www.w3.org/1998/Math/MathML"><mn>1</mn><mo>°</mo><mo>,</mo><mn>2</mn><mo>°</mo></math> and <math xmlns="http://www.w3.org/1998/Math/MathML"><mn>3</mn><mo>°</mo></math> protein structures.</p><p>Reason (R): Curdling of milk is due to denaturation of proteins.</p><p>The correct option among the following is</p></div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">(A) is true, (R) is true and (R) is the correct explanation for (A)</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">(A) is true, (R) is true but (R) is not the correct explanation for (A)</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">(A) is true but (R) is false</span> </li><li class="correct"> <span class="option-label">D</span> <span class="option-data">(A) is false but (R) is true</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">(A) is false but (R) is true</span> </div>

answer:
<div class="solution"><blockquote><p>Protein found in a biological system with a unique three-dimensional structure and biological activity is called a native protein. When a protein in its native form, is subjected to physical change like change in temperature or chemical change like change in pH, the hydrogen bonds are disturbed. Due to this, globules unfold and helix get uncoiled and protein loses its biological activity. This is called denaturation of protein.</p><p>The coagulation of egg white on boiling is a common example of denaturation. Another example is curdling of milk which is caused due to the formation of lactic acid by the bacteria present in milk.</p><p>During denaturation secondary and tertiary structures are destroyed but primary structure remains intact.</p><p>Hence,(A) is false but (R) is true</p></blockquote></div>


tags: ['Mathematics', 'Functions', 'NDA', 'NDA 2008 (Phase 2)']
source_db: MarksBatch1_P1.db
title:
assertion-a-the-function-f-1-2-3-a-b-c-d-defined-by-f-1-a-2-b-3-c-has-no-inverse-reason-r-f-is-not-oneone

slug:
assertion-a-the-function-f-1-2-3-a-b-c-d-defined-by-f-1-a-2-b-3-c-has-no-inverse-reason-r-f-is-not-oneone-71663

question:
<div class="question">Assertion (A) : The function <br/>$f:(1,2,3) \rightarrow(a, b, c, d)$ defined by<br/>$\mathrm{f}=\{(1, \mathrm{a}),(2, \mathrm{~b}),(3, \mathrm{c})\}$ has no inverse.<br/>Reason $(\mathbf{R}): f$ is not one-one.</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">Both A and $\mathrm{R}$ are individually true and $\mathrm{R}$ is the correct explanation of A</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">Both A and $\mathrm{R}$ are individually true but $\mathrm{R}$ is not the correct explanation of A</span> </li><li class="correct"> <span class="option-label">C</span> <span class="option-data">A is true but $\mathrm{R}$ is false</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li><li class=""> <span class="option-label">D</span> <span class="option-data">A is false but $\mathrm{R}$ is true</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">A is true but $\mathrm{R}$ is false</span> </div>

answer:
<div class="solution"><img src="https://cdn-question-pool.getmarks.app/pyq/nda/RSOKo007Ud04FmR4IJz7WOid_mIjPgK3m6F-610Z-RY.original.fullsize.png"/><br/><br/>Since, every element of A has only one image but $d$ has no pre-image in $A .$ So, it is one-one function. Hence, it has no inverse.</div>


tags: ['Mathematics', 'Permutation Combination', 'NDA', 'NDA 2006 (Phase 2)']
source_db: MarksBatch1_P1.db
title:
assertion-a-the-number-of-selections-of-20-distinct-things-taken-8-at-a-time-is-same-as-that-taken-12-at-a-time-reason-r-c-n-r-c-n-s-if-n-r-s

slug:
assertion-a-the-number-of-selections-of-20-distinct-things-taken-8-at-a-time-is-same-as-that-taken-12-at-a-time-reason-r-c-n-r-c-n-s-if-n-r-s-54757

question:
<div class="question">Assertion (A): The number of selections of 20 distinct things taken 8 at a time is same as that taken 12 at a time. <br/>Reason (R): $\mathrm{C}(\mathrm{n}, \mathrm{r})=\mathrm{C}(\mathrm{n}, \mathrm{s})$, if $\mathrm{n}=\mathrm{r}+\mathrm{s}$</div>

options:
<ul class="options"> <li class="correct"> <span class="option-label">A</span> <span class="option-data">Both $\mathbf{A}$ and $\mathbf{R}$ are individually true, and $\mathbf{R}$ is the correct explanation of $\mathbf{A}$.</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li><li class=""> <span class="option-label">B</span> <span class="option-data">Both $\mathbf{A}$ and $\mathbf{R}$ are individually true but $\mathbf{R}$ is not the correct explanation of $\mathbf{A}$.</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">$\mathrm{A}$ is true but $\mathbf{R}$ is false.</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">$\mathrm{A}$ is false but $\mathbf{R}$ is true.</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">Both $\mathbf{A}$ and $\mathbf{R}$ are individually true, and $\mathbf{R}$ is the correct explanation of $\mathbf{A}$.</span> </div>

