# questions

tags: ['Chemistry', 'Coordination Compounds', 'NEET']
source_db: MarksBatch2_P4.db
title:
what-term-is-used-for-the-atomion-to-which-a-fixed-number-of-ionsgroups-are-bound-in-a-coordination-entity

slug:
what-term-is-used-for-the-atomion-to-which-a-fixed-number-of-ionsgroups-are-bound-in-a-coordination-entity-42789

question:
<div class="question">What term is used for the atom/ion to which a fixed number of ions/groups are bound in a coordination entity?</div>

options:
<ul class="options"> <li class="correct"> <span class="option-label">A</span> <span class="option-data">Central atom/ion</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 valence</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">Counter ion</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">Lewis base</span> </li> </ul>

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

answer:
<div class="solution">The atom/ion to which a fixed number of ions/groups are bound in a coordination entity is called the central atom/ion.</div>


tags: ['Chemistry', 'Haloalkanes and Haloarenes', 'NEET']
source_db: MarksBatch2_P4.db
title:
what-term-is-used-to-describe-the-spatial-arrangement-of-atoms-in-the-molecules-of-two-types-of-crystals-according-to-louis-pasteur

slug:
what-term-is-used-to-describe-the-spatial-arrangement-of-atoms-in-the-molecules-of-two-types-of-crystals-according-to-louis-pasteur-51282

question:
<div class="question">What term is used to describe the spatial arrangement of atoms in the molecules of two types of crystals, according to Louis Pasteur?</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">Isomerism</span> </li><li class="correct"> <span class="option-label">B</span> <span class="option-data">Stereochemistry</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">Conformation</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">Racemism</span> </li> </ul>

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

answer:
<div class="solution">Louis Pasteur described the spatial arrangement of atoms in the molecules of two types of crystals as a foundation of modern stereochemistry.</div>


title: what-type-of-alcohol-is-produced-when-methanal-formaldehyde-reacts-with-a-grignard-reagent
slug: what-type-of-alcohol-is-produced-when-methanal-formaldehyde-reacts-with-a-grignard-reagent-63935
tags: ['Chemistry', 'Alcohols Phenols and Ethers', 'NEET']
answer: <div class="solution">Methanal reacts to produce a primary alcohol.</div>
source_db: MarksBatch2_P4.db
question:
<div class="question">What type of alcohol is produced when methanal (formaldehyde) reacts with a Grignard reagent?</div>

options:
<ul class="options"> <li class="correct"> <span class="option-label">A</span> <span class="option-data">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">B</span> <span class="option-data">Secondary alcohol</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">Tertiary alcohol</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">Quaternary alcohol</span> </li> </ul>


title: what-type-of-amines-can-be-prepared-using-gabriel-synthesis
slug: what-type-of-amines-can-be-prepared-using-gabriel-synthesis-56917
question: <div class="question">What type of amines can be prepared using Gabriel synthesis?</div>
tags: ['Chemistry', 'Amines', 'NEET']
source_db: MarksBatch2_P4.db
options:
<ul class="options"> <li class="correct"> <span class="option-label">A</span> <span class="option-data">Primary amines</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 amines</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">Tertiary amines</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">Quaternary ammonium salts</span> </li> </ul>

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

answer:
<div class="solution">Gabriel synthesis is primarily used for the preparation of primary amines.</div>


title: what-type-of-appendages-do-aquatic-annelids-like-nereis-possess-to-help-in-swimming
slug: what-type-of-appendages-do-aquatic-annelids-like-nereis-possess-to-help-in-swimming-21827
tags: ['Biology', 'Animal Kingdom', 'NEET']
source_db: MarksBatch2_P4.db
question:
<div class="question">What type of appendages do aquatic annelids like Nereis possess to help in swimming?</div>

options:
<ul class="options"> <li class="correct"> <span class="option-label">A</span> <span class="option-data">parapodia</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">tentacle</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">gills</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">fins</span> </li> </ul>

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

answer:
<div class="solution">Aquatic annelids like Nereis possess lateral appendages called parapodia, which help in swimming.</div>


tags: ['Biology', 'Ecosystem', 'NEET', 'NEET 2018']
source_db: MarksBatch2_P4.db
title:
what-type-of-ecological-pyramid-would-be-obtained-with-following-data-secondary-consumer-120-g-primary-consumer-60-g-primary-producer-10-g

slug:
what-type-of-ecological-pyramid-would-be-obtained-with-following-data-secondary-consumer-120-g-primary-consumer-60-g-primary-producer-10-g-51820

question:
<div class="question">What type of ecological pyramid would be obtained with following data?<br/>Secondary consumer : 120 g<br/>Primary consumer : 60 g<br/>Primary producer : 10 g</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">Upright pyramid of numbers</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">Pyramid of energy</span> </li><li class="correct"> <span class="option-label">C</span> <span class="option-data">Inverted pyramid of biomass</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">Upright pyramid of biomass</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">Inverted pyramid of biomass</span> </div>

answer:
<div class="solution"><blockquote><p>The inverted pyramid of biomass<br/><img alt="" src="https://cdn-question-pool.getmarks.app/pyq/neet/pyramid__2_.png" style="width: 600px; height: 250px;"/><br/>Biomass is the amount of living material in an organism. The pyramids of biomass represent the relationship between different trophic levels in terms of biomass. In grassland and forest ecosystems, there is generally a gradual decrease in the biomass of organisms at successive trophic levels from the producers to the consumers. Their pyramid of biomass is upright. In an aquatic ecosystem, the producers are small organisms with the least biomass and the biomass gradually increase towards the apex of the pyramid. Thus, the pyramid of the biomass of aquatic ecosystems is inverted in shape.</p></blockquote></div>


title: what-type-of-immunity-is-provided-to-the-newborn-infant-through-mothers-milk
slug: what-type-of-immunity-is-provided-to-the-newborn-infant-through-mothers-milk-82090
tags: ['Biology', 'Human Health and Diseases', 'NEET']
source_db: MarksBatch2_P4.db
question:
<div class="question">What type of immunity is provided to the newborn infant through motherâs milk?</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">Active immunity</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">Cell-mediated immunity</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">Humoral immune response</span> </li><li class="correct"> <span class="option-label">D</span> <span class="option-data">Passive immunity</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">Passive immunity</span> </div>

answer:
<div class="solution">Motherâs milk contains abundant antibodies (IgA) and provides passive immunity to the newborn infant.</div>


title: what-type-of-ligand-has-several-donor-atoms-in-a-single-molecule
slug: what-type-of-ligand-has-several-donor-atoms-in-a-single-molecule-78491
question: <div class="question">What type of ligand has several donor atoms in a single molecule?</div>
tags: ['Chemistry', 'Coordination Compounds', 'NEET']
answer: <div class="solution">Polydentate ligands have several donor atoms in a single molecule.</div>
source_db: MarksBatch2_P4.db
options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">Unidentate</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">Didendate</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">Hexadentate</span> </li><li class="correct"> <span class="option-label">D</span> <span class="option-data">Polydentate</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">Polydentate</span> </div>


title: what-type-of-ligand-is-ethane12diamine
slug: what-type-of-ligand-is-ethane12diamine-64567
question: <div class="question">What type of ligand is ethane-1,2-diamine?</div>
tags: ['Chemistry', 'Coordination Compounds', 'NEET']
source_db: MarksBatch2_P4.db
options:
<ul class="options"> <li class="correct"> <span class="option-label">A</span> <span class="option-data">Didendate</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">Polydentate</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">Hexadentate</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">Unidentate</span> </li> </ul>

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

answer:
<div class="solution">Ethane-1,2-diamine is a didendate ligand because it can bind through two donor atoms.</div>


title: what-type-of-ligand-is-ethylenediaminetetraacetate-ion-edta4
slug: what-type-of-ligand-is-ethylenediaminetetraacetate-ion-edta4-70283
question: <div class="question">What type of ligand is ethylenediaminetetraacetate ion (EDTA4â)?</div>
tags: ['Chemistry', 'Coordination Compounds', 'NEET']
source_db: MarksBatch2_P4.db
options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">Didendate</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">Polydentate</span> </li><li class="correct"> <span class="option-label">C</span> <span class="option-data">Hexadentate</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">Unidentate</span> </li> </ul>

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

answer:
<div class="solution">EDTA4â is a hexadentate ligand because it can bind through multiple donor atoms, including two nitrogen and four oxygen atoms.</div>


title: what-type-of-molecular-orbitals-are-not-symmetrical-around-the-bondaxis-in-the-sigmapi-nomenclature
tags: ['Chemistry', 'Chemical Bonding and Molecular Structure', 'NEET']
source_db: MarksBatch2_P4.db
slug:
what-type-of-molecular-orbitals-are-not-symmetrical-around-the-bondaxis-in-the-sigmapi-nomenclature-15580

question:
<div class="question">What type of molecular orbitals are not symmetrical around the bond-axis in the sigma-pi nomenclature?</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">Sigma (Ï) molecular orbitals</span> </li><li class="correct"> <span class="option-label">B</span> <span class="option-data">Pi (Ï) molecular orbitals</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">Delta (Î) molecular orbitals</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">Gamma (Î³) molecular orbitals</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">Pi (Ï) molecular orbitals</span> </div>

answer:
<div class="solution">Pi (Ï) molecular orbitals are not symmetrical around the bond-axis in the sigma-pi nomenclature.</div>


title: what-type-of-molecular-orbitals-are-symmetrical-around-the-bondaxis-in-the-sigmapi-nomenclature
tags: ['Chemistry', 'Chemical Bonding and Molecular Structure', 'NEET']
source_db: MarksBatch2_P4.db
slug:
what-type-of-molecular-orbitals-are-symmetrical-around-the-bondaxis-in-the-sigmapi-nomenclature-59313

question:
<div class="question">What type of molecular orbitals are symmetrical around the bond-axis in the sigma-pi nomenclature?</div>

options:
<ul class="options"> <li class="correct"> <span class="option-label">A</span> <span class="option-data">Sigma (Ï) molecular orbitals</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">Pi (Ï) molecular orbitals</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">Delta (Î) molecular orbitals</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">Gamma (Î³) molecular orbitals</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">Sigma (Ï) molecular orbitals</span> </div>

answer:
<div class="solution">In the sigma-pi nomenclature, sigma (Ï) molecular orbitals are symmetrical around the bond-axis.</div>


title: what-type-of-reactions-are-reverse-reactions
slug: what-type-of-reactions-are-reverse-reactions-25046
question: <div class="question">What type of reactions are reverse reactions?</div>
tags: ['Chemistry', 'Chemical Kinetics', 'NEET']
source_db: MarksBatch2_P4.db
options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">Reactions that are unrelated to the main reaction.</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">Reactions that occur simultaneously with the main reaction.</span> </li><li class="correct"> <span class="option-label">C</span> <span class="option-data">Reactions that occur in the reverse order of the main reaction.</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">Reactions that involve secondary reactants.</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">Reactions that occur in the reverse order of the main reaction.</span> </div>

answer:
<div class="solution">Reverse reactions are reactions that occur in the reverse order of the main reaction, often involving the conversion of products back to reactants.</div>


title: what-type-of-sulphonamide-is-formed-in-the-reaction-with-a-secondary-amine
slug: what-type-of-sulphonamide-is-formed-in-the-reaction-with-a-secondary-amine-99315
tags: ['Chemistry', 'Amines', 'NEET']
source_db: MarksBatch2_P4.db
question:
<div class="question">What type of sulphonamide is formed in the reaction with a secondary amine?</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">N-ethyl benzene sulfonyl amide</span> </li><li class="correct"> <span class="option-label">B</span> <span class="option-data">N,N-diethyl benzene sulphonamide</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">N-methylbenzenesulphonyl amide</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">N,N-dimethyl benzenesulfonamide</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">N,N-diethyl benzene sulphonamide</span> </div>

answer:
<div class="solution">The reaction of benzenesulfonyl chloride with a secondary amine yields N,N-diethyl benzene sulphonamide.</div>


tags: ['Chemistry', 'Some Basic Concepts of Chemistry', 'NEET']
source_db: MarksBatch2_P4.db
title:
what-volume-of-o-2-measured-at-standard-conditions-will-be-formed-by-the-action-of-100-ml-of-05-k-m-n-o-4-on-hydrogen-peroxide-in-an-acidic-solution

slug:
what-volume-of-o-2-measured-at-standard-conditions-will-be-formed-by-the-action-of-100-ml-of-05-k-m-n-o-4-on-hydrogen-peroxide-in-an-acidic-solution-82160

question:
<div class="question">What volume of <math><msub><mrow><mi mathvariant="normal">O</mi></mrow><mrow><mn>2</mn></mrow></msub></math> measured at standard conditions will be formed by the action of 100 mL of 0.5 <math><mi mathvariant="normal">K</mi><mi mathvariant="normal">M</mi><mi mathvariant="normal">n</mi><msub><mrow><mi mathvariant="normal">O</mi></mrow><mrow><mn>4</mn></mrow></msub></math> on hydrogen peroxide in an acidic solution?</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">0.12 litre</span> </li><li class="correct"> <span class="option-label">B</span> <span class="option-data">0.28 litre</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">0.56 litre</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">1.12 litre</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">0.28 litre</span> </div>

answer:
<div class="solution">Here <math><msub><mrow><mi mathvariant="normal">H</mi></mrow><mrow><mn>2</mn></mrow></msub><msub><mrow><mi mathvariant="normal">O</mi></mrow><mrow><mn>2</mn></mrow></msub></math> on reaction with <math><mi mathvariant="normal">K</mi><mi mathvariant="normal">M</mi><mi mathvariant="normal">n</mi><msub><mrow><mi mathvariant="normal">O</mi></mrow><mrow><mn>4</mn></mrow></msub></math> gives <math><msub><mrow><mi mathvariant="normal">O</mi></mrow><mrow><mn>2</mn></mrow></msub></math> so<br/>Meq. of <math><msub><mrow><mi mathvariant="normal">O</mi></mrow><mrow><mn>2</mn></mrow></msub><mo>=</mo><mi mathvariant="normal">M</mi><mi mathvariant="normal">e</mi><mi mathvariant="normal">q</mi></math> of <math><mi mathvariant="normal">K</mi><mi mathvariant="normal">M</mi><mi mathvariant="normal">n</mi><msub><mrow><mi mathvariant="normal">O</mi></mrow><mrow><mn>4</mn></mrow></msub><mo>=</mo><mn>100</mn><mo>Ã</mo><mn>0.5</mn></math><br/><math><mfrac><mrow><mi mathvariant="normal">w</mi></mrow><mrow><mn>8</mn></mrow></mfrac><mo>Ã</mo><mn>1000</mn><mo>=</mo><mn>50</mn></math> (equivalent weight of oxygen is 8)<br/>So <math><msub><mrow><mi mathvariant="normal">w</mi></mrow><mrow><msub><mrow><mi mathvariant="normal">O</mi></mrow><mrow><mn>2</mn></mrow></msub></mrow></msub><mo>=</mo><mn>0.4</mn></math> g<br/>So <math><msub><mrow><mi mathvariant="normal">V</mi></mrow><mrow><msub><mrow><mi mathvariant="normal">O</mi></mrow><mrow><mn>2</mn></mrow></msub></mrow></msub><mo>=</mo><mfrac><mrow><mn>22.4</mn><mo>Ã</mo><mn>0.4</mn></mrow><mrow><mn>32</mn></mrow></mfrac><mo>=</mo><mn>0.28</mn></math> litre.</div>