answer:
<div class="solution">Number of selection of 20 distinct things taken 8 at a time is given by<br/>${ }^{20} \mathrm{C}_{8}=\frac{20 !}{12 ! 8 !}$<br/>and selecting 12 out of 20 is<br/>${ }^{20} \mathrm{C}_{12}=\frac{20 !}{12 ! 8 !}$<br/>Thus, both ${ }^{20} \mathrm{C}_{8}$ and ${ }^{20} \mathrm{C}_{12}$ are same.<br/>$\Rightarrow$ Both $\mathrm{A}$ and $\mathrm{R}$ are individually true and $\mathrm{R}$ is correct explanation of A.</div>


tags: ['Mathematics', 'Permutation Combination', 'NDA', 'NDA 2006 (Phase 2)']
source_db: MarksBatch1_P1.db
title:
assertion-a-the-number-of-triangles-that-can-be-formed-by-joining-the-midpoints-of-any-three-adjacent-faces-of-a-cube-is-20-reason-r-if-there-are-n-po

slug:
assertion-a-the-number-of-triangles-that-can-be-formed-by-joining-the-midpoints-of-any-three-adjacent-faces-of-a-cube-is-20-reason-r-if-there-are-n-po-94564

question:
<div class="question">Assertion (A): The number of triangles that can be formed by joining the mid-points of any three adjacent faces of a cube is 20 .<br/><br/>Reason (R): If there are $\mathrm{n}$ points on a plane and none of them are collinear, then the number of triangles that can be formed is $\mathrm{C}(\mathrm{n}, 3)$.</div>

options:
<ul class="options"> <li class="correct"> <span class="option-label">A</span> <span class="option-data">Both $\mathbf{A}$ and $\mathbf{R}$ are individually true, and $\mathbf{R}$ is the correct explanation of $\mathbf{A}$.</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li><li class=""> <span class="option-label">B</span> <span class="option-data">Both $\mathbf{A}$ and $\mathbf{R}$ are individually true but $\mathbf{R}$ is not the correct explanation of $\mathbf{A}$.</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">$\mathrm{A}$ is true but $\mathbf{R}$ is false.</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">$\mathrm{A}$ is false but $\mathbf{R}$ is true.</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">Both $\mathbf{A}$ and $\mathbf{R}$ are individually true, and $\mathbf{R}$ is the correct explanation of $\mathbf{A}$.</span> </div>

answer:
<div class="solution">Number of faces in a cube $=6$ Number of triangles formed by joining mid points of<br/>faces is selection of three points from 6 points $={ }^{6} \mathrm{C}_{3}$<br/>$=\frac{6 !}{3 ! 3 !}=20$<br/>Hence, both $\mathrm{A}$ and $\mathrm{R}$ are individually true and $\mathrm{R}$ is correct explanation of A.</div>


tags: ['Mathematics', 'Application of Derivatives', 'NDA', 'NDA 2009 (Phase 1)']
source_db: MarksBatch1_P1.db
title:
assertion-a-the-tangent-to-the-curve-y-x-3-x-2-x-2-at-1-1-is-parallel-to-the-x-axis-reason-r-the-slope-of-the-tangent-to-the-curve-at-1-1-is-zero

slug:
assertion-a-the-tangent-to-the-curve-y-x-3-x-2-x-2-at-1-1-is-parallel-to-the-x-axis-reason-r-the-slope-of-the-tangent-to-the-curve-at-1-1-is-zero-62077

question:
<div class="question">Assertion (A): The tangent to the curve $y=x^{3}-x^{2}-x+2$ at $(1,1)$ is parallel to the $x$ -axis. Reason $(\mathbf{R}):$ The slope of the tangent to the curve at $(1,1)$ is zero.</div>

options:
<ul class="options"> <li class="correct"> <span class="option-label">A</span> <span class="option-data">Both A and Rare true and $\mathrm{R}$ is the correct explanation<br/>of A</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li><li class=""> <span class="option-label">B</span> <span class="option-data">Both Aand R are true but R is not the correct explanation of $\mathrm{A}$</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">$\mathrm{A}$ is true but $\mathrm{R}$ is false</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">$\mathrm{A}$ is false but $\mathrm{R}$ is true</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">Both A and Rare true and $\mathrm{R}$ is the correct explanation<br/>of A</span> </div>

answer:
<div class="solution">Given equation of the curve is $y=x^{3}-x^{2}-x+2$<br/>$\frac{d y}{d x}=3 x^{2}-2 x-1$<br/>$\Rightarrow\left(\frac{d y}{d x}\right)_{(1,1)}=3-2-1=0$<br/>Since, $\frac{d y}{d x}$ at $(1,1)$ is 0 $\therefore$ slope of the tangent $=0$ Hence, The equation of tangent at $(1,1)$ is $y-1=0(x-1) \Rightarrow y=1$<br/>ie, parallel to $x$ -axis. Both A and R true and $\mathrm{R}$ is the correct explanation of $\mathrm{A}$</div>


tags: ['Physics', 'Oscillations', 'AIIMS', 'AIIMS 2013']
source_db: MarksBatch1_P1.db
title:
assertion-a-undamped-springmass-system-is-simplest-free-vibration-system-reason-it-has-three-degrees-of-freedom

slug:
assertion-a-undamped-springmass-system-is-simplest-free-vibration-system-reason-it-has-three-degrees-of-freedom-13872

question:
<div class="question">Assertion : A undamped spring-mass system is simplest free vibration system.<br/>Reason : It has three degrees of freedom.</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">If both assertion and reason are true and reason is the correct explanation of assertion.</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">If both assertion and reason are true but reason is not the correct explanation of assertion.</span> </li><li class="correct"> <span class="option-label">C</span> <span class="option-data">If assertion is true but reason is false.</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li><li class=""> <span class="option-label">D</span> <span class="option-data">If both assertion and reason are false.</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">If assertion is true but reason is false.</span> </div>

answer:
<div class="solution">An undamped spring-mass system is the simplest free vibration system. It has one degree of freedom</div>


tags: ['Mathematics', 'Functions', 'NDA', 'NDA 2008 (Phase 2)']
source_db: MarksBatch1_P1.db
title:
assertion-a-y-2-x-3-is-a-one-to-one-real-valued-function-reason-r-x-1-x-2-y-1-y-2-y-1-2-x-1-3-y-2-2-x-2-3-for-any-two-real-x-1-and-x-2

slug:
assertion-a-y-2-x-3-is-a-one-to-one-real-valued-function-reason-r-x-1-x-2-y-1-y-2-y-1-2-x-1-3-y-2-2-x-2-3-for-any-two-real-x-1-and-x-2-30679

question:
<div class="question">Assertion (A): $y=2 x+3$ is a one to one real valued function. Reason $(\mathbf{R}): x_{1} \neq x_{2}$<br/>$\Rightarrow y_{1} \neq y_{2}, y_{1}=2 x_{1}+3, y_{2}=2 x_{2}+3$, for any two real<br/>$x_{1}$ and $x_{2}$</div>

options:
<ul class="options"> <li class="correct"> <span class="option-label">A</span> <span class="option-data">Both A and $\mathrm{R}$ are individually true and $\mathrm{R}$ is the correct explanation of A</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li><li class=""> <span class="option-label">B</span> <span class="option-data">Both A and $\mathrm{R}$ are individually true but $\mathrm{R}$ is not the correct explanation of A</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">A is true but $\mathrm{R}$ is false</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">A is false but $\mathrm{R}$ is true</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">Both A and $\mathrm{R}$ are individually true and $\mathrm{R}$ is the correct explanation of A</span> </div>

answer:
<div class="solution">(A) Given function is $y=2 x+3$<br/>Let $y_{1}=y_{2}\left(\right.$ To show $\left.x_{1}=x_{2}\right)$<br/>$\Rightarrow 2 x_{1}+3=2 x_{2}+3$<br/>$\Rightarrow 2 x_{1}=2 x_{2}$<br/>$\Rightarrow x_{1}=x_{2}$<br/>Hence, $y=2 x+3$ is one-one real valued function.<br/>(R) Since $y_{1}=y_{2} \Rightarrow x_{1}=x_{2}$<br/>$\therefore x_{1} \neq x_{2} \Rightarrow y_{1} \neq y_{2}$<br/>Thus, Both $(A)$ and $(R)$ are true and $R$ is the correct explanation of $A$.</div>


tags: ['Biology', 'Biotechnology and Its Applications', 'AIIMS', 'AIIMS 2018 (26 May)']
source_db: MarksBatch1_P1.db
title:
assertion-agrobacterium-tumefaciens-is-popular-in-genetic-engineering-because-this-bacterium-is-associated-with-the-roots-of-all-cereal-and-pulse-crop-1

slug:
assertion-agrobacterium-tumefaciens-is-popular-in-genetic-engineering-because-this-bacterium-is-associated-with-the-roots-of-all-cereal-and-pulse-crop-1-78681

question:
<div class="question">Assertion : Agrobacterium tumefaciens is popular in genetic engineering because this bacterium is associated with the roots of all cereal and pulse crops.<br/>Reason : A gene incorporated in the bacterial mesosome gets automatically transferred to the crop with which the bacterium is associated.</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">If both assertion and reason are true and reason is the correct explanation of assertion.</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">If both assertion and reason are true but reason is not the correct explanation of assertion.</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">If assertion is true but reason is false.</span> </li><li class="correct"> <span class="option-label">D</span> <span class="option-data">If both assertion and reason are false.</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">If both assertion and reason are false.</span> </div>

answer:
<div class="solution">( Agrobacterium tumefaciens causes crown gall disease on a wide range of dicot (broad leaved) plants especially members of rose family by transferring its own DNA into plant cells. But in laboratory, the ability to move all sorts of genes into plants has made the microbe the standard tool for investigating plant genetics and modifying crops.</div>


tags: ['Biology', 'Biotechnology and Its Applications', 'AIIMS', 'AIIMS 2005']
source_db: MarksBatch1_P1.db
title:
assertion-agrobacterium-tumefaciens-is-popular-in-genetic-engineering-because-this-bacterium-is-associated-with-the-roots-of-all-cereal-and-pulse-crop