title: what-was-panchanan-maheshwaris-contribution-to-school-education
slug: what-was-panchanan-maheshwaris-contribution-to-school-education-88331
question: <div class="question">What was Panchanan Maheshwari's contribution to school education?</div>
tags: ['Biology', 'Reproduction in Organisms', 'NEET']
source_db: MarksBatch2_P4.db
options:
<ul class="options"> <li class="correct"> <span class="option-label">A</span> <span class="option-data">He published the first textbooks of Biology for Higher Secondary Schools</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">He encouraged students to study in general education</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">He taught at Higher Secondary Schools</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">He established schools in rural areas</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">He published the first textbooks of Biology for Higher Secondary Schools</span> </div>

answer:
<div class="solution">Panchanan made a significant contribution to school education by his leadership in bringing out the very first textbooks of Biology for Higher Secondary Schools published by NCERT in 1964.</div>


tags: ['Chemistry', 'Electrochemistry', 'JEE Main']
correct_option: <div class="correct-answer"> The correct answer is: <span class="option-value">0.34 V</span> </div>
source_db: MarksBatch2_P4.db
title:
what-will-be-standard-cell-potential-of-galvanic-cell-with-the-following-reaction-2cr-s-3cd-aq-2-2cr-aq-3-3cd-s-given-e-c-r-3-c-r-o-074-v-and-e-c-d-2-

slug:
what-will-be-standard-cell-potential-of-galvanic-cell-with-the-following-reaction-2cr-s-3cd-aq-2-2cr-aq-3-3cd-s-given-e-c-r-3-c-r-o-074-v-and-e-c-d-2-38210

question:
<div class="question">What will be standard cell potential of galvanic cell with the following reaction?<br/> <br/> <math> <mrow> <msub> <mrow> <mtext>2Cr</mtext></mrow> <mrow> <mfenced> <mtext>s</mtext> </mfenced></mrow> </msub> <mtext>â</mtext><mtext>+</mtext><mtext>â</mtext><msubsup> <mrow> <mtext>3Cd</mtext></mrow> <mrow> <mfenced> <mrow> <mtext>aq</mtext></mrow> </mfenced></mrow> <mrow> <mtext>2+</mtext></mrow> </msubsup> <mo>â</mo><msubsup> <mrow> <mtext>2Cr</mtext></mrow> <mrow> <mfenced> <mrow> <mtext>aq</mtext></mrow> </mfenced></mrow> <mrow> <mtext>3+</mtext></mrow> </msubsup> <mtext>â</mtext><mtext>+</mtext><mtext>â</mtext><msub> <mrow> <mtext>3Cd</mtext></mrow> <mrow> <mfenced> <mtext>s</mtext> </mfenced></mrow> </msub> </mrow> </math><br/> <br/>
[Given: <math><msubsup><mrow><mi mathvariant="normal">E</mi></mrow><mrow><mrow><mrow><mi mathvariant="normal">C</mi><msup><mrow><mi mathvariant="normal">r</mi></mrow><mrow><mn>3</mn><mo>+</mo></mrow></msup></mrow><mo>/</mo><mrow><mi mathvariant="normal">C</mi><mi mathvariant="normal">r</mi></mrow></mrow></mrow><mrow><mi mathvariant="normal">o</mi></mrow></msubsup><mo>=</mo><mo>-</mo><mn>0.74</mn><mi mathvariant="normal">V</mi></math> and <math><msubsup><mrow><mi mathvariant="normal">E</mi></mrow><mrow><mrow><mrow><mi mathvariant="normal">C</mi><msup><mrow><mi mathvariant="normal">d</mi></mrow><mrow><mn>2</mn><mo>+</mo></mrow></msup></mrow><mo>/</mo><mrow><mi mathvariant="normal">C</mi><mi mathvariant="normal">d</mi></mrow></mrow></mrow><mrow><mi mathvariant="normal">o</mi></mrow></msubsup><mo>=</mo><mo>-</mo><mn>0.40</mn><mi mathvariant="normal">V</mi></math> ]</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">0.74 V</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">1.14 V</span> </li><li class="correct"> <span class="option-label">C</span> <span class="option-data">0.34 V</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">-0.34 V</span> </li> </ul>

answer:
<div class="solution"><math><msubsup><mrow><mi mathvariant="normal">E</mi></mrow><mrow><mi mathvariant="normal">c</mi><mi mathvariant="normal">e</mi><mi mathvariant="normal">l</mi><mi mathvariant="normal">l</mi></mrow><mrow><mi mathvariant="normal">o</mi></mrow></msubsup><mo>=</mo><msubsup><mrow><mi mathvariant="normal">E</mi></mrow><mrow><mi mathvariant="normal">c</mi><mi mathvariant="normal">a</mi><mi mathvariant="normal">t</mi><mi mathvariant="normal">h</mi><mi mathvariant="normal">o</mi><mi mathvariant="normal">d</mi><mi mathvariant="normal">e</mi></mrow><mrow><mi mathvariant="normal">o</mi></mrow></msubsup><mo>-</mo><msubsup><mrow><mi mathvariant="normal">E</mi></mrow><mrow><mi mathvariant="normal">a</mi><mi mathvariant="normal">n</mi><mi mathvariant="normal">o</mi><mi mathvariant="normal">d</mi><mi mathvariant="normal">e</mi></mrow><mrow><mi mathvariant="normal">o</mi></mrow></msubsup></math><br/><math> <mrow> <msubsup> <mtext>E</mtext> <mrow> <mtext>cell</mtext></mrow> <mtext>o</mtext> </msubsup> <mtext>â</mtext><mtext>=</mtext><mtext>â</mtext><msubsup> <mtext>E</mtext> <mrow> <msup> <mrow> <mtext>Cd</mtext></mrow> <mrow> <mtext>2+</mtext></mrow> </msup> <mtext>/Cd</mtext></mrow> <mtext>o</mtext> </msubsup> <mo>â</mo><msubsup> <mtext>E</mtext> <mrow> <msup> <mrow> <mtext>Cr</mtext></mrow> <mrow> <mtext>3+</mtext></mrow> </msup> <mtext>/Cr</mtext></mrow> <mtext>o</mtext> </msubsup> </mrow> </math><br/><math> <mrow> <mo>=</mo><mo>â</mo><mn>0.40</mn><mo>â</mo><mfenced> <mrow> <mn>0.74</mn></mrow> </mfenced><mo>=</mo><mo>+</mo><mn>0.34</mn><mtext>â</mtext><mtext>V</mtext></mrow> </math></div>


tags: ['Chemistry', 'Electrochemistry', 'COMEDK', 'COMEDK 2022']
source_db: MarksBatch2_P4.db
title:
what-will-be-the-emf-of-the-following-cell-at-2-5-c-fe-fe-2-0001-m-h-001-m-h-2-g-1-bar-pt-s-e-fe-2-fe-044-v-e-h-h-2-000-v

slug:
what-will-be-the-emf-of-the-following-cell-at-2-5-c-fe-fe-2-0001-m-h-001-m-h-2-g-1-bar-pt-s-e-fe-2-fe-044-v-e-h-h-2-000-v-12385

question:
<div class="question">What will be the emf of the following cell at $25^{\circ} \mathrm{C}$ ?<br/>$\mathrm{Fe} / \mathrm{Fe}^{2+}(0.001 \mathrm{M})|| \mathrm{H}^{+}(0.01 \mathrm{M}) \mid \mathrm{H}_2(\mathrm{~g})$<br/>(1 Bar) $\mid \mathrm{Pt}(s)$<br/>$E_{\left(\mathrm{Fe}^{2+} / \mathrm{Fe}\right)}^{\circ}=-0.44 \mathrm{~V} ; E_{\left(\mathrm{H}^{+} / \mathrm{H}_2\right)}^{\circ}=0.00 \mathrm{~V}$</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">$0.44 \mathrm{~V}$</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">$-0.44 \mathrm{~V}$</span> </li><li class="correct"> <span class="option-label">C</span> <span class="option-data">$0.41 \mathrm{~V}$</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">$-0.41 \mathrm{~V}$</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">$0.41 \mathrm{~V}$</span> </div>

answer:
<div class="solution">For the given cell representation, the cell reaction will be,<br/>$$<br/>\mathrm{Fe}(s)+2 \mathrm{H}^{+}(a q) \longrightarrow \mathrm{Fe}^{2+}(a q)+\mathrm{H}_2(g)<br/>$$<br/>The standard emf of the cell will be,<br/>$$<br/>\begin{aligned}<br/>E_{\text {cell }}^{\circ} &amp; =E_{\mathrm{H}^{+} / \mathrm{H}_2}^{\circ}-E_{\mathrm{Fe}^{2+} / \mathrm{Fe}}^{\circ} \\<br/>&amp; =0-(-0.44)=0.44 \mathrm{~V}<br/>\end{aligned}<br/>$$<br/>The Nernst equation for the cell reaction at $25^{\circ} \mathrm{C}$,<br/>$$<br/>E_{\text {cell }}=E_{\text {cell }}^a-\frac{0.0591}{n} \log \frac{\left[\mathrm{Fe}^{2+}\right]}{\left[\mathrm{H}^{+}\right]}<br/>$$<br/><br/>$$<br/>\begin{aligned}<br/>&amp; =0.44-\frac{0.0591}{2} \log \frac{[0.001]}{[0.01]^2} \\<br/>&amp; =0.44-0.02955(\log 10) \\<br/>&amp; =0.44-0.02955(1) \\<br/>&amp; =0.41045 \mathrm{~V}=0.41 \mathrm{~V}<br/>\end{aligned}<br/>$$</div>


tags: ['Chemistry', 'Coordination Compounds', 'JEE Main']
source_db: MarksBatch2_P4.db
title:
what-will-be-the-primary-valency-of-cobalt-in-the-complex-leftmathrmcoleftmathrmnh3right5-mathrmclright-mathrmcl2-according-to-werners-theory

slug:
what-will-be-the-primary-valency-of-cobalt-in-the-complex-leftmathrmcoleftmathrmnh3right5-mathrmclright-mathrmcl2-according-to-werners-theory-51582

question:
<div class="question">What will be the primary valency of cobalt in the complex \( \left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{5} \mathrm{Cl}\right] \mathrm{Cl}_{2} \), according to Werner's theory?</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">\( 5 \)</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">\( 1 \)</span> </li><li class="correct"> <span class="option-label">C</span> <span class="option-data">\( 3 \)</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">\( 2 \)</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">\( 3 \)</span> </div>

answer:
<div class="solution">Negative ions satisfy the primary valencies in the given complex. Primary valency represent the oxidation state of central metal ion and in this oxidation state is <math xmlns="http://www.w3.org/1998/Math/MathML"><mo>+</mo><mn>3</mn></math>, so primary valency is <math xmlns="http://www.w3.org/1998/Math/MathML"><mn>3</mn></math>. Out of three chloride ion, two chloride ions are of dual nature i.e. shows both primary and secondary whereas one chloride ion shows only primary.<br/> </div>


tags: ['Chemistry', 'Electrochemistry', 'JEE Main', 'JEE Main 2020 (08 Jan Shift 1)']
options: None
correct_option: <div class="correct-answer"> The correct answer is: <span class="option-value">0.93</span> </div>
source_db: MarksBatch2_P4.db
title:
what-would-be-the-electrode-potential-for-the-given-halfcell-reaction-at-p-h-5-2-h-2-o-o-2-4-h-4-e-e-r-e-d-0-123-v-r-8314-j-m-o-l-1-k-1-t-e-m-p-298-k-

slug:
what-would-be-the-electrode-potential-for-the-given-halfcell-reaction-at-p-h-5-2-h-2-o-o-2-4-h-4-e-e-r-e-d-0-123-v-r-8314-j-m-o-l-1-k-1-t-e-m-p-298-k-70318

question:
<div class="question">What would be the electrode potential for the given half-cell reaction at <math><mi mathvariant="normal">p</mi><mi mathvariant="normal">H</mi><mo>=</mo><mn>5</mn><mo>?</mo><mi></mi><mo>_</mo><mo>_</mo><mo>_</mo><mo>_</mo><mo>_</mo><mo>_</mo><mo>_</mo><mo>_</mo><mo>_</mo><mo>.</mo></math><br/><math><mn>2</mn><msub><mrow><mi mathvariant="normal">H</mi></mrow><mrow><mn>2</mn></mrow></msub><mi mathvariant="normal">O</mi><mo>→</mo><msub><mrow><mi mathvariant="normal">O</mi></mrow><mrow><mn>2</mn></mrow></msub><mo>+</mo><mn>4</mn><mover><mrow><mtext>H</mtext></mrow><mrow><mo>⊕</mo></mrow></mover><mo>+</mo><mn>4</mn><msup><mrow><mi mathvariant="normal">e</mi></mrow><mrow><mo>-</mo></mrow></msup><mo>;</mo><msubsup><mrow><mi mathvariant="normal">E</mi></mrow><mrow><mi mathvariant="normal">r</mi><mi mathvariant="normal">e</mi><mi mathvariant="normal">d</mi></mrow><mrow><mn>0</mn></mrow></msubsup><mo>=</mo><mn>1.23</mn><mi mathvariant="normal"></mi><mi mathvariant="normal">V</mi></math><br/><math><mfenced separators="|"><mrow><mi mathvariant="normal">R</mi><mo>=</mo><mn>8.314</mn><mi mathvariant="normal"></mi><mi mathvariant="normal">J</mi><mi mathvariant="normal"></mi><msup><mrow><mi mathvariant="normal">m</mi><mi mathvariant="normal">o</mi><mi mathvariant="normal">l</mi></mrow><mrow><mo>-</mo><mn>1</mn></mrow></msup><msup><mrow><mi mathvariant="normal">K</mi></mrow><mrow><mo>-</mo><mn>1</mn></mrow></msup><mo>;</mo><mi mathvariant="normal">T</mi><mi mathvariant="normal">e</mi><mi mathvariant="normal">m</mi><mi mathvariant="normal">p</mi><mo>=</mo><mn>298</mn><mi mathvariant="normal"></mi><mi mathvariant="normal">K</mi><mo>;</mo><mi mathvariant="normal">o</mi><mi mathvariant="normal">x</mi><mi mathvariant="normal">y</mi><mi mathvariant="normal">g</mi><mi mathvariant="normal">e</mi><mi mathvariant="normal">n </mi><mi mathvariant="normal"></mi><mi mathvariant="normal">u</mi><mi mathvariant="normal">n</mi><mi mathvariant="normal">d</mi><mi mathvariant="normal">e</mi><mi mathvariant="normal">r </mi><mi mathvariant="normal"></mi><mi mathvariant="normal">s</mi><mi mathvariant="normal">tan</mi><mi mathvariant="normal">dard </mi><mo>.</mo><mi mathvariant="normal"></mi><mi mathvariant="normal">a</mi><mi mathvariant="normal">t</mi><mi mathvariant="normal">m</mi><mo>.</mo><mi mathvariant="normal"></mi><mi mathvariant="normal">p</mi><mi mathvariant="normal">r</mi><mi mathvariant="normal">e</mi><mi mathvariant="normal">s</mi><mi mathvariant="normal">s</mi><mi mathvariant="normal">u</mi><mi mathvariant="normal">r</mi><mi mathvariant="normal">e</mi><mi mathvariant="normal"></mi><mi mathvariant="normal">o</mi><mi mathvariant="normal">f</mi><mi mathvariant="normal"></mi><mn>1</mn><mi mathvariant="normal"></mi><mi mathvariant="normal">b</mi><mi mathvariant="normal">a</mi><mi mathvariant="normal">r</mi></mrow></mfenced></math></div>