slug:
assertion-agrobacterium-tumefaciens-is-popular-in-genetic-engineering-because-this-bacterium-is-associated-with-the-roots-of-all-cereal-and-pulse-crop-14354

question:
<div class="question">Assertion : Agrobacterium tumefaciens is popular in genetic engineering because this bacterium is associated with the roots of all cereal and pulse crops.<br/>Reason : A gene incorporated in the bacterial chromosomal genome gets automatically transferred to the crop with which the bacterium is associated.</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">If both assertion and reason are true and reason is the correct explanation of assertion</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">If both assertion and reason are true but reason is not the correct explanation of assertion</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">If assertion is true but reason is false</span> </li><li class="correct"> <span class="option-label">D</span> <span class="option-data">If both assertion and reason are false.</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">If both assertion and reason are false.</span> </div>

answer:
<div class="solution">Agrobacterium tumefacines is a gram negative non sporing, motile, rod shaped bacterium, closely related to Rhizobium. It is found commonly on and around root surfaces. The region termed rhizosphere where it seems to survive by using nutrients that leak from the root tissues. But it infects only through the wound-site either naturally occurring or caused by transplanting of seedling and nursery stock. It is harmful to plants and useful to scientists for the same reason i.e. it transfers DNA into plant genomes found in soil worldwide. A. tumefaciens cause crown gall disease of a wide range of dicot (broad leaved) plants especially members of rose family by transferring its own DNA into plant cells. But in laboratory, the ability to move all sorts of genes into plants has made the microbe the standard tool for investigating plant genetics and modifying crops.</div>


tags: ['Chemistry', 'Biomolecules', 'AIIMS', 'AIIMS 2013']
source_db: MarksBatch1_P1.db
title:
assertion-all-enzymes-are-made-up-of-proteins-and-all-proteins-have-three-dimensional-structures-reason-secondary-structures-of-protein-are-sequence-o

slug:
assertion-all-enzymes-are-made-up-of-proteins-and-all-proteins-have-three-dimensional-structures-reason-secondary-structures-of-protein-are-sequence-o-65471

question:
<div class="question">Assertion : All enzymes are made up of proteins and all proteins have three dimensional structures.<br/>Reason : Secondary structures of protein are sequence of amino acids.</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">If both assertion and reason are true and reason is the correct explanation of assertion.</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">If both assertion and reason are true but reason is not the correct explanation of assertion.</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">If assertion is true but reason is false.</span> </li><li class="correct"> <span class="option-label">D</span> <span class="option-data">If both assertion and reason are false.</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">If both assertion and reason are false.</span> </div>

answer:
<div class="solution">(d) : All enzymes are made up of proteins and all proteins do not have 3-dimensional structures as proteins are classified into primary, secondary, tertiary and quaternary structures and only tertiary has 3-dimensional structure. The sequence in which the amino acids are arranged in a protein is called primary structure of protein.</div>


tags: ['Biology', 'Biomolecules (B)', 'AIIMS', 'AIIMS 2013']
source_db: MarksBatch1_P1.db
title:
assertion-all-proteinecous-enzymes-have-a-threedimensional-structure-reason-the-secondary-structure-of-protein-is-according-to-amino-acid-present-insi

slug:
assertion-all-proteinecous-enzymes-have-a-threedimensional-structure-reason-the-secondary-structure-of-protein-is-according-to-amino-acid-present-insi-78212

question:
<div class="question">Assertion : All proteinecous enzymes have a three-dimensional structure.<br/>Reason : The secondary structure of protein is according to amino acid present inside the polypeptides.</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">If both assertion and reason are true and reason is the correct explanation of assertion.</span> </li><li class="correct"> <span class="option-label">B</span> <span class="option-data">If both assertion and reason are true but reason is not the correct explanation of assertion.</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li><li class=""> <span class="option-label">C</span> <span class="option-data">If assertion is true but reason is false</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">If both assertion and reason are false</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">If both assertion and reason are true but reason is not the correct explanation of assertion.</span> </div>

answer:
<div class="solution">The secondary structure of proteins is the development of new stearic relationships of amino acids present in the linear sequence inside the polypeptides. Some of the new relationship are of regular nature and give periodicity to the structure. There are three types of secondary structures $-\alpha$-helix, $\beta$-pleated and collagen helix. They are held in a particular structure due hydrogen bonds between oxygen of carboxylic group (-CO group) of one amino acid residue and $&gt;\mathrm{NH}$ group of another amino acid. The protein enzymes have active sites which are capable of attracting and holding particular substrate molecules by is specific charge, size and shape so as to allow the chemical change. An active site consists of a few amino acids and their side groups which are brought together in a particular fashion due to secondary and tertiary folding of a protein molecule and its association with the cofactor, if any. Tertiary structure is bending and folding of various types to form spheres, rods or fibres. It further brings new stearic relationships of amino acids specially those which are far apart in the linear sequence. Tertiary structure is stabilized by several types of bonds - hydrogen bonds, ionic bonds, van der Waal's interactions, covalent bonds, hydrophobic bonds. Tertiary structure gives the protein a three dimensional conformation.</div>