answer:
<div class="solution"><p>On applyinf Nernst equation-</p><p><math xmlns="http://www.w3.org/1998/Math/MathML"><mi mathvariant="normal">E</mi><mo>=</mo><mi mathvariant="normal">E</mi><mo>°</mo><mo>-</mo><mfrac><mrow><mn>0</mn><mo>.</mo><mn>0591</mn></mrow><mi mathvariant="normal">n</mi></mfrac><mi>logQ</mi><mspace linebreak="newline"></mspace><mi mathvariant="normal">E</mi><mo>=</mo><mo>-</mo><mn>1</mn><mo>.23</mo><mo>-</mo><mfrac><mrow><mn>0</mn><mo>.0591</mo></mrow><mn>4</mn></mfrac><mi>log</mi><msup><mrow><mo>[</mo><msup><mi mathvariant="normal">H</mi><mo>+</mo></msup><mo>]</mo></mrow><mn>4</mn></msup></math><br/><math><mo>=</mo><mn>1.23</mn><mo>+</mo><mn>0.0591</mn><mo>×</mo><mi>p</mi><mi>H</mi><mo>=</mo><mo>-</mo><mn>1.23</mn><mo>+</mo><mn>0.0591</mn><mo>×</mo><mn>5</mn></math><br/><math><mo>=</mo><mo>-</mo><mn>1.23</mn><mo>+</mo><mn>0.2955</mn><mo>=</mo><mo>-</mo><mn>0.9345</mn><mi>V</mi><mo>=</mo><mo>-</mo><mn>0.93</mn><mi>V</mi></math></p><p>The Nernst equation defines the relationship between cell potential to standard potential and to the activities of the electrically active (electroactive) species. It relates the effective concentrations (activities) of the components of a cell reaction to the standard cell potential.</p></div>


title: whatare-the-linear-constraints-for-which-the-shaded-area-in-the-above-figure-is-the-solution-set
tags: ['Mathematics', 'Straight Lines', 'NDA', 'NDA 2007 (Phase 2)']
source_db: MarksBatch2_P4.db
slug:
whatare-the-linear-constraints-for-which-the-shaded-area-in-the-above-figure-is-the-solution-set-48994

question:
<div class="question">Whatare the linear constraints for which the shaded area in<br/>the above figure is the solution set? <br/><img src="https://cdn-question-pool.getmarks.app/pyq/nda/6tAyE5hpbq4qjUHa7QDdKU5V1LmGU3z2WFw4rv1l7tY.original.fullsize.png"/></div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">$\quad x-y \geq 1 ; x+2 y \leq 8 ; x+y \geq 1 ; x, y \geq 0$</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">$\quad x-y \leq 1 ; x+2 y \geq 8 ; x+y \leq 1 ; x, y \geq 0$</span> </li><li class="correct"> <span class="option-label">C</span> <span class="option-data">$x-y \leq 1 ; x+2 y \leq 8 ; x+y \geq 1 ; x, y \geq 0$</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">$x-y \leq 1 ; x+2 y \leq 8 ; x+y \leq 1 ; x, y \geq 0$</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">$x-y \leq 1 ; x+2 y \leq 8 ; x+y \geq 1 ; x, y \geq 0$</span> </div>

answer:
<div class="solution">The linear constraints for which the shaded region in the given figure is the solution set, are given by:<br/>$x-y \leq 1, x+2 y \leq 8, x+y \geq 1, x, y \geq 0$</div>


tags: ['Chemistry', 'Alcohols Phenols and Ethers']
options: None
correct_option: None
source_db: MarksBatch2_P4.db
title:
when-3methylbutant-20l-is-treated-with-hbr-the-following-reaction-takes-place-give-a-mechanism-for-this-reaction-hint-the-secondary-carbocation-formed

slug:
when-3methylbutant-20l-is-treated-with-hbr-the-following-reaction-takes-place-give-a-mechanism-for-this-reaction-hint-the-secondary-carbocation-formed-14213

question:
<div class="question">When 3-methylbutant 2-0l is treated with $\mathrm{HBr}$, the following reaction takes place:<br/><img src="https://cdn-question-pool.getmarks.app/modules/cbse/FDFluWUrYz0OipqK8NaNNO8nOQz1fMteOaCdm76_65s.original.fullsize.png"/><br/><br/>Give a mechanism for this reaction.<br/>(Hint : The secondary carbocation formed in step II rearranges to a more stable tertiary carbocation by a hydride ion shift from 3rd carbon atom.)</div>

answer:
<div class="solution"><img src="https://cdn-question-pool.getmarks.app/modules/cbse/wykGuXnB-7kn0fY5oAXX2W8P87LBiUrNGOsxYpcevIY.original.fullsize.png"/><br/><br/>Protonation of the given alcohol followed by loss of water gives a $2^{\circ}$ carbocation(I), which being unstable rearranges by 1 , 2-hydride shift to form the more stable $3^{\circ}$ carbocation (II). Nucleophilic attack by Br ion on this carbocation (II) gives the final product.</div>


tags: ['Chemistry', 'Thermodynamics (C)', 'MHT CET', 'MHT CET 2020 (19 Oct Shift 2)']
source_db: MarksBatch2_P4.db
title:
when-6-0-g-of-graphite-reacts-with-dihydrogen-to-give-methane-gas-37-4-kj-of-heat-is-liberated-what-is-standard-enthalpy-of-formation-of-ch-4-g

slug:
when-6-0-g-of-graphite-reacts-with-dihydrogen-to-give-methane-gas-37-4-kj-of-heat-is-liberated-what-is-standard-enthalpy-of-formation-of-ch-4-g-90103

question:
<div class="question">When $6 \cdot 0 \mathrm{~g}$ of graphite reacts with dihydrogen to give methane gas, $37 \cdot 4 \mathrm{~kJ}$ of heat is liberated. What is standard enthalpy of formation of $\mathrm{CH}_{4_{(g)}}$ ?</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">$112 \cdot 2 \mathrm{~kJ} \mathrm{~mol} \cdot 1$</span> </li><li class="correct"> <span class="option-label">B</span> <span class="option-data">$-74 \cdot 8 \mathrm{~kJ} \mathrm{~mol}^{-1}$</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">$-37 \cdot 4 \mathrm{~kJ} \mathrm{~mol}^{-1}$</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">$-112 \cdot 2 \mathrm{~kJ} \mathrm{~mol}^{-1}$</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">$-74 \cdot 8 \mathrm{~kJ} \mathrm{~mol}^{-1}$</span> </div>

answer:
<div class="solution">(A)<br/>$\mathrm{C}_{(8)}+2 \mathrm{H}_{2(8)} \longrightarrow \mathrm{CH}_{4(\mathrm{~g})}$<br/>For $6.0 \mathrm{~g}$ of graphite, $\Delta \mathrm{H}=-37.4 \mathrm{~kJ}$<br/>$\therefore$ For $12.0 \mathrm{~g}$ of graphite, $\quad \Delta \mathrm{H}^{0}=\frac{-37.4 \times 12}{6}=-74.8 \mathrm{~kJ} \mathrm{~mol}^{-1}$</div>


tags: ['Mathematics', 'Differential Equations', 'NDA', 'NDA 2009 (Phase 2)']
source_db: MarksBatch2_P4.db
title:
when-a-and-b-are-eliminated-from-the-equation-x-y-a-e-x-b-e-x-the-resulting-differential-equation-is-of

slug:
when-a-and-b-are-eliminated-from-the-equation-x-y-a-e-x-b-e-x-the-resulting-differential-equation-is-of-51935

question:
<div class="question">When $a$ and $b$ are eliminated from the equation $x y=a e^{x}+$ $b e^{-x}$, the resulting differential equation is of $\quad$</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">first order and first degree</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">first order and second degree</span> </li><li class="correct"> <span class="option-label">C</span> <span class="option-data">second order and first degree</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">second order and second degree</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">second order and first degree</span> </div>

answer:
<div class="solution">Given equation is $x y=a e^{x}+b e^{-x}$<br/>Differentiate both side, w.r.t. $^{\circ} x$<br/>$$<br/>x \frac{d y}{d x}+y=a e^{x}-b e^{-x}<br/>$$<br/>Again differentiate both side w.r.t ' $x$ '<br/>$$<br/>\begin{aligned}<br/>&amp; x \frac{d^{2} y}{d x^{2}}+\frac{d y}{d x}+\frac{d y}{d x}=a e^{x}+b e^{-x} \\<br/>\Rightarrow &amp; x \frac{d^{2} y}{d x^{2}}+\left(\frac{d y}{d x}\right)^{2}=x y(\text { from }(1))<br/>\end{aligned}<br/>$$<br/>Hence, this is the differential equation of second order and first degree.</div>


title: when-a-beam-of-light-is-passed-through-a-colloidal-sol-what-is-observed
slug: when-a-beam-of-light-is-passed-through-a-colloidal-sol-what-is-observed-77955
tags: ['Chemistry', 'Surface Chemistry', 'NEET']
source_db: MarksBatch2_P4.db
question:
<div class="question">When a beam of light is passed through a colloidal sol, what is observed?</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">The light is not visible.</span> </li><li class="correct"> <span class="option-label">B</span> <span class="option-data">Tyndall Effect The path of the beam becomes visible due to scattering of light by the colloidal particles.</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 light changes color.</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">The light becomes more intense.</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">Tyndall Effect The path of the beam becomes visible due to scattering of light by the colloidal particles.</span> </div>

answer:
<div class="solution">Correct Option is : (B)<br/>Tyndall Effect The path of the beam becomes visible due to scattering of light by the colloidal particles.</div>


title: when-a-bimetallic-strip-is-heated-it
slug: when-a-bimetallic-strip-is-heated-it-29476
question: <div class="question"><p>When a bimetallic strip is heated, it</p> </div>
tags: ['Physics', 'Thermal Properties of Matter', 'NEET']
source_db: MarksBatch2_P4.db
options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">does not bend at all</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">gets twisted in the from of an helix</span> </li><li class="correct"> <span class="option-label">C</span> <span class="option-data">bends in the form of an arc with the more expandable metal outside</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">bends in the form of an arc with the more expandable metal inside</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">bends in the form of an arc with the more expandable metal outside</span> </div>

answer:
<div class="solution">A bimetallic strip on being heated bends in from of an arc with more expandable metal <math><mo>(</mo><mi>A</mi><mo>)</mo></math> outside (as shown)<br/><br/><br/><img alt="" object-fit:contain="" src="https://cdn-question-pool.getmarks.app/nta_abhyas/neet/images/ci/image12-e140c7d3-9ba4-4df3-8c94-046ed4b9cb7f.jpg" style="max-width:"/></div>


title: when-a-card-is-drawn-from-a-well-shuffled-pack-of-cards-what-is-the-probability-of-getting-a-queen
tags: ['Mathematics', 'Probability', 'NDA', 'NDA 2009 (Phase 1)']
source_db: MarksBatch2_P4.db
slug:
when-a-card-is-drawn-from-a-well-shuffled-pack-of-cards-what-is-the-probability-of-getting-a-queen-27824

question:
<div class="question">When a card is drawn from a well shuffled pack of cards. what is the probability of getting a Queen?</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">$2 / 13$</span> </li><li class="correct"> <span class="option-label">B</span> <span class="option-data">$1 / 13$</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">$1 / 26$</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">$1 / 52$</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">$1 / 13$</span> </div>

answer:
<div class="solution">Since, $n(S)=52$ and $n(E)=4$<br/>$\therefore \quad P(E)=\frac{n(E)}{n(S)}=\frac{4}{52}=\frac{1}{13}$</div>


tags: ['Physics', 'Electromagnetic Induction', 'MHT CET', 'MHT CET 2022 (07 Aug Shift 2)']
source_db: MarksBatch2_P4.db
title:
when-a-current-of-4-a-changes-to-8-a-in-06-s-in-a-primary-coil-it-induces-an-e-m-f-of-50-mv-in-secondary-coil-the-mutual-inductance-between-two-coils-

slug:
when-a-current-of-4-a-changes-to-8-a-in-06-s-in-a-primary-coil-it-induces-an-e-m-f-of-50-mv-in-secondary-coil-the-mutual-inductance-between-two-coils-49211

question:
<div class="question">When a current of $4 \mathrm{~A}$ changes to $8 \mathrm{~A}$ in $0.6 \mathrm{~s}$ in a primary coil it induces an e. m. f. of $50 \mathrm{mV}$ in secondary coil. The mutual inductance between two coils is</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">$1.2 \mathrm{mH}$</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">$3.33 \mathrm{mH}$</span> </li><li class="correct"> <span class="option-label">C</span> <span class="option-data">$7.5 \mathrm{mH}$</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">$10.5 \mathrm{mH}$</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">$7.5 \mathrm{mH}$</span> </div>

answer:
<div class="solution">Change in current in primary coil,<br/>$\mathrm{di}_1=(8-4) \mathrm{A}=4 \mathrm{~A}$<br/>Time taken, $\mathrm{dt}=0.6 \mathrm{~s}$<br/>Induced e. m. f in secondary coil,<br/>$\mathrm{E}_2=50 \times 10^{-3} \mathrm{~V}$<br/>So, mutual inductance is,<br/>$M=\frac{E_2}{\mathrm{di}_1 / \mathrm{dt}}=\frac{\mathrm{E}_2 \mathrm{dt}}{\mathrm{di}_1}=\frac{50 \times 10^{-3} \mathrm{~V} \times 0.6 \mathrm{~s}}{4 \mathrm{~A}}=7.5 \times 10^{-3} \mathrm{H}=7.5 \mathrm{mH}$</div>


tags: ['Physics', 'Current Electricity', 'NEET']
source_db: MarksBatch2_P4.db
title:
when-a-daniel-cell-is-connected-in-the-secondary-circuit-of-a-potentiometer-the-balancing-length-is-found-to-be-540-cm-if-the-balancing-length-becomes-1

slug:
when-a-daniel-cell-is-connected-in-the-secondary-circuit-of-a-potentiometer-the-balancing-length-is-found-to-be-540-cm-if-the-balancing-length-becomes-1-72883