tags: ['Biology', 'Anatomy of Flowering Plants', 'AIIMS', 'AIIMS 2019 (26 May)']
source_db: MarksBatch1_P1.db
title:
assertion-annual-rings-are-used-to-calculate-the-age-of-tree-reason-secondary-growth-is-not-found-in-bamboo

slug:
assertion-annual-rings-are-used-to-calculate-the-age-of-tree-reason-secondary-growth-is-not-found-in-bamboo-49120

question:
<div class="question">Assertion : Annual rings are used to calculate the age of tree.<br/>Reason : Secondary growth is not found in bamboo.</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">If both assertion and reason are true and reason is the correct explanation of assertion.</span> </li><li class="correct"> <span class="option-label">B</span> <span class="option-data">If both assertion and reason are true but reason is not the correct explanation of assertion.</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li><li class=""> <span class="option-label">C</span> <span class="option-data">If assertion is true but reason is false.</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">If both assertion and reason are false.</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">If both assertion and reason are true but reason is not the correct explanation of assertion.</span> </div>

answer:
<div class="solution">Each year the tree forms new cells (secondary growth) arranged in concentric circles called annual rings. These rings show amount of wood produced during one growing season. By counting the annual rings, the age of a tree can be determined. This phenomenon is called dendrochronology. Only plants showing secondary growth show annual rings. Bamboo is a monocot and hence secondary growth is absent in bamboo.</div>


tags: ['Biology', 'Animal Kingdom', 'AIIMS', 'AIIMS 2019 (25 May)']
source_db: MarksBatch1_P1.db
title:
assertion-anopheles-limulus-prawn-and-scorpion-are-arthropods-reason-all-have-jointed-appendages-and-chitinous-exoskeleton

slug:
assertion-anopheles-limulus-prawn-and-scorpion-are-arthropods-reason-all-have-jointed-appendages-and-chitinous-exoskeleton-40988

question:
<div class="question">Assertion : Anopheles, Limulus, prawn and scorpion are arthropods.<br/>Reason : All have jointed appendages and chitinous exoskeleton.</div>

options:
<ul class="options"> <li class="correct"> <span class="option-label">A</span> <span class="option-data">If both assertion and reason are true and reason is the correct explanation of assertion.</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li><li class=""> <span class="option-label">B</span> <span class="option-data">If both assertion and reason are true but reason is not the correct explanation of assertion.</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">If assertion is true but reason is false.</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">If both assertion and reason are false.</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">If both assertion and reason are true and reason is the correct explanation of assertion.</span> </div>

answer:
<div class="solution">Arthropods are the animals having chitinous exoskeleton and jointed appendages, e.g., Limulus, prawn, scorpion, Anopheles, etc.</div>


tags: ['Chemistry', 'Thermodynamics (C)']
source_db: MarksBatch1_P1.db
title:
assertion-combustion-of-all-organic-compounds-is-an-exothermic-reaction-reason-the-enthalpies-of-all-elements-in-their-standard-state-are-zero

slug:
assertion-combustion-of-all-organic-compounds-is-an-exothermic-reaction-reason-the-enthalpies-of-all-elements-in-their-standard-state-are-zero-85130

question:
<div class="question">Assertion : Combustion of all organic compounds is an exothermic reaction.<br/>Reason : The enthalpies of all elements in their standard state are zero.</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data"><br/>If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.<br/></span> </li><li class="correct"> <span class="option-label">B</span> <span class="option-data"><br/>If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.<br/></span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li><li class=""> <span class="option-label">C</span> <span class="option-data"><br/>If the Assertion is correct but Reason is incorrect.<br/></span> </li><li class=""> <span class="option-label">D</span> <span class="option-data"><br/>If the Assertion is incorrect but the Reason is correct.</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value"><br/>If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.<br/></span> </div>

answer:
<div class="solution">In combustion reaction, enthalpy of the reactants is always greater than the enthalpy of the product.</div>


tags: ['Chemistry', 'p Block Elements (Group 15, 16, 17 & 18)', 'AIIMS', 'AIIMS 2012']
source_db: MarksBatch1_P1.db
title:
assertion-fluorine-is-a-stronger-oxidizing-agent-than-iodine-reason-fluorine-has-greater-electronegativity-than-iodine

slug:
assertion-fluorine-is-a-stronger-oxidizing-agent-than-iodine-reason-fluorine-has-greater-electronegativity-than-iodine-40848

question:
<div class="question"><strong>Assertion :</strong> Fluorine is a stronger oxidizing agent than iodine.<strong>Reason :</strong> Fluorine has greater electronegativity than iodine.</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">If both assertion and reason are true and reason is the correct explanation of assertion</span> </li><li class="correct"> <span class="option-label">B</span> <span class="option-data">If both assertion and reason are true but reason is not the correct explanation of assertion</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li><li class=""> <span class="option-label">C</span> <span class="option-data">If assertion is true but reason is false</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">If both assertion and reason are false.</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">If both assertion and reason are true but reason is not the correct explanation of assertion</span> </div>

answer:
<div class="solution">Fluorine has higher standard electrode <br/>potential (reduction potential) than iodine.</div>