question:
<div class="question">When a Daniel cell is connected in the secondary circuit of a potentiometer, the balancing length is found to be <math xmlns="http://www.w3.org/1998/Math/MathML"><mn>540</mn><mo> </mo><mi>cm</mi></math>. If the balancing length becomes <math xmlns="http://www.w3.org/1998/Math/MathML"><mn>500</mn><mo> </mo><mi>cm</mi></math> when the cell is short-circuited with <math><mn>1</mn><mi> </mi><mi mathvariant="normal">Î©</mi><mo>,</mo></math> the internal resistance of the cell is</div>

options:
<ul class="options"> <li class="correct"> <span class="option-label">A</span> <span class="option-data"><math><mn>0.08</mn><mi>Â </mi><mi mathvariant="normal">Î©</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><mn>0.04</mn><mi>Â </mi><mi mathvariant="normal">Î©</mi></math></span> </li><li class=""> <span class="option-label">C</span> <span class="option-data"><math><mn>1.08</mn><mi>Â </mi><mi mathvariant="normal">Î©</mi></math></span> </li><li class=""> <span class="option-label">D</span> <span class="option-data"><math><mn>1.45</mn><mi>Â </mi><mi mathvariant="normal">Î©</mi></math></span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value"><math><mn>0.08</mn><mi>Â </mi><mi mathvariant="normal">Î©</mi></math></span> </div>

answer:
<div class="solution">Internal resistance, <br/><br/><math><mi>r</mi><mo>=</mo><mi>R</mi><mfenced separators="|"><mrow><mfrac><mrow><msub><mrow><mi>l</mi></mrow><mrow><mn>1</mn></mrow></msub><mo>-</mo><msub><mrow><mi>l</mi></mrow><mrow><mn>2</mn></mrow></msub></mrow><mrow><msub><mrow><mi>l</mi></mrow><mrow><mn>2</mn></mrow></msub></mrow></mfrac></mrow></mfenced><mo>=</mo><mn>1</mn><mfenced separators="|"><mrow><mfrac><mrow><mn>540</mn><mo>-</mo><mn>500</mn></mrow><mrow><mn>500</mn></mrow></mfrac></mrow></mfenced><mo>=</mo><mfrac><mrow><mn>40</mn></mrow><mrow><mn>500</mn></mrow></mfrac><mo>=</mo><mn>0.08</mn><mi>Â </mi><mi mathvariant="normal">Î©</mi></math></div>


tags: ['Physics', 'Current Electricity', 'JEE Main']
options: None
correct_option: <div class="correct-answer"> The correct answer is: <span class="option-value">0.08</span> </div>
source_db: MarksBatch2_P4.db
title:
when-a-daniel-cell-is-connected-in-the-secondary-circuit-of-a-potentiometer-the-balancing-length-is-found-to-be-540-cm-if-the-balancing-length-becomes

slug:
when-a-daniel-cell-is-connected-in-the-secondary-circuit-of-a-potentiometer-the-balancing-length-is-found-to-be-540-cm-if-the-balancing-length-becomes-45069

question:
<div class="question">When a Daniel cell is connected in the secondary circuit of a potentiometer, the balancing length is found to be <math xmlns="http://www.w3.org/1998/Math/MathML"><mn>540</mn><mo> </mo><mi>cm</mi></math>. If the balancing length becomes <math xmlns="http://www.w3.org/1998/Math/MathML"><mn>500</mn><mo> </mo><mi>cm</mi></math> when the cell is short-circuited with <math><mn>1</mn><mi> </mi><mi mathvariant="normal">Î©</mi><mo>,</mo></math> the internal resistance of the cell (in <math xmlns="http://www.w3.org/1998/Math/MathML"><mi mathvariant="normal">Î©</mi></math>) is</div>

answer:
<div class="solution">Internal resistance,<br/><br/><math><mi>r</mi><mo>=</mo><mi>R</mi><mfenced separators="|"><mrow><mfrac><mrow><msub><mrow><mi>l</mi></mrow><mrow><mn>1</mn></mrow></msub><mo>-</mo><msub><mrow><mi>l</mi></mrow><mrow><mn>2</mn></mrow></msub></mrow><mrow><msub><mrow><mi>l</mi></mrow><mrow><mn>2</mn></mrow></msub></mrow></mfrac></mrow></mfenced><mo>=</mo><mn>1</mn><mfenced separators="|"><mrow><mfrac><mrow><mn>540</mn><mo>-</mo><mn>500</mn></mrow><mrow><mn>500</mn></mrow></mfrac></mrow></mfenced><mo>=</mo><mfrac><mrow><mn>40</mn></mrow><mrow><mn>500</mn></mrow></mfrac><mo>=</mo><mn>0.08</mn><mi> </mi><mi mathvariant="normal">Î©</mi></math></div>


tags: ['Biology', 'Anatomy of Flowering Plants', 'NEET']
correct_option: <div class="correct-answer"> The correct answer is: <span class="option-value">Open</span> </div>
source_db: MarksBatch2_P4.db
title:
when-a-meristematic-tissue-called-cambium-is-present-inside-a-vascular-bundle-the-bundle-is-said-to-be

slug:
when-a-meristematic-tissue-called-cambium-is-present-inside-a-vascular-bundle-the-bundle-is-said-to-be-88997

question:
<div class="question">When a meristematic tissue called cambium is present inside a vascular bundle, the bundle is said to be</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">Conjoint</span> </li><li class="correct"> <span class="option-label">B</span> <span class="option-data">Open</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">Closed</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">Collateral</span> </li> </ul>

answer:
<div class="solution">Vascular bundles having cambium in between xylem and phloem are called open bundles. Due to cambium, secondary growth is possible. Vascular bundles which lack cambium are called closed bundles. Open bundles occur in dicots, and closed bundles occur in monocots.</div>


tags: ['Physics', 'Ray Optics', 'NEET']
source_db: MarksBatch2_P4.db
title:
when-a-picture-drawn-on-paper-is-seen-through-a-slab-of-a-transparent-material-of-thickness-5-cm-it-appears-to-be-raised-by-1-5-cm-the-critical-angle-

slug:
when-a-picture-drawn-on-paper-is-seen-through-a-slab-of-a-transparent-material-of-thickness-5-cm-it-appears-to-be-raised-by-1-5-cm-the-critical-angle-68809

question:
<div class="question">When a picture drawn on paper is seen through a slab of a transparent material of thickness <math xmlns="http://www.w3.org/1998/Math/MathML"><mn>5</mn><mo> </mo><mi>cm</mi></math>, it appears to be raised by <math xmlns="http://www.w3.org/1998/Math/MathML"><mn>1</mn><mo>.</mo><mn>5</mn><mo> </mo><mi>cm</mi></math>. The critical angle at the boundary of this transparent material and air is -</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"><msup><mi>sin</mi><mrow><mo>-</mo><mn>1</mn></mrow></msup><mfenced separators="|"><mfrac><mn>2</mn><mn>3</mn></mfrac></mfenced></math></span> </li><li class=""> <span class="option-label">B</span> <span class="option-data"><math xmlns="http://www.w3.org/1998/Math/MathML"><msup><mi>sin</mi><mrow><mo>-</mo><mn>1</mn></mrow></msup><mfenced separators="|"><mfrac><mn>5</mn><mn>7</mn></mfrac></mfenced></math></span> </li><li class=""> <span class="option-label">C</span> <span class="option-data"><math xmlns="http://www.w3.org/1998/Math/MathML"><msup><mi>sin</mi><mrow><mo>-</mo><mn>1</mn></mrow></msup><mfenced separators="|"><mfrac><mn>6</mn><mn>11</mn></mfrac></mfenced></math></span> </li><li class="correct"> <span class="option-label">D</span> <span class="option-data"><math xmlns="http://www.w3.org/1998/Math/MathML"><msup><mi>sin</mi><mrow><mo>-</mo><mn>1</mn></mrow></msup><mfenced separators="|"><mfrac><mn>7</mn><mn>10</mn></mfrac></mfenced></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 xmlns="http://www.w3.org/1998/Math/MathML"><msup><mi>sin</mi><mrow><mo>-</mo><mn>1</mn></mrow></msup><mfenced separators="|"><mfrac><mn>7</mn><mn>10</mn></mfrac></mfenced></math></span> </div>

answer:
<div class="solution"><math><mi>s</mi><mo>=</mo><mfenced separators="|"><mrow><mn>1</mn><mo>–</mo><mfrac><mrow><mn>1</mn></mrow><mrow><mi>μ</mi></mrow></mfrac></mrow></mfenced><mi>t</mi></math><br/><br/><math><mn>1</mn><mo>-</mo><mfrac><mrow><mi>s</mi></mrow><mrow><mi>t</mi></mrow></mfrac><mo>=</mo><mfrac><mrow><mn>1</mn></mrow><mrow><mi>μ</mi></mrow></mfrac></math><br/><br/><math><mi>μ</mi><mo>=</mo><mfrac><mrow><mn>1</mn></mrow><mrow><mn>1</mn><mo>–</mo><mfrac><mrow><mi>s</mi></mrow><mrow><mi>t</mi></mrow></mfrac></mrow></mfrac><mo>=</mo><mfrac><mrow><mn>1</mn></mrow><mrow><mn>1</mn><mo>–</mo><mfrac><mrow><mn>3</mn></mrow><mrow><mn>2</mn><mo>×</mo><mn>5</mn></mrow></mfrac></mrow></mfrac><mo>=</mo><mfrac><mrow><mn>10</mn></mrow><mrow><mn>7</mn></mrow></mfrac></math><br/><br/><math xmlns="http://www.w3.org/1998/Math/MathML"><mo>⇒</mo><msub><mi>θ</mi><mi>c</mi></msub><mo>=</mo><msup><mi>sin</mi><mrow><mo>-</mo><mn>1</mn></mrow></msup><mo>⁡</mo><mfenced separators="|"><mfrac><mn>1</mn><mi>μ</mi></mfrac></mfenced></math><br/><br/><math xmlns="http://www.w3.org/1998/Math/MathML"><mo>⇒</mo><msub><mi>θ</mi><mi>c</mi></msub><mo>=</mo><msup><mi>sin</mi><mrow><mo>-</mo><mn>1</mn></mrow></msup><mfenced separators="|"><mfrac><mn>7</mn><mn>10</mn></mfrac></mfenced></math></div>


title: when-a-standard-solution-of-naoh-is-left-in-air-for-a-few-hours
slug: when-a-standard-solution-of-naoh-is-left-in-air-for-a-few-hours-66707
question: <div class="question">When a standard solution of NaOH is left in air for a few hours</div>
tags: ['Chemistry', 's Block Elements', 'NEET']
source_db: MarksBatch2_P4.db
options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">a precipitate will form</span> </li><li class="correct"> <span class="option-label">B</span> <span class="option-data">strength of solution will decrease</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 strength of solution will increase</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">the concentration of <math><mi mathvariant="normal">N</mi><msup><mrow><mi mathvariant="normal">a</mi></mrow><mrow><mo>+</mo></mrow></msup></math> ion in solution will remains same</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">strength of solution will decrease</span> </div>

answer:
<div class="solution">NaOH being deliquescent absorb water form atmosphere therefore strength of solution will decrease.</div>


tags: ['Physics', 'Waves and Sound', 'JEE Main']
source_db: MarksBatch2_P4.db
title:
when-a-string-is-divided-into-three-segments-of-length-l-1-l-2-and-l-3-the-fundamental-frequencies-of-these-three-segments-are-v-1-v-2-and-v-3-respect-1

slug:
when-a-string-is-divided-into-three-segments-of-length-l-1-l-2-and-l-3-the-fundamental-frequencies-of-these-three-segments-are-v-1-v-2-and-v-3-respect-1-59315

question:
<div class="question">When a string is divided into three segments of length $l_{1}, l_{2},$ and $l_{3}$, the fundamental frequencies of these three segments are $v_{1}, v_{2}$ and $v_{3}$ respectively. The original fundamental frequency
<br/> <br/>(v) of the string is</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">$\quad \sqrt{v}=\sqrt{v_{1}}+\sqrt{v_{2}}+\sqrt{v_{3}}$</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">$v=v_{1}+v_{2}+v_{3}$</span> </li><li class="correct"> <span class="option-label">C</span> <span class="option-data">$\frac{1}{v}=\frac{1}{v_{1}}+\frac{1}{v_{2}}+\frac{1}{v_{3}}$.</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">$\frac{1}{\sqrt{v}}=\frac{1}{\sqrt{v_{1}}}+\frac{1}{\sqrt{v_{2}}}+\frac{1}{\sqrt{v_{3}}}$</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">$\frac{1}{v}=\frac{1}{v_{1}}+\frac{1}{v_{2}}+\frac{1}{v_{3}}$.</span> </div>

answer:
<div class="solution">Fundamental frequency is given by
<br/> <br/>$$
<br/> <br/>v=\frac{1}{2 l} \sqrt{\frac{T}{\mu}} \Rightarrow v \propto \frac{1}{l} \Rightarrow P \propto \frac{1}{v}
<br/> <br/>$$
<br/> <br/>Since, $P$ divided into $l_{1}, l_{2}$ and $l_{3}$ segments Here $l=l_{1}+l_{2}+l_{3}$
<br/> <br/>So $\quad \frac{1}{v}=\frac{1}{v_{1}}+\frac{1}{v_{2}}+\frac{1}{v_{3}}$</div>


tags: ['Physics', 'Waves and Sound', 'BITSAT', 'BITSAT 2014']
source_db: MarksBatch2_P4.db
title:
when-a-string-is-divided-into-three-segments-of-length-l-1-l-2-and-l-3-the-fundamental-frequencies-of-these-three-segments-are-v-1-v-2-and-v-3-respect

slug:
when-a-string-is-divided-into-three-segments-of-length-l-1-l-2-and-l-3-the-fundamental-frequencies-of-these-three-segments-are-v-1-v-2-and-v-3-respect-95270

question:
<div class="question">When a string is divided into three segments of length $l_{1}, l_{2},$ and $l_{3}$, the fundamental frequencies of these three segments are $v_{1}, v_{2}$ and $v_{3}$ respectively. The original fundamental frequency
<br/> <br/>(v) of the string is</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">$\quad \sqrt{v}=\sqrt{v_{1}}+\sqrt{v_{2}}+\sqrt{v_{3}}$</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">$v=v_{1}+v_{2}+v_{3}$</span> </li><li class="correct"> <span class="option-label">C</span> <span class="option-data">$\frac{1}{v}=\frac{1}{v_{1}}+\frac{1}{v_{2}}+\frac{1}{v_{3}}$.</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">$\frac{1}{\sqrt{v}}=\frac{1}{\sqrt{v_{1}}}+\frac{1}{\sqrt{v_{2}}}+\frac{1}{\sqrt{v_{3}}}$</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">$\frac{1}{v}=\frac{1}{v_{1}}+\frac{1}{v_{2}}+\frac{1}{v_{3}}$.</span> </div>

answer:
<div class="solution">Fundamental frequency is given by
<br/> <br/>$$
<br/> <br/>v=\frac{1}{2 l} \sqrt{\frac{T}{\mu}} \Rightarrow v \propto \frac{1}{l} \Rightarrow P \propto \frac{1}{v}
<br/> <br/>$$
<br/> <br/>Since, $P$ divided into $l_{1}, l_{2}$ and $l_{3}$ segments Here $l=l_{1}+l_{2}+l_{3}$
<br/> <br/>So $\quad \frac{1}{v}=\frac{1}{v_{1}}+\frac{1}{v_{2}}+\frac{1}{v_{3}}$</div>


tags: ['Physics', 'Waves and Sound', 'NEET']
source_db: MarksBatch2_P4.db
title:
when-a-string-is-divided-into-three-segments-of-lengths-l-1-l-2-and-l-3-the-fundamental-frequencies-of-these-three-segments-are-1-2-and-3-respectively-1

slug:
when-a-string-is-divided-into-three-segments-of-lengths-l-1-l-2-and-l-3-the-fundamental-frequencies-of-these-three-segments-are-1-2-and-3-respectively-1-85562

question:
<div class="question">When a string is divided into three segments of lengths <math xmlns="http://www.w3.org/1998/Math/MathML"><msub><mtext mathvariant="italic">l</mtext><mn>1</mn></msub></math>, <math xmlns="http://www.w3.org/1998/Math/MathML"><msub><mtext mathvariant="italic">l</mtext><mn>2</mn></msub></math> and <math xmlns="http://www.w3.org/1998/Math/MathML"><msub><mtext mathvariant="italic">l</mtext><mn>3</mn></msub></math> the fundamental frequencies of these three segments are <math xmlns="http://www.w3.org/1998/Math/MathML"><msub><mi mathvariant="normal">Î½</mi><mn>1</mn></msub></math>, <math xmlns="http://www.w3.org/1998/Math/MathML"><msub><mi mathvariant="normal">Î½</mi><mn>2</mn></msub></math> and <math xmlns="http://www.w3.org/1998/Math/MathML"><msub><mi mathvariant="normal">Î½</mi><mn>3</mn></msub></math> respectively. The original fundamental frequency <math xmlns="http://www.w3.org/1998/Math/MathML"><mfenced><mi mathvariant="normal">Î½</mi></mfenced></math> of the string is</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"><msqrt><mi mathvariant="normal">ν</mi></msqrt><mo>=</mo><msqrt><msub><mi mathvariant="normal">ν</mi><mn>1</mn></msub></msqrt><mo>+</mo><msqrt><msub><mi mathvariant="normal">ν</mi><mn>2</mn></msub></msqrt><mo>+</mo><msqrt><msub><mi mathvariant="normal">ν</mi><mn>3</mn></msub></msqrt></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">ν</mi><mo>=</mo><msub><mi mathvariant="normal">ν</mi><mn>1</mn></msub><mo>+</mo><msub><mi mathvariant="normal">ν</mi><mn>2</mn></msub><mo>+</mo><msub><mi mathvariant="normal">ν</mi><mn>3</mn></msub></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"><mfrac><mn>1</mn><mi mathvariant="normal">Î½</mi></mfrac><mo>=</mo><mfrac><mn>1</mn><msub><mi mathvariant="normal">Î½</mi><mn>1</mn></msub></mfrac><mo>+</mo><mfrac><mn>1</mn><msub><mi mathvariant="normal">Î½</mi><mn>2</mn></msub></mfrac><mo>+</mo><mfrac><mn>1</mn><msub><mi mathvariant="normal">Î½</mi><mn>3</mn></msub></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">D</span> <span class="option-data"><math xmlns="http://www.w3.org/1998/Math/MathML"><mfrac><mn>1</mn><msqrt><mi mathvariant="normal">ν</mi></msqrt></mfrac><mo>=</mo><mfrac><mn>1</mn><msqrt><msub><mi mathvariant="normal">ν</mi><mn>1</mn></msub></msqrt></mfrac><mo>+</mo><mfrac><mn>1</mn><msqrt><msub><mi mathvariant="normal">ν</mi><mn>2</mn></msub></msqrt></mfrac><mo>+</mo><mfrac><mn>1</mn><msqrt><msub><mi mathvariant="normal">ν</mi><mn>3</mn></msub></msqrt></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><mn>1</mn><mi mathvariant="normal">Î½</mi></mfrac><mo>=</mo><mfrac><mn>1</mn><msub><mi mathvariant="normal">Î½</mi><mn>1</mn></msub></mfrac><mo>+</mo><mfrac><mn>1</mn><msub><mi mathvariant="normal">Î½</mi><mn>2</mn></msub></mfrac><mo>+</mo><mfrac><mn>1</mn><msub><mi mathvariant="normal">Î½</mi><mn>3</mn></msub></mfrac></math></span> </div>

answer:
<div class="solution">Let <math xmlns="http://www.w3.org/1998/Math/MathML"><mtext mathvariant="italic">l</mtext></math> be the length of the string.<br/><br/>The fundamental frequency is given by<br/><br/><math xmlns="http://www.w3.org/1998/Math/MathML"><mi mathvariant="normal">ν</mi><mo>=</mo><mfrac><mn>1</mn><mrow><mn>2</mn><mi>l</mi></mrow></mfrac><msqrt><mfrac><mrow><mi mathvariant="normal">T</mi><mo>⁡</mo></mrow><mi mathvariant="normal">μ</mi></mfrac></msqrt></math><br/><br/><math xmlns="http://www.w3.org/1998/Math/MathML"><mtext>or</mtext><mspace width="0.5em"></mspace><mspace width="0.5em"></mspace><mi mathvariant="normal">ν</mi><mo>∝</mo><mfrac><mn>1</mn><mrow><mi>l</mi><mo>⁡</mo></mrow></mfrac></math> ( <math xmlns="http://www.w3.org/1998/Math/MathML"><mo>∵</mo><mo> </mo><mi mathvariant="normal">T</mi></math> and <math xmlns="http://www.w3.org/1998/Math/MathML"><mi mathvariant="normal">μ</mi></math> are constant )  <br/><br/><math xmlns="http://www.w3.org/1998/Math/MathML"><mtext>or</mtext><mspace width="0.5em"></mspace><mspace width="0.5em"></mspace><mi mathvariant="normal">ν</mi><mo>∝</mo><mfrac><mi mathvariant="normal">k</mi><mrow><mi>l</mi><mo>⁡</mo></mrow></mfrac></math> ( where <math xmlns="http://www.w3.org/1998/Math/MathML"><mi mathvariant="normal">k</mi></math> is a constant )<br/><br/>Here, <math xmlns="http://www.w3.org/1998/Math/MathML"><msub><mi>l</mi><mn>1</mn></msub><mo>=</mo><mfrac><mi mathvariant="normal">k</mi><msub><mi mathvariant="normal">ν</mi><mn>1</mn></msub></mfrac></math>, <math xmlns="http://www.w3.org/1998/Math/MathML"><msub><mi>l</mi><mn>2</mn></msub><mo>=</mo><mfrac><mi mathvariant="normal">k</mi><msub><mi mathvariant="normal">ν</mi><mn>2</mn></msub></mfrac></math>, <math xmlns="http://www.w3.org/1998/Math/MathML"><msub><mi>l</mi><mn>3</mn></msub><mo>=</mo><mfrac><mi mathvariant="normal">k</mi><msub><mi mathvariant="normal">ν</mi><mn>3</mn></msub></mfrac></math> and <math xmlns="http://www.w3.org/1998/Math/MathML"><mi>l</mi><mo>=</mo><mfrac><mi mathvariant="normal">k</mi><mi mathvariant="normal">ν</mi></mfrac></math><br/><br/>But <math xmlns="http://www.w3.org/1998/Math/MathML"><mtext mathvariant="italic">l</mtext><mo>=</mo><msub><mtext mathvariant="italic">l</mtext><mn>1</mn></msub><mo>+</mo><msub><mtext mathvariant="italic">l</mtext><mn>2</mn></msub><mo>+</mo><msub><mtext mathvariant="italic">l</mtext><mn>3</mn></msub></math><br/><br/><math xmlns="http://www.w3.org/1998/Math/MathML"><mo>∴</mo><mo> </mo><mfrac><mn>1</mn><mi mathvariant="normal">ν</mi></mfrac><mo>=</mo><mfrac><mn>1</mn><msub><mi mathvariant="normal">ν</mi><mn>1</mn></msub></mfrac><mo>+</mo><mfrac><mn>1</mn><msub><mi mathvariant="normal">ν</mi><mn>2</mn></msub></mfrac><mo>+</mo><mfrac><mn>1</mn><msub><mi mathvariant="normal">ν</mi><mn>3</mn></msub></mfrac></math></div>


tags: ['Physics', 'Oscillations', 'JEE Main']
source_db: MarksBatch2_P4.db
title:
when-a-string-is-divided-into-three-segments-of-lengths-l-1-l-2-and-l-3-the-fundamental-frequencies-of-these-three-segments-are-1-2-and-3-respectively

slug:
when-a-string-is-divided-into-three-segments-of-lengths-l-1-l-2-and-l-3-the-fundamental-frequencies-of-these-three-segments-are-1-2-and-3-respectively-17464

question:
<div class="question">When a string is divided into three segments of lengths <math xmlns="http://www.w3.org/1998/Math/MathML"><msub><mtext mathvariant="italic">l</mtext><mn>1</mn></msub></math>, <math xmlns="http://www.w3.org/1998/Math/MathML"><msub><mtext mathvariant="italic">l</mtext><mn>2</mn></msub></math> and <math xmlns="http://www.w3.org/1998/Math/MathML"><msub><mtext mathvariant="italic">l</mtext><mn>3</mn></msub></math> the fundamental frequencies of these three segments are <math xmlns="http://www.w3.org/1998/Math/MathML"><msub><mi mathvariant="normal">Î½</mi><mn>1</mn></msub></math>, <math xmlns="http://www.w3.org/1998/Math/MathML"><msub><mi mathvariant="normal">Î½</mi><mn>2</mn></msub></math> and <math xmlns="http://www.w3.org/1998/Math/MathML"><msub><mi mathvariant="normal">Î½</mi><mn>3</mn></msub></math> respectively. The original fundamental frequency <math xmlns="http://www.w3.org/1998/Math/MathML"><mfenced><mi mathvariant="normal">Î½</mi></mfenced></math> of the string is</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"><msqrt><mi mathvariant="normal">ν</mi></msqrt><mo>=</mo><msqrt><msub><mi mathvariant="normal">ν</mi><mn>1</mn></msub></msqrt><mo>+</mo><msqrt><msub><mi mathvariant="normal">ν</mi><mn>2</mn></msub></msqrt><mo>+</mo><msqrt><msub><mi mathvariant="normal">ν</mi><mn>3</mn></msub></msqrt></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">ν</mi><mo>=</mo><msub><mi mathvariant="normal">ν</mi><mn>1</mn></msub><mo>+</mo><msub><mi mathvariant="normal">ν</mi><mn>2</mn></msub><mo>+</mo><msub><mi mathvariant="normal">ν</mi><mn>3</mn></msub></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"><mfrac><mn>1</mn><mi mathvariant="normal">Î½</mi></mfrac><mo>=</mo><mfrac><mn>1</mn><msub><mi mathvariant="normal">Î½</mi><mn>1</mn></msub></mfrac><mo>+</mo><mfrac><mn>1</mn><msub><mi mathvariant="normal">Î½</mi><mn>2</mn></msub></mfrac><mo>+</mo><mfrac><mn>1</mn><msub><mi mathvariant="normal">Î½</mi><mn>3</mn></msub></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">D</span> <span class="option-data"><math xmlns="http://www.w3.org/1998/Math/MathML"><mfrac><mn>1</mn><msqrt><mi mathvariant="normal">ν</mi></msqrt></mfrac><mo>=</mo><mfrac><mn>1</mn><msqrt><msub><mi mathvariant="normal">ν</mi><mn>1</mn></msub></msqrt></mfrac><mo>+</mo><mfrac><mn>1</mn><msqrt><msub><mi mathvariant="normal">ν</mi><mn>2</mn></msub></msqrt></mfrac><mo>+</mo><mfrac><mn>1</mn><msqrt><msub><mi mathvariant="normal">ν</mi><mn>3</mn></msub></msqrt></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><mn>1</mn><mi mathvariant="normal">Î½</mi></mfrac><mo>=</mo><mfrac><mn>1</mn><msub><mi mathvariant="normal">Î½</mi><mn>1</mn></msub></mfrac><mo>+</mo><mfrac><mn>1</mn><msub><mi mathvariant="normal">Î½</mi><mn>2</mn></msub></mfrac><mo>+</mo><mfrac><mn>1</mn><msub><mi mathvariant="normal">Î½</mi><mn>3</mn></msub></mfrac></math></span> </div>

answer:
<div class="solution">Let <math xmlns="http://www.w3.org/1998/Math/MathML"><mtext mathvariant="italic">l</mtext></math> be the length of the string.<br/><br/>The fundamental frequency is given by<br/><br/><math xmlns="http://www.w3.org/1998/Math/MathML"><mi mathvariant="normal">ν</mi><mo>=</mo><mfrac><mn>1</mn><mrow><mn>2</mn><mi>l</mi></mrow></mfrac><msqrt><mfrac><mrow><mi mathvariant="normal">T</mi><mo>⁡</mo></mrow><mi mathvariant="normal">μ</mi></mfrac></msqrt></math><br/><br/><math xmlns="http://www.w3.org/1998/Math/MathML"><mtext>or</mtext><mspace width="0.5em"></mspace><mspace width="0.5em"></mspace><mi mathvariant="normal">ν</mi><mo>∝</mo><mfrac><mn>1</mn><mrow><mi>l</mi><mo>⁡</mo></mrow></mfrac></math> ( <math xmlns="http://www.w3.org/1998/Math/MathML"><mo>∵</mo><mo> </mo><mi mathvariant="normal">T</mi></math> and <math xmlns="http://www.w3.org/1998/Math/MathML"><mi mathvariant="normal">μ</mi></math> are constant )  <br/><br/><math xmlns="http://www.w3.org/1998/Math/MathML"><mtext>or</mtext><mspace width="0.5em"></mspace><mspace width="0.5em"></mspace><mi mathvariant="normal">ν</mi><mo>∝</mo><mfrac><mi mathvariant="normal">k</mi><mrow><mi>l</mi><mo>⁡</mo></mrow></mfrac></math> ( where <math xmlns="http://www.w3.org/1998/Math/MathML"><mi mathvariant="normal">k</mi></math> is a constant )<br/><br/>Here, <math xmlns="http://www.w3.org/1998/Math/MathML"><msub><mi>l</mi><mn>1</mn></msub><mo>=</mo><mfrac><mi mathvariant="normal">k</mi><msub><mi mathvariant="normal">ν</mi><mn>1</mn></msub></mfrac></math>, <math xmlns="http://www.w3.org/1998/Math/MathML"><msub><mi>l</mi><mn>2</mn></msub><mo>=</mo><mfrac><mi mathvariant="normal">k</mi><msub><mi mathvariant="normal">ν</mi><mn>2</mn></msub></mfrac></math>, <math xmlns="http://www.w3.org/1998/Math/MathML"><msub><mi>l</mi><mn>3</mn></msub><mo>=</mo><mfrac><mi mathvariant="normal">k</mi><msub><mi mathvariant="normal">ν</mi><mn>3</mn></msub></mfrac></math> and <math xmlns="http://www.w3.org/1998/Math/MathML"><mi>l</mi><mo>=</mo><mfrac><mi mathvariant="normal">k</mi><mi mathvariant="normal">ν</mi></mfrac></math><br/><br/>But <math xmlns="http://www.w3.org/1998/Math/MathML"><mtext mathvariant="italic">l</mtext><mo>=</mo><msub><mtext mathvariant="italic">l</mtext><mn>1</mn></msub><mo>+</mo><msub><mtext mathvariant="italic">l</mtext><mn>2</mn></msub><mo>+</mo><msub><mtext mathvariant="italic">l</mtext><mn>3</mn></msub></math><br/><br/><math xmlns="http://www.w3.org/1998/Math/MathML"><mo>∴</mo><mo> </mo><mfrac><mn>1</mn><mi mathvariant="normal">ν</mi></mfrac><mo>=</mo><mfrac><mn>1</mn><msub><mi mathvariant="normal">ν</mi><mn>1</mn></msub></mfrac><mo>+</mo><mfrac><mn>1</mn><msub><mi mathvariant="normal">ν</mi><mn>2</mn></msub></mfrac><mo>+</mo><mfrac><mn>1</mn><msub><mi mathvariant="normal">ν</mi><mn>3</mn></msub></mfrac></math></div>