tags: ['Chemistry', 'Hydrocarbons', 'AIIMS', 'AIIMS 2018 (27 May)']
answer: <div class="solution">No Solution Available</div>
source_db: MarksBatch1_P1.db
title:
assertion-for-the-reaction-the-product-is-isopropyl-benzene-reason-this-is-due-to-rearrangement-of-primary-carbocation-into-secondary-carbocation

slug:
assertion-for-the-reaction-the-product-is-isopropyl-benzene-reason-this-is-due-to-rearrangement-of-primary-carbocation-into-secondary-carbocation-44247

question:
<div class="question">Assertion : For the reaction,<br/><img src="https://cdn-question-pool.getmarks.app/pyq/aiims/FmMdyHzwgHH9DwC_RM7eguVD9K0_rQU-yW495wyDgXQ.original.fullsize.png"/><br/><br/>the product is isopropyl benzene.<br/>Reason : This is due to rearrangement of primary carbocation into secondary carbocation.</div>

options:
<ul class="options"> <li class="correct"> <span class="option-label">A</span> <span class="option-data">If both assertion and reason are true and reason is the correct explanation of assertion.</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li><li class=""> <span class="option-label">B</span> <span class="option-data">If both assertion and reason are true but reason is not the correct explanation of assertion.</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">If assertion is true but reason is false.</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">If both assertion and reason are false.</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">If both assertion and reason are true and reason is the correct explanation of assertion.</span> </div>


title: assertion-glutamine-contains-amide-group-reason-isoelectric-point-of-glutamine-is-7
slug: assertion-glutamine-contains-amide-group-reason-isoelectric-point-of-glutamine-is-7-61588
tags: ['Chemistry', 'Biomolecules', 'AIIMS', 'AIIMS 2013']
source_db: MarksBatch1_P1.db
question:
<div class="question">Assertion : Glutamine contains amide group. <br/>Reason : Isoelectric point of glutamine is 7 .</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">If both assertion and reason are true and reason is the correct explanation of assertion.</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">If both assertion and reason are true but reason is not the correct explanation of assertion.</span> </li><li class="correct"> <span class="option-label">C</span> <span class="option-data">If assertion is true but reason is false</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li><li class=""> <span class="option-label">D</span> <span class="option-data">If both assertion and reason are false</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">If assertion is true but reason is false</span> </div>

answer:
<div class="solution">Glutamine is one of the 20 amino acids. Its side chain is an amide formed by replacing the side chain hydroxyl of glutamic acid with an amine functional group, making it the amide of glutamic acid. In human blood, glutamine is the most abundant free amino acid. The isoelectric point is the $\mathrm{pH}$ at which a particular molecule or surface carries no net electrical charge. The isoelectric point $(\mathrm{pH})$ of glutamine is 5.65.</div>


tags: ['Biology', 'Biotechnology and Its Applications', 'AIIMS', 'AIIMS 2014']
source_db: MarksBatch1_P1.db
title:
assertion-gm-crops-can-affect-human-health-by-causing-allergic-reactions-reason-transgenes-in-commercial-crops-can-endanger-native-species-eg-the-bt-t

slug:
assertion-gm-crops-can-affect-human-health-by-causing-allergic-reactions-reason-transgenes-in-commercial-crops-can-endanger-native-species-eg-the-bt-t-55389

question:
<div class="question">Assertion : GM crops can affect human health by causing allergic reactions.<br/>Reason: Transgenes in commercial crops can endanger native species e.g., the $B t$ toxin gene expressed in pollen might endanger pollinators like honeybees.</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">If both assertion and reason are true and reason is the correct explanation of assertion.</span> </li><li class="correct"> <span class="option-label">B</span> <span class="option-data">If both assertion and reason are true but reason is not the correct explanation of assertion.</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li><li class=""> <span class="option-label">C</span> <span class="option-data">If assertion is true but reason is false.</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">If both assertion and reason are false.</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">If both assertion and reason are true but reason is not the correct explanation of assertion.</span> </div>

answer:
<div class="solution">The transgenic food may cause toxicity or produce allergies. The enzyme produced by the antibiotic resistance can cause allergies, because it is a foreign protein. The introduction of transgenic plants into agriculture is creating some issues. One of them is the potential risk of transgene in commercial crops endangering native or nontarget species. For example the gene for Bt toxin expressed in pollen might endanger pollinators like honeybees.</div>


tags: ['Biology', 'Strategies for Enhancement in Food Production', 'AIIMS', 'AIIMS 2015']
source_db: MarksBatch1_P1.db
title:
assertion-gm-foods-are-facing-widespread-resistance-by-the-people-reason-gm-foods-have-mutated-genes-which-cause-infections-and-allergies

slug:
assertion-gm-foods-are-facing-widespread-resistance-by-the-people-reason-gm-foods-have-mutated-genes-which-cause-infections-and-allergies-13070

question:
<div class="question">Assertion : GM foods are facing widespread resistance by the people.<br/>Reason: GM foods have mutated genes which cause infections and allergies.</div>

options:
<ul class="options"> <li class="correct"> <span class="option-label">A</span> <span class="option-data">If both assertion and reason are true and reason is the correct explanation of assertion.</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li><li class=""> <span class="option-label">B</span> <span class="option-data">Ifboth assertion and reason are true but reason is not the correct explanation of assertion.</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">If assertion is true but reason is false.</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">If both assertion and reason are false.</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">If both assertion and reason are true and reason is the correct explanation of assertion.</span> </div>

answer:
<div class="solution">The GM crops are fast becoming a part of agriculture throughout the world because of their contribution to the increased crop productivity and to global food, feed and fiber security, besides their use in health-care and industry.<br/>However, GM foods are facing widespread resistance by the peoplefrom all over the world. It is because transgenes in commercial crops can endanger native species. For example, the gene for Bt toxin expressed in pollen might endanger pollinators like honeybees. These crops cause problems in human health by supplying allergens and transfer of antibiotic resistance markers. The GM crops may change the fundamental vegetable nature of plants as the genes from animals (e.g., fish or mouse) are being introduced into crop plants. GM foods also have a bad effect on environment and biodiversity.</div>


tags: ['Chemistry', 'Electrochemistry', 'AIIMS', 'AIIMS 2017']
answer: <div class="solution">Standard reduction potential of an electrode has a fixed value.</div>
source_db: MarksBatch1_P1.db
title:
assertion-if-standard-reduction-potential-for-the-reaction-ag-e-ag-is-080-volt-then-for-the-reaction-2-ag-2-e-2-ag-it-will-be-160-volt-reason-if-conce

slug:
assertion-if-standard-reduction-potential-for-the-reaction-ag-e-ag-is-080-volt-then-for-the-reaction-2-ag-2-e-2-ag-it-will-be-160-volt-reason-if-conce-81046

question:
<div class="question">Assertion : If standard reduction potential for the reaction $\mathrm{Ag}^{+}+e^{-} \rightarrow \mathrm{Ag}$ is 0.80 volt, then for the reaction $2 \mathrm{Ag}^{+}+2 e^{-} \rightarrow 2 \mathrm{Ag}$, it will be 1.60 volt.<br/>Reason: If concentration of $\mathrm{Ag}^{+}$ions is doubled, the standard electrode potential is also doubled.</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">If both assertion and reason are true and reason is the correct explanation of assertion.</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">If both assertion and reason are true but reason is not the correct explanation of assertion.</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">If assertion is true but reason is false.</span> </li><li class="correct"> <span class="option-label">D</span> <span class="option-data">If both assertion and reason are false.</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li> </ul>


tags: ['Biology', 'Ecosystem', 'AIIMS', 'AIIMS 2003']
source_db: MarksBatch1_P1.db
title:
assertion-in-a-food-chain-members-of-successive-higher-levels-are-fewer-in-number-reason-number-of-organisms-at-any-trophic-level-depends-upon-the-ava

slug:
assertion-in-a-food-chain-members-of-successive-higher-levels-are-fewer-in-number-reason-number-of-organisms-at-any-trophic-level-depends-upon-the-ava-82115

question:
<div class="question">Assertion : In a food chain members of successive higher levels are fewer in number.<br/>Reason : Number of organisms at any trophic level depends upon the availability of organisms which serve as food at the lower level.</div>

options:
<ul class="options"> <li class="correct"> <span class="option-label">A</span> <span class="option-data">If both Assertion and Reason are true and the reason is the correct explanation of the assertion</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li><li class=""> <span class="option-label">B</span> <span class="option-data">If both Assertion and Reason are true but the reason is not the correct explanation of the assertion</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">If Assertion is true statement but Reason is false</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">if both Assertion and Reason are false statements</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">If both Assertion and Reason are true and the reason is the correct explanation of the assertion</span> </div>

answer:
<div class="solution">In a food chain the number of animals and biomass at the lower trophic level is abundant.<br/>Successive links of carnivores decrease rapidly in number until there are very few carnivores at the top.</div>


tags: ['Physics', 'Waves and Sound', 'AIIMS', 'AIIMS 2018 (26 May)']
answer: <div class="solution">No Solution Available</div>
source_db: MarksBatch1_P1.db
title:
assertion-in-a-string-wave-during-reflection-from-fix-boundary-the-reflected-waves-is-inverted-reason-the-force-on-string-by-clmap-is-in-downward-dire

slug:
assertion-in-a-string-wave-during-reflection-from-fix-boundary-the-reflected-waves-is-inverted-reason-the-force-on-string-by-clmap-is-in-downward-dire-57340

question:
<div class="question">Assertion : In a string wave, during reflection from fix boundary, the reflected waves is inverted.<br/>Reason : The force on string by clmap is in downward direction while string is pulling the clamp in upward direction.</div>

options:
<ul class="options"> <li class="correct"> <span class="option-label">A</span> <span class="option-data">If both assertion and reason are true and reason is the correct explanation of assertion.</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li><li class=""> <span class="option-label">B</span> <span class="option-data">If both assertion and reason are true but reason is not the correct explanation of assertion.</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">If assertion is true but reason is false.</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">If both assertion and reason are false.</span> </li> </ul>