tags: ['Physics', 'Waves and Sound', 'JEE Main']
source_db: MarksBatch2_P4.db
title:
when-a-string-is-divided-into-three-segments-of-lengths-l-1-l-2-and-l-3-the-fundamental-frequencies-of-these-three-segments-are-v-1-v-2-and-v-3-respec-1

slug:
when-a-string-is-divided-into-three-segments-of-lengths-l-1-l-2-and-l-3-the-fundamental-frequencies-of-these-three-segments-are-v-1-v-2-and-v-3-respec-1-42873

question:
<div class="question">When a string is divided into three segments of lengths $l_1, l_2$ and $l_3$, the fundamental frequencies of these three segments are $v_1$, $v_2$ and $v_3$ respectively. The original fundamental frequency $(v)$ of the string is</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">$\sqrt{v}=\sqrt{v_1}+\sqrt{v_2}+\sqrt{v_3}$</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">$v=v_1+v_2+v_3$</span> </li><li class="correct"> <span class="option-label">C</span> <span class="option-data">$\frac{1}{v}=\frac{1}{v_1}+\frac{1}{v_2}+\frac{1}{v_3}$</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">$\frac{1}{\sqrt{v}}=\frac{1}{\sqrt{v_1}}+\frac{1}{\sqrt{v_2}}+\frac{1}{\sqrt{v_3}}$</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">$\frac{1}{v}=\frac{1}{v_1}+\frac{1}{v_2}+\frac{1}{v_3}$</span> </div>

answer:
<div class="solution">The fundamental frequency of string
<br/>$\begin{aligned}
<br/>v &amp; =\frac{1}{2 l} \sqrt{\frac{T}{m}} \\
<br/>\therefore v_1 l_1 &amp; =v_2 l_2=v_2 l_3=k
<br/>\end{aligned}$
<br/>From Eq. (i)
<br/>$l_1=\frac{k}{v_1}, l_2=\frac{k}{v_2}, l_3=\frac{k}{v_3}$
<br/>Original length
<br/>$\begin{aligned}
<br/>l &amp; =\frac{k}{v} \\
<br/>l &amp; =l_1+l_2+l_3 \\
<br/>\frac{k}{v} &amp; =\frac{k}{v_1}+\frac{k}{v_2}+\frac{k}{v_3} \\
<br/>\frac{1}{v} &amp; =\frac{1}{v_1}+\frac{1}{v_2}+\frac{1}{v_3}
<br/>\end{aligned}$
<br/>Here,
<br/>$\begin{aligned}
<br/>&amp; l=l_1+l_2+l_3 \\
<br/>&amp; \frac{k}{v}=\frac{k}{v_1}+\frac{k}{v_2}+\frac{k}{v_3} \\
<br/>&amp; \frac{1}{v}=\frac{1}{v_1}+\frac{1}{v_2}+\frac{1}{v_3}
<br/>\end{aligned}$</div>


tags: ['Physics', 'Waves and Sound', 'NEET', 'NEET 2012 (Screening)']
source_db: MarksBatch2_P4.db
title:
when-a-string-is-divided-into-three-segments-of-lengths-l-1-l-2-and-l-3-the-fundamental-frequencies-of-these-three-segments-are-v-1-v-2-and-v-3-respec

slug:
when-a-string-is-divided-into-three-segments-of-lengths-l-1-l-2-and-l-3-the-fundamental-frequencies-of-these-three-segments-are-v-1-v-2-and-v-3-respec-71775

question:
<div class="question">When a string is divided into three segments of lengths $l_1, l_2$ and $l_3$, the fundamental frequencies of these three segments are $v_1$, $v_2$ and $v_3$ respectively. The original fundamental frequency $(v)$ of the string is</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">$\sqrt{v}=\sqrt{v_1}+\sqrt{v_2}+\sqrt{v_3}$</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">$v=v_1+v_2+v_3$</span> </li><li class="correct"> <span class="option-label">C</span> <span class="option-data">$\frac{1}{v}=\frac{1}{v_1}+\frac{1}{v_2}+\frac{1}{v_3}$</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">$\frac{1}{\sqrt{v}}=\frac{1}{\sqrt{v_1}}+\frac{1}{\sqrt{v_2}}+\frac{1}{\sqrt{v_3}}$</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">$\frac{1}{v}=\frac{1}{v_1}+\frac{1}{v_2}+\frac{1}{v_3}$</span> </div>

answer:
<div class="solution">The fundamental frequency of string
<br/>$\begin{aligned}
<br/>v &amp; =\frac{1}{2 l} \sqrt{\frac{T}{m}} \\
<br/>\therefore v_1 l_1 &amp; =v_2 l_2=v_2 l_3=k
<br/>\end{aligned}$
<br/>From Eq. (i)
<br/>$l_1=\frac{k}{v_1}, l_2=\frac{k}{v_2}, l_3=\frac{k}{v_3}$
<br/>Original length
<br/>$\begin{aligned}
<br/>l &amp; =\frac{k}{v} \\
<br/>l &amp; =l_1+l_2+l_3 \\
<br/>\frac{k}{v} &amp; =\frac{k}{v_1}+\frac{k}{v_2}+\frac{k}{v_3} \\
<br/>\frac{1}{v} &amp; =\frac{1}{v_1}+\frac{1}{v_2}+\frac{1}{v_3}
<br/>\end{aligned}$
<br/>Here,
<br/>$\begin{aligned}
<br/>&amp; l=l_1+l_2+l_3 \\
<br/>&amp; \frac{k}{v}=\frac{k}{v_1}+\frac{k}{v_2}+\frac{k}{v_3} \\
<br/>&amp; \frac{1}{v}=\frac{1}{v_1}+\frac{1}{v_2}+\frac{1}{v_3}
<br/>\end{aligned}$</div>


tags: ['Physics', 'Waves and Sound', 'MHT CET', 'MHT CET 2023 (09 May Shift 1)']
source_db: MarksBatch2_P4.db
title:
when-a-string-of-length-l-is-divided-into-three-segments-of-length-l-1-l-2-and-l-3-the-fundamental-frequencies-of-three-segments-are-n-1-n-2-and-n-3-r

slug:
when-a-string-of-length-l-is-divided-into-three-segments-of-length-l-1-l-2-and-l-3-the-fundamental-frequencies-of-three-segments-are-n-1-n-2-and-n-3-r-56261

question:
<div class="question">When a string of length ' $l$ ' is divided into three segments of length $l_1, l_2$ and $l_3$. The fundamental frequencies of three segments are $\mathrm{n}_1, \mathrm{n}_2$ and $\mathrm{n}_3$ respectively. The original fundamental frequency ' $n$ ' of the string is</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">$\mathrm{n}=\mathrm{n}_1+\mathrm{n}_2+\mathrm{n}_3$</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">$\sqrt{\mathrm{n}}=\sqrt{\mathrm{n}_1}+\sqrt{\mathrm{n}_2}+\sqrt{\mathrm{n}_3}$</span> </li><li class="correct"> <span class="option-label">C</span> <span class="option-data">$\frac{1}{\mathrm{n}}=\frac{1}{\mathrm{n}_1}+\frac{1}{\mathrm{n}_2}+\frac{1}{\mathrm{n}_3}$</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">$\frac{1}{\sqrt{\mathrm{n}}}=\frac{1}{\sqrt{\mathrm{n}_1}}+\frac{1}{\sqrt{\mathrm{n}_2}}+\frac{1}{\sqrt{\mathrm{n}_3}}$</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">$\frac{1}{\mathrm{n}}=\frac{1}{\mathrm{n}_1}+\frac{1}{\mathrm{n}_2}+\frac{1}{\mathrm{n}_3}$</span> </div>

answer:
<div class="solution">The fundamental frequency of a string is given by<br/>Given: $l=l_1+l_2+l_3$... (i)<br/>$\mathrm{n}=\frac{1}{2 l} \sqrt{\frac{\mathrm{T}}{\mathrm{m}}}$<br/>$\Rightarrow \mathrm{n} \propto \frac{1}{l}$ or $\mathrm{n} l=\mathrm{k}$<br/>$\therefore \quad l_1=\frac{\mathrm{k}}{\mathrm{n}_1}, l_2=\frac{\mathrm{k}}{\mathrm{n}_2}$ and $l_3=\frac{\mathrm{k}}{\mathrm{n} 3}$... (ii)<br/>$\therefore \quad$ Original length $l=\frac{\mathrm{k}}{\mathrm{n}}$... (iii)<br/>Putting eq (ii) and (iii) into eq (i)<br/>$\frac{\mathrm{k}}{\mathrm{n}}=\frac{\mathrm{k}}{\mathrm{n}_1}+\frac{\mathrm{k}}{\mathrm{n}_2}+\frac{\mathrm{k}}{\mathrm{n}_3}$<br/>$\therefore \quad \frac{1}{n}=\frac{1}{n_1}+\frac{1}{n_2}+\frac{1}{n_3}$</div>


tags: ['Biology', 'Sexual Reproduction in Flowering Plants', 'NEET']
source_db: MarksBatch2_P4.db
title:
when-a-tetraploid-individual-is-crossed-with-another-individual-it-produces-triploid-embryo-5n-endosperm-and-4n-fruit-in-this-cross-the-male-individua

slug:
when-a-tetraploid-individual-is-crossed-with-another-individual-it-produces-triploid-embryo-5n-endosperm-and-4n-fruit-in-this-cross-the-male-individua-43767

question:
<div class="question">When a tetraploid individual is crossed with another individual it produces triploid embryo, 5n endosperm and 4n fruit. In this cross, the male individual is:</div>

options:
<ul class="options"> <li class="correct"> <span class="option-label">A</span> <span class="option-data">Diploid</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">Tetraploid</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">2n or 4n</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">None of these</span> </li> </ul>

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

answer:
<div class="solution">When Tetraploid female is crossed with diploid male then <br/><br/>Diploid male  <math><mfenced separators="|"><mrow><mn>2</mn><mi mathvariant="normal">n</mi></mrow></mfenced></math> - Microspore mother cell  <math><mfenced separators="|"><mrow><mn>2</mn><mi mathvariant="normal">n</mi></mrow></mfenced></math> - Pollen grain  <math><mo>(</mo><mi mathvariant="normal">n</mi><mo>)</mo></math> -Male gamete  <math><mfenced separators="|"><mrow><mi mathvariant="normal">n</mi></mrow></mfenced></math> <br/><br/>Tetraploid female  <math><mfenced separators="|"><mrow><mn>4</mn><mi mathvariant="normal">n</mi></mrow></mfenced></math> - Megaspore mother cell (4n)- Megaspore  <math><mfenced separators="|"><mrow><mn>2</mn><mi mathvariant="normal">n</mi></mrow></mfenced></math> - Embryo sac  <math><mfenced separators="|"><mrow><mn>2</mn><mi mathvariant="normal">n</mi></mrow></mfenced></math> <br/><br/>Embryo = Male gamete + Female gamete <math><mi mathvariant="normal">Â </mi><mo>=</mo><mi mathvariant="normal">n</mi><mo>+</mo><mn>2</mn><mi mathvariant="normal">n</mi><mo>=</mo><mn>3</mn><mi mathvariant="normal">n</mi></math> <br/><br/>Endosperm = Male gamete + Secondary nucleus  <math><mo>=</mo><mi mathvariant="normal">n</mi><mo>+</mo><mn>4</mn><mi mathvariant="normal">n</mi><mo>=</mo><mn>5</mn><mi mathvariant="normal">n</mi></math> <br/><br/>Fruit is developed by ovary which is sporophytic in nature. 4n ploidy is present in ovary so fruit has also 4n ploidy.</div>


tags: ['Physics', 'Oscillations', 'JEE Main']
source_db: MarksBatch2_P4.db
title:
when-a-wave-travels-in-a-medium-the-particle-displacement-is-given-by-the-equation-y-a-sin-2-b-t-c-x-where-a-b-and-c-are-constant-the-maximum-particle

slug:
when-a-wave-travels-in-a-medium-the-particle-displacement-is-given-by-the-equation-y-a-sin-2-b-t-c-x-where-a-b-and-c-are-constant-the-maximum-particle-96049

question:
<div class="question">When a wave travels in a medium, the particle displacement is given by the equation <math><mi>Y</mi><mo>=</mo><mi>a</mi><mrow><mrow><mi mathvariant="normal">sin</mi></mrow><mo>â¡</mo><mrow><mn>2</mn><mi>Ï</mi><mfenced separators="|"><mrow><mi>b</mi><mi>t</mi><mo>-</mo><mi>c</mi><mi>x</mi></mrow></mfenced></mrow></mrow></math> where, <math><mi>a</mi><mo>,</mo><mi> </mi><mi>b</mi></math> and <math><mi>c</mi></math> are constant. The maximum particle velocity will be twice the wave velocity, if</div>

options:
<ul class="options"> <li class="correct"> <span class="option-label">A</span> <span class="option-data"><math><mi>a</mi><mi>c</mi><mo>=</mo><mfrac><mrow><mn>1</mn></mrow><mrow><mi>Ï</mi></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">B</span> <span class="option-data"><math><mi>a</mi><mi>c</mi><mo>=</mo><mi>Ï</mi></math></span> </li><li class=""> <span class="option-label">C</span> <span class="option-data"><math><mi>b</mi><mo>=</mo><mi>a</mi><mi>c</mi></math></span> </li><li class=""> <span class="option-label">D</span> <span class="option-data"><math><mi>b</mi><mo>=</mo><mfrac><mrow><mn>1</mn></mrow><mrow><mi>a</mi><mi>c</mi></mrow></mfrac></math></span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value"><math><mi>a</mi><mi>c</mi><mo>=</mo><mfrac><mrow><mn>1</mn></mrow><mrow><mi>Ï</mi></mrow></mfrac></math></span> </div>

answer:
<div class="solution">Given, <math><mi>Y</mi><mo>=</mo><mi>a</mi><mrow><mrow><mi mathvariant="normal">sin</mi></mrow><mo>â¡</mo><mrow><mn>2</mn><mi>Ï</mi><mfenced separators="|"><mrow><mi>b</mi><mi>t</mi><mo>-</mo><mi>c</mi><mi>x</mi></mrow></mfenced></mrow></mrow></math>    ...(i)<br/><br/>and standard form <math><mi>Y</mi><mo>=</mo><mi>A</mi><mrow><mrow><mi mathvariant="normal">sin</mi></mrow><mo>â¡</mo><mrow><mfenced separators="|"><mrow><mi>Ï</mi><mi>t</mi><mo>-</mo><mi>k</mi><mi>x</mi></mrow></mfenced></mrow></mrow></math> <br/><br/>Thus, we have <br/><br/> <math><mi>Ï</mi><mo>=</mo><mn>2</mn><mi>Ï</mi><mi>b</mi></math>  and  <math><mi>K</mi><mo>=</mo><mn>2</mn><mi>Ï</mi><mi>c</mi></math> <br/><br/>or <math><mfrac><mrow><mn>2</mn><mi>Ï</mi></mrow><mrow><mi>Î»</mi></mrow></mfrac><mo>=</mo><mn>2</mn><mi>Ï</mi><mi>c</mi><mo>â</mo><mi>c</mi><mo>=</mo><mfrac><mrow><mn>1</mn></mrow><mrow><mi>Î»</mi></mrow></mfrac></math> <br/><br/> <math><mo>â´</mo><mi>Â </mi></math> Speed of wave,<br/><br/> <math><mi>v</mi><mo>=</mo><mfrac><mrow><mi>Ï</mi></mrow><mrow><mi>K</mi></mrow></mfrac><mo>=</mo><mfrac><mrow><mn>2</mn><mi>Ï</mi><mi>b</mi></mrow><mrow><mn>2</mn><mi>Ï</mi><mi>c</mi></mrow></mfrac><mo>=</mo><mfrac><mrow><mi>b</mi></mrow><mrow><mi>c</mi></mrow></mfrac></math> <br/><br/>Differentiating Equation (i) w.r.t.t, we get<br/><br/> <math><mfrac><mrow><mi>d</mi><mi>Y</mi></mrow><mrow><mi>d</mi><mi>t</mi></mrow></mfrac><mo>=</mo></math>  Speed of particle,<br/><br/> <math><msub><mrow><mi>v</mi></mrow><mrow><mi>p</mi></mrow></msub><mo>=</mo><mi>a</mi><mrow><mrow><mi mathvariant="normal">cos</mi></mrow><mo>â¡</mo><mrow><mn>2</mn><mi>Ï</mi><mfenced separators="|"><mrow><mi>b</mi><mi>t</mi><mo>-</mo><mi>c</mi><mi>x</mi></mrow></mfenced><mo>⋅</mo><mn>2</mn><mi>Ï</mi><mi>b</mi></mrow></mrow></math> <br/><br/> <math><msub><mrow><mi>v</mi></mrow><mrow><mi>p</mi></mrow></msub><mo>=</mo><mn>2</mn><mi>Ï</mi><mi>a</mi><mi>b</mi><mrow><mrow><mi mathvariant="normal">cos</mi></mrow><mo>â¡</mo><mrow><mn>2</mn><mi>Ï</mi><mfenced separators="|"><mrow><mi>b</mi><mi>t</mi><mo>-</mo><mi>c</mi><mi>x</mi></mrow></mfenced></mrow></mrow></math> <br/><br/>For <math><msub><mrow><mi>v</mi></mrow><mrow><msub><mrow><mi>p</mi></mrow><mrow><mi mathvariant="normal">m</mi><mi mathvariant="normal">a</mi><mi mathvariant="normal">x</mi></mrow></msub></mrow></msub><mo>=</mo><mn>2</mn><mi>Ï</mi><mi>a</mi><mi>b</mi></math> <br/><br/>According to the question's condition,<br/><br/> <math><msub><mrow><mi>v</mi></mrow><mrow><msub><mrow><mi>p</mi></mrow><mrow><mi mathvariant="normal">m</mi><mi mathvariant="normal">a</mi><mi mathvariant="normal">x</mi></mrow></msub></mrow></msub><mo>=</mo><mn>2</mn><mi>v</mi></math> <br/><br/> <math><mo>â</mo><mn>2</mn><mi>Ï</mi><mi>a</mi><mi>b</mi><mo>=</mo><mfrac><mrow><mn>2</mn><mo>⋅</mo><mi>b</mi></mrow><mrow><mi>c</mi></mrow></mfrac></math>   (Putting values)<br/><br/> <math><mo>â</mo><mi>Ï</mi><mi>a</mi><mo>=</mo><mfrac><mrow><mn>1</mn></mrow><mrow><mi>c</mi></mrow></mfrac></math>  or  <math><mi>a</mi><mi>c</mi><mo>=</mo><mfrac><mrow><mn>1</mn></mrow><mrow><mi>Ï</mi></mrow></mfrac></math></div>


title: when-alkyl-halide-is-boiled-with-large-excess-of-alcoholic-ammonia-it-forms
slug: when-alkyl-halide-is-boiled-with-large-excess-of-alcoholic-ammonia-it-forms-25998
tags: ['Chemistry', 'Haloalkanes and Haloarenes', 'MHT CET', 'MHT CET 2020 (12 Oct Shift 1)']
source_db: MarksBatch2_P4.db
question:
<div class="question">When alkyl halide is boiled with large excess of alcoholic ammonia it forms</div>

options:
<ul class="options"> <li class="correct"> <span class="option-label">A</span> <span class="option-data">primary amine</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">tertiary amine</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">secondary amine</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">quaternary ammonium salt</span> </li> </ul>

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

answer:
<div class="solution"><img src="https://cdn-question-pool.getmarks.app/pyq/mht_cet/uQOQkzWAtBeU9zgawUfHTyYrQ91ubk07dkt3z8CphFk.original.fullsize.png"/></div>


title: when-an-aldehyde-reacts-with-a-grignard-reagent-what-type-of-alcohol-is-typically-formed
slug: when-an-aldehyde-reacts-with-a-grignard-reagent-what-type-of-alcohol-is-typically-formed-86092
tags: ['Chemistry', 'Alcohols Phenols and Ethers', 'NEET']
answer: <div class="solution">Aldehydes react to form secondary alcohols.</div>
source_db: MarksBatch2_P4.db
question:
<div class="question">When an aldehyde reacts with a Grignard reagent, what type of alcohol is typically formed?</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">Primary alcohol</span> </li><li class="correct"> <span class="option-label">B</span> <span class="option-data">Secondary 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">Tertiary alcohol</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">Quaternary alcohol</span> </li> </ul>


tags: ['Physics', 'Waves and Sound', 'MHT CET', 'MHT CET 2016']
source_db: MarksBatch2_P4.db
title:
when-an-open-pipe-is-closed-from-one-end-then-the-third-overtone-of-the-closed-pipe-is-higher-in-frequency-by-150-hz-than-the-second-overtone-of-an-op-1

slug:
when-an-open-pipe-is-closed-from-one-end-then-the-third-overtone-of-the-closed-pipe-is-higher-in-frequency-by-150-hz-than-the-second-overtone-of-an-op-1-41732

question:
<div class="question">When an open pipe is closed from one end then the third overtone of the closed pipe is higher in frequency by <math xmlns="http://www.w3.org/1998/Math/MathML"><mn>150</mn><mo> </mo><mi>Hz</mi></math> than the second overtone of an open pipe. The fundamental frequency of the open-end pipe will be</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"><mn>75</mn><mo> </mo><mi>Hz</mi></math><div id="gtx-trans" style="position: absolute; left: 63px; top: 37.6667px;"><div class="gtx-trans-icon"> </div></div></span> </li><li class=""> <span class="option-label">B</span> <span class="option-data"><math xmlns="http://www.w3.org/1998/Math/MathML"><mn>150</mn><mo> </mo><mi>Hz</mi></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>225</mn><mo> </mo><mi>Hz</mi></math></span> </li><li class="correct"> <span class="option-label">D</span> <span class="option-data"><math xmlns="http://www.w3.org/1998/Math/MathML"><mn>300</mn><mo> </mo><mi>Hz</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 xmlns="http://www.w3.org/1998/Math/MathML"><mn>300</mn><mo> </mo><mi>Hz</mi></math></span> </div>

answer:
<div class="solution">Let <math><msub><mrow><mi>f</mi></mrow><mrow><mn>0</mn></mrow></msub><mo>=</mo><mfrac><mrow><msub><mrow><mi>v</mi></mrow><mrow><mn>0</mn></mrow></msub></mrow><mrow><mn>2</mn><mi>L</mi></mrow></mfrac></math> be the fundamental frequency of the open pipe<br/><math><mo>â´</mo><mi> </mi><mi> </mi></math> is second overtone is <math><mrow><mn>3</mn></mrow><mrow></mrow><msub><mrow><mi>f</mi></mrow><mrow><mn>0</mn></mrow></msub><mo>=</mo><mfrac><mrow><mn>3</mn><msub><mrow><mi>v</mi></mrow><mrow><mn>0</mn></mrow></msub></mrow><mrow><mn>2</mn><mi>L</mi></mrow></mfrac></math><br/>Let <math><mi>f</mi><mo>=</mo><mfrac><mrow><msub><mrow><mi>v</mi></mrow><mrow><mn>0</mn></mrow></msub></mrow><mrow><mn>4</mn><mi>L</mi></mrow></mfrac></math> be the fundamental frequency of close pipe.<br/>And third overtone of the organ pipe closed at one end only is, <math><msub><mrow><mfenced separators="|"><mrow><msub><mrow><mi>f</mi></mrow><mrow><mn>3</mn></mrow></msub></mrow></mfenced></mrow><mrow><mi mathvariant="normal">c</mi><mi mathvariant="normal">l</mi><mi mathvariant="normal">o</mi><mi mathvariant="normal">s</mi><mi mathvariant="normal">e</mi><mi mathvariant="normal">d</mi></mrow></msub><mi mathvariant="normal"> </mi><mo>=</mo><mfrac><mrow><mn>7</mn></mrow><mrow><mn>4</mn></mrow></mfrac><mi> </mi><mfrac><mrow><msub><mrow><mi>v</mi></mrow><mrow><mn>0</mn></mrow></msub></mrow><mrow><mi>L</mi></mrow></mfrac></math><br/>As given <math><mfrac><mrow><mn>7</mn><msub><mrow><mi>v</mi></mrow><mrow><mn>0</mn></mrow></msub></mrow><mrow><mn>4</mn><mi>L</mi></mrow></mfrac><mo>-</mo><mfrac><mrow><mn>3</mn><msub><mrow><mi>v</mi></mrow><mrow><mn>0</mn></mrow></msub></mrow><mrow><mn>2</mn><mi>L</mi></mrow></mfrac><mo>=</mo><mn>150</mn></math><br/><math><mfenced separators="|"><mrow><mfrac><mrow><mn>7</mn></mrow><mrow><mn>4</mn></mrow></mfrac><mo>-</mo><mfrac><mrow><mn>6</mn></mrow><mrow><mn>4</mn></mrow></mfrac></mrow></mfenced><mi> </mi><mfrac><mrow><msub><mrow><mi>v</mi></mrow><mrow><mn>0</mn></mrow></msub></mrow><mrow><mi>L</mi></mrow></mfrac><mo>=</mo><mn>150</mn></math><br/><math><mo>â´</mo><mi> </mi><mfrac><mrow><msub><mrow><mi>v</mi></mrow><mrow><mn>0</mn></mrow></msub></mrow><mrow><mn>4</mn><mi>L</mi></mrow></mfrac><mo>=</mo><mn>150</mn></math><br/><math><mfrac><mrow><msub><mrow><mi>v</mi></mrow><mrow><mn>0</mn></mrow></msub></mrow><mrow><mn>2</mn><mi>L </mi></mrow></mfrac><mo>= 300 Hz</mo></math></div>


tags: ['Physics', 'Wave Optics', 'NEET']
source_db: MarksBatch2_P4.db
title:
when-an-open-pipe-is-closed-from-one-end-then-the-third-overtone-of-the-closed-pipe-is-higher-in-frequency-by-150-hz-than-the-second-overtone-of-an-op

slug:
when-an-open-pipe-is-closed-from-one-end-then-the-third-overtone-of-the-closed-pipe-is-higher-in-frequency-by-150-hz-than-the-second-overtone-of-an-op-54205

question:
<div class="question">When an open pipe is closed from one end then the third overtone of the closed pipe is higher in frequency by <math xmlns="http://www.w3.org/1998/Math/MathML"><mn>150</mn><mo> </mo><mi>Hz</mi></math> than the second overtone of an open pipe. The fundamental frequency of the open-end pipe will be</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"><mn>75</mn><mo> </mo><mi>Hz</mi></math><div id="gtx-trans" style="position: absolute; left: 63px; top: 37.6667px;"><div class="gtx-trans-icon"> </div></div></span> </li><li class=""> <span class="option-label">B</span> <span class="option-data"><math xmlns="http://www.w3.org/1998/Math/MathML"><mn>150</mn><mo> </mo><mi>Hz</mi></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>225</mn><mo> </mo><mi>Hz</mi></math></span> </li><li class="correct"> <span class="option-label">D</span> <span class="option-data"><math xmlns="http://www.w3.org/1998/Math/MathML"><mn>300</mn><mo> </mo><mi>Hz</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 xmlns="http://www.w3.org/1998/Math/MathML"><mn>300</mn><mo> </mo><mi>Hz</mi></math></span> </div>