tags: ['Biology', 'Human Reproduction', 'AIIMS', 'AIIMS 2008']
source_db: MarksBatch1_P1.db
title:
assertion-in-mammals-the-female-secondary-sexual-characters-are-developed-by-gonadotropins-reason-gonadotropins-are-secreted-by-graafian-follicle

slug:
assertion-in-mammals-the-female-secondary-sexual-characters-are-developed-by-gonadotropins-reason-gonadotropins-are-secreted-by-graafian-follicle-77362

question:
<div class="question">Assertion : In mammals the female secondary sexual characters are developed by gonadotropins.<br/>Reason : Gonadotropins are secreted by graafian follicle.</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">If both assertion and reason are true and reason is the correct explanation of assertion</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">If both assertion and reason are true but reason is not the correct explanation of assertion</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">If assertion is true but reason is false</span> </li><li class="correct"> <span class="option-label">D</span> <span class="option-data">If both assertion and reason are false.</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li> </ul>

answer:
<div class="solution">The female secondary sexual characters are developed by estrogens. Estrogens are steroid hormones secreted by growing ovarian follicles. It includes estradiol, estriol and estrone. This hormone is responsible for the development of female secondary sexual and accessory characters. In humans it is also formed in the adrenal cortex, testis and foetoplacental unit. Gonadotrophic hormones (LH and FSH) are secreted by the anterior lobe of pituitary gland. $\mathrm{LH}$ is responsible for ovulation and transforms graafian follicle into corpus luteum and FSH stimulates spermatogenesis and maturation of graafian follicle and secretion of estrogen in ovaries.</div>


tags: ['Physics', 'Units and Dimensions', 'AIIMS', 'AIIMS 2008']
source_db: MarksBatch1_P1.db
title:
assertion-in-the-relation-ffrac12-l-sqrtfractmu-where-symbols-have-standard-meaning-mu-represent-linear-mass-density-reason-the-frequency-has-the-dime

slug:
assertion-in-the-relation-ffrac12-l-sqrtfractmu-where-symbols-have-standard-meaning-mu-represent-linear-mass-density-reason-the-frequency-has-the-dime-56410

question:
<div class="question">Assertion: In the relation \(f=\frac{1}{2 l} \sqrt{\frac{T}{\mu}}\), where symbols have standard meaning, \(\mu\) represent linear mass density.<br/>Reason : The frequency has the dimensions of inverse of time.</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">If both assertion and reason are true and reason is the correct explanation of assertion</span> </li><li class="correct"> <span class="option-label">B</span> <span class="option-data">If both assertion and reason are true but reason is not the correct explanation of assertion</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li><li class=""> <span class="option-label">C</span> <span class="option-data">If assertion is true but reason is false</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">If both assertion and reason are false.</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">If both assertion and reason are true but reason is not the correct explanation of assertion</span> </div>

answer:
<div class="solution">From, $f=\frac{1}{2 l} \sqrt{\frac{T}{\mu}}, f^2=\frac{T}{4 l^2 \mu}$<br/>or, $\begin{aligned} \mu &amp; =\frac{T}{4 l^2 f^2}=\frac{\left[\mathrm{MLT}^{-2}\right]}{\mathrm{L}^2 \mathrm{~T}^{-2}}=\frac{\mathrm{M}}{\mathrm{L}} \\ &amp; =\frac{\text { Mass }}{\text { length }}=\text { linear mass density. }\end{aligned}$</div>


tags: ['Biology', 'Ecosystem', 'AIIMS', 'AIIMS 2006']
source_db: MarksBatch1_P1.db
title:
assertion-in-tropical-rain-forests-ohorizon-and-ahorizon-of-soil-profile-are-shallow-and-nutrientpoor-reason-excessive-growth-of-microorganisms-in-the

slug:
assertion-in-tropical-rain-forests-ohorizon-and-ahorizon-of-soil-profile-are-shallow-and-nutrientpoor-reason-excessive-growth-of-microorganisms-in-the-88347

question:
<div class="question">Assertion : In tropical rain forests, O-horizon and A-horizon of soil profile are shallow and nutrient-poor.<br/>Reason : Excessive growth of micro-organisms in the soil depletes its organic content.</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">If both assertion and reason are true and reason is the correct explanation of the assertion</span> </li><li class="correct"> <span class="option-label">B</span> <span class="option-data">If both assertion and reason are true but reason is not the correct explanation of the assertion</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li><li class=""> <span class="option-label">C</span> <span class="option-data">If assertion is true, but reason is false</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">Both assertion and reason are false statements.</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">If both assertion and reason are true but reason is not the correct explanation of the assertion</span> </div>

answer:
<div class="solution">A cross section of well developed soil shows more or less distinct layers called horizons. Ohorizon is the topmost layer of soil and A-horizon comes below O horizon. In the topmost layer, vegetation grows and various biological activities takes place. Tropical rain forests are found in tropical zone of the world and are characterized by very high temperature and abundance of rainfall. Soil in these area are red latosols and are exceedingly thick. Leaching of minerals from the top soil occurs rapidly but cycling of nutrients also occur here. The laterite soils are generally infertile because of intensive leaching and not due to growth of micro-organism.</div>