answer:
<div class="solution">Let <math><msub><mrow><mi>f</mi></mrow><mrow><mn>0</mn></mrow></msub><mo>=</mo><mfrac><mrow><msub><mrow><mi>v</mi></mrow><mrow><mn>0</mn></mrow></msub></mrow><mrow><mn>2</mn><mi>L</mi></mrow></mfrac></math> be the fundamental frequency of the open pipe<br/><br/><math><mo>â´</mo><mi> </mi><mi> </mi></math> is second overtone is <math><mrow><mn>3</mn></mrow><mrow></mrow><msub><mrow><mi>f</mi></mrow><mrow><mn>0</mn></mrow></msub><mo>=</mo><mfrac><mrow><mn>3</mn><msub><mrow><mi>v</mi></mrow><mrow><mn>0</mn></mrow></msub></mrow><mrow><mn>2</mn><mi>L</mi></mrow></mfrac></math><br/><br/>Let <math><mi>f</mi><mo>=</mo><mfrac><mrow><msub><mrow><mi>v</mi></mrow><mrow><mn>0</mn></mrow></msub></mrow><mrow><mn>4</mn><mi>L</mi></mrow></mfrac></math> be the fundamental frequency of close pipe.<br/><br/>And third overtone of the organ pipe closed at one end only is, <math><msub><mrow><mfenced separators="|"><mrow><msub><mrow><mi>f</mi></mrow><mrow><mn>3</mn></mrow></msub></mrow></mfenced></mrow><mrow><mi mathvariant="normal">c</mi><mi mathvariant="normal">l</mi><mi mathvariant="normal">o</mi><mi mathvariant="normal">s</mi><mi mathvariant="normal">e</mi><mi mathvariant="normal">d</mi></mrow></msub><mi mathvariant="normal"> </mi><mo>=</mo><mfrac><mrow><mn>7</mn></mrow><mrow><mn>4</mn></mrow></mfrac><mi> </mi><mfrac><mrow><msub><mrow><mi>v</mi></mrow><mrow><mn>0</mn></mrow></msub></mrow><mrow><mi>L</mi></mrow></mfrac></math><br/><br/>As given <math><mfrac><mrow><mn>7</mn><msub><mrow><mi>v</mi></mrow><mrow><mn>0</mn></mrow></msub></mrow><mrow><mn>4</mn><mi>L</mi></mrow></mfrac><mo>-</mo><mfrac><mrow><mn>3</mn><msub><mrow><mi>v</mi></mrow><mrow><mn>0</mn></mrow></msub></mrow><mrow><mn>2</mn><mi>L</mi></mrow></mfrac><mo>=</mo><mn>150</mn></math><br/><br/><math><mfenced separators="|"><mrow><mfrac><mrow><mn>7</mn></mrow><mrow><mn>4</mn></mrow></mfrac><mo>-</mo><mfrac><mrow><mn>6</mn></mrow><mrow><mn>4</mn></mrow></mfrac></mrow></mfenced><mi> </mi><mfrac><mrow><msub><mrow><mi>v</mi></mrow><mrow><mn>0</mn></mrow></msub></mrow><mrow><mi>L</mi></mrow></mfrac><mo>=</mo><mn>150</mn></math><br/><br/><math><mo>â´</mo><mi> </mi><mfrac><mrow><msub><mrow><mi>v</mi></mrow><mrow><mn>0</mn></mrow></msub></mrow><mrow><mn>4</mn><mi>L</mi></mrow></mfrac><mo>=</mo><mn>150</mn></math><br/><br/><math><mfrac><mrow><msub><mrow><mi>v</mi></mrow><mrow><mn>0</mn></mrow></msub></mrow><mrow><mn>2</mn><mi>L </mi></mrow></mfrac><mo>= 300 Hz</mo></math></div>


tags: ['Biology', 'Plant Kingdom']
options: None
correct_option: None
source_db: MarksBatch2_P4.db
title:
when-and-where-does-reduction-division-take-place-in-the-life-cycle-of-a-liverwort-a-moss-a-fern-a-gymnosperm-and-an-angiosperm

slug:
when-and-where-does-reduction-division-take-place-in-the-life-cycle-of-a-liverwort-a-moss-a-fern-a-gymnosperm-and-an-angiosperm-59713

question:
<div class="question">When and where does reduction division take place in the life cycle of a liverwort, a moss, a fern, a gymnosperm and an angiosperm?</div>

answer:
<div class="solution">1. Liverwort-The main part of the body of liverwort is thalloid. Haploid gametes are produced from the male and female sex organs gamets fuses to form zygote. Zygote develops in the form of sporophytes. These sporophytes are further differentiated into foot, seta and capsule. As a result of reduction division many haploid spores are produced in capsule.<br/>II. Moss - In the first stage in moss primary protonema develops into secondary protonema. Both these stages are haploid. Zygote formed by the fusion of gametes further produce sporophytes.<br/>III. Fern-Leaves of sporophyte bear sporangia in which spores are produced by reduction division in meiosis.<br/>IV. Gymnosperm - In microsporophylls and megasporophylls that bear microsporangia and megasporangia respectively, reduction division occurs to produce microspores (pollen grains) and megaspore.<br/>V. Angiosperm - Main part of the body is sporophytic and bears flowers. Reduction division takes place in anthers of stamen i.e. haploid pollen grains and in the ovary of pistil producing eggs.</div>


tags: ['Chemistry', 'Alcohols Phenols and Ethers', 'MHT CET', 'MHT CET 2020 (14 Oct Shift 1)']
source_db: MarksBatch2_P4.db
title:
when-butan-2-ol-is-dehydrated-using-sulphuric-acid-the-concentration-of-acid-and-temperature-needed-respectively-is

slug:
when-butan-2-ol-is-dehydrated-using-sulphuric-acid-the-concentration-of-acid-and-temperature-needed-respectively-is-15251

question:
<div class="question">When Butan - 2 -ol is dehydrated using sulphuric acid, the concentration of acid and temperature needed respectively is</div>

options:
<ul class="options"> <li class="correct"> <span class="option-label">A</span> <span class="option-data">600/0 Conc. and 373 K</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">$200 / 0$ conc. and $373 \mathrm{~K}$</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">$200 / 0$ conc. and $363 \mathrm{~K}$</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">$950 / 0$ conc. and $373 \mathrm{~K}$</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">600/0 Conc. and 373 K</span> </div>

answer:
<div class="solution">When Butan-2-ol is dehydrated using sulphuric acid, the concentration of acid and temperature needed respectively is $\mathrm{6 0 \%}$ cone. and $373 \mathrm{~K}$.<br/>Secondary alcohol $\left(2^{\circ}\right)$ is dehydrated by heating with $60 \% \mathrm{H}_{2} \mathrm{SO}_{4}$ at $373 \mathrm{~K}$.<br/><img src="https://cdn-question-pool.getmarks.app/pyq/mht_cet/o-WHH9oec-nY1BsF8KxWMeI7gugs6slnsl97O4ZkvlI.original.fullsize.png"/></div>


title: when-does-the-clear-boundary-between-the-liquid-and-vapor-phases-disappear
slug: when-does-the-clear-boundary-between-the-liquid-and-vapor-phases-disappear-43258
tags: ['Chemistry', 'States of Matter', 'NEET']
source_db: MarksBatch2_P4.db
question:
<div class="question">When does the clear boundary between the liquid and vapor phases disappear?</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">When the liquid becomes more dense than the vapor</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">When the vapor becomes denser than the liquid</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">When the temperature decreases</span> </li><li class="correct"> <span class="option-label">D</span> <span class="option-data">When the density of the liquid and vapors becomes the same</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">When the density of the liquid and vapors becomes the same</span> </div>

answer:
<div class="solution">The clear boundary between the liquid and vapor phases disappears when the density of the liquid and vapors becomes the same.</div>


title: when-is-the-dehydrogenation-method-suitable-for-preparing-aldehydes-and-ketones
slug: when-is-the-dehydrogenation-method-suitable-for-preparing-aldehydes-and-ketones-50276
tags: ['Chemistry', 'Aldehydes, Ketones and Carboxylic Acids', 'NEET']
source_db: MarksBatch2_P4.db
question:
<div class="question">When is the dehydrogenation method suitable for preparing aldehydes and ketones?</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">When using non-volatile alcohols</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">When using primary alcohols</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">When using secondary alcohols</span> </li><li class="correct"> <span class="option-label">D</span> <span class="option-data">When using volatile alcohols</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">When using volatile alcohols</span> </div>

answer:
<div class="solution">The paragraph mentions that the dehydrogenation method is suitable for volatile alcohols.</div>


title: when-light-propagates-through-a-given-homogeneous-medium-the-velocities-of
slug: when-light-propagates-through-a-given-homogeneous-medium-the-velocities-of-22036
tags: ['Physics', 'Wave Optics', 'KCET', 'KCET 2023']
source_db: MarksBatch2_P4.db
question:
<div class="question">When light propagates through a given homogeneous medium, the velocities of</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">primary wavefront are larger than those of secondary wavelets.</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">primary wavefronts are lesser than those of secondary wavelets.</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">primary wavefronts are greater than or equal to those of secondary wavelets.</span> </li><li class="correct"> <span class="option-label">D</span> <span class="option-data">primary wavefront and wavelets are equal:</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">primary wavefront and wavelets are equal:</span> </div>

answer:
<div class="solution">According to Huygen's principle, in<br/>homogeneous medium, velocity of primary wavefront is equal to velocity of secondary wavelets.</div>


tags: ['Biology', 'Ecosystem', 'NEET', 'NEET 2013 (Karnataka)']
source_db: MarksBatch2_P4.db
title:
when-man-eats-fish-which-feeds-on-zooplanktons-which-have-eaten-small-plants-the-producer-in-this-chain-is

slug:
when-man-eats-fish-which-feeds-on-zooplanktons-which-have-eaten-small-plants-the-producer-in-this-chain-is-68853

question:
<div class="question">When man eats fish which feeds on zooplanktons which have eaten small plants, the producer in this chain is:</div>

options:
<ul class="options"> <li class="correct"> <span class="option-label">A</span> <span class="option-data">small plants</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">fish</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">man</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">zooplankton</span> </li> </ul>

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

answer:
<div class="solution">A food chain is a linear sequence of organisms through which nutrients and energy pass as one organism cats another.<br/>The food chain is represented as:<br/>Small plants $\rightarrow$ zooplanktons $\rightarrow$ Fish $\rightarrow$ Man<br/>Primary Producer $\rightarrow$ Primary consumer $\rightarrow$ Sccondary consumer $\rightarrow$ Tertiary consumer<br/>Related Theory<br/><img src="https://cdn-question-pool.getmarks.app/pyq/neet/UhjLSe6T_76a0hSmHL7uMSx9pIKGIMRFTb6j_jJaRFc.original.fullsize.png"/><br/><img src="https://cdn-question-pool.getmarks.app/pyq/neet/lq21--v62HCr3mY0-cWXf-KWpg_3GMatTSH_AJsgU08.original.fullsize.png"/><br/></div>


tags: ['Physics', 'Waves and Sound', 'MHT CET', 'MHT CET 2020 (16 Oct Shift 1)']
correct_option: <div class="correct-answer"> The correct answer is: <span class="option-value">300Hz</span> </div>
source_db: MarksBatch2_P4.db
title:
when-open-pipe-is-closed-from-one-end-then-third-overtone-of-closed-pipe-is-higher-in-frequency-by-150-hz-than-second-overtone-of-open-pipe-the-fundam

slug:
when-open-pipe-is-closed-from-one-end-then-third-overtone-of-closed-pipe-is-higher-in-frequency-by-150-hz-than-second-overtone-of-open-pipe-the-fundam-63756

question:
<div class="question">When open pipe is closed from one end then third overtone of closed pipe is higher in frequency by $150 \mathrm{~Hz}$ than second overtone of open pipe. The fundamental frequency of open end pipe will be</div>

options:
<ul class="options"> <li class="correct"> <span class="option-label">A</span> <span class="option-data">300Hz</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">500Hz</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">200Hz</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">400Hz</span> </li> </ul>

answer:
<div class="solution">$3^{\mathrm{rd}}$ overtone of closed pipe $=7 \mathrm{n}_{\mathrm{oc}}=\frac{7 \mathrm{v}}{4 \ell}$<br/>$2^{\text {nd }}$ overtone of closed pipe $=3 \mathrm{n}_{00}=\frac{3 \mathrm{v}}{2 \ell}$<br/>Now, $\frac{7 \mathrm{v}}{4 \ell}=\frac{3 \mathrm{v}}{2 \ell}+150$<br/>$\frac{7 v}{4 \ell}-\frac{3 v}{2 \ell}=150$<br/>$\frac{7 v-6 v}{4 \ell}=150$<br/>$\frac{v}{4 \ell}=150$<br/>$\begin{array}{ll}\therefore \quad \ell= &amp; \frac{v}{4 \times 150} \\ \therefore \quad &amp; n_{00}=\frac{v}{2 \ell}=\frac{v \times 4 \times 150}{2 \times v}=300 \mathrm{~Hz}\end{array}$</div>


title: when-power-is-drawn-from-the-secondary-coil-of-the-transformer-the-dynamic-resistance
slug: when-power-is-drawn-from-the-secondary-coil-of-the-transformer-the-dynamic-resistance-13998
tags: ['Physics', 'Alternating Current', 'JIPMER', 'JIPMER 2008']
source_db: MarksBatch2_P4.db
question:
<div class="question">When power is drawn from the secondary coil of the transformer, the dynamic resistance</div>

options:
<ul class="options"> <li class="correct"> <span class="option-label">A</span> <span class="option-data">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">B</span> <span class="option-data">decreases</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">remains unchanged</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">changes erratically</span> </li> </ul>

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

answer:
<div class="solution">When the secondary coil circuit is open, the magnetic flux in the core is produced by the primary current only. When the secondary circuit is closed, the currents in the secondary coil also produce magnetic flux in the core but in opposite direction. This decreases the core flux and hence reduces the back emf produced in the primary coil. The source emf is now in excess of the back emf, more current is drawn in the primary coil. Hence, power factor is no longer zero. The power factor has increased or the phase difference is no longer $90^{\circ}$, ie, phase difference has decreased. Thus, dynamic resistance has increased.</div>


title: when-reaction-is-carried-out-at-standard-states-then-at-the-equilibrium
slug: when-reaction-is-carried-out-at-standard-states-then-at-the-equilibrium-79843
tags: ['Chemistry', 'Thermodynamics (C)', 'AP EAMCET', 'AP EAMCET 2021 (23 Aug Shift 1)']
source_db: MarksBatch2_P4.db
question:
<div class="question">When reaction is carried out at standard states then, at the equilibrium</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">$\Delta H^{\circ}=0$</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">$\Delta S^{\circ}=0$</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">equilibrium constant $(k)=0$</span> </li><li class="correct"> <span class="option-label">D</span> <span class="option-data">equilibrium constant $(k)=1$</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">equilibrium constant $(k)=1$</span> </div>

answer:
<div class="solution">We know,<br/>$$<br/>\Delta G^{\circ}=-R T \ln \frac{[k]}{[q]}<br/>$$<br/>where, $q=$ reaction quotient<br/>$$<br/>k=\text { equilibrium constant. }<br/>$$<br/>$\because$ At equilibrium,<br/>$$<br/>\begin{gathered}<br/>k=q \\<br/>\left.\Delta G^{\circ}=0 \quad \text { \{for standard states }\right\}<br/>\end{gathered}<br/>$$<br/><br/>So, equilibrium constant<br/>$$<br/>k=1 .<br/>$$</div>


tags: ['Biology', 'Anatomy of Flowering Plants', 'NEET']
source_db: MarksBatch2_P4.db
title:
when-secondary-growth-in-thickness-is-initiated-in-a-dicot-root-which-of-the-following-happens-first

slug:
when-secondary-growth-in-thickness-is-initiated-in-a-dicot-root-which-of-the-following-happens-first-16729

question:
<div class="question">When secondary growth in thickness is initiated in a dicot root, which of the following happens first?</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">Anticlinal division occurs so that cambium becomes circular</span> </li><li class="correct"> <span class="option-label">B</span> <span class="option-data">Parenchyma between xylem and phloem becomes meristematic</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">Cambium initial between xylem and phloem divides</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">Pericycle strands outside primary xylem divide</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">Parenchyma between xylem and phloem becomes meristematic</span> </div>

answer:
<div class="solution">When secondary growth in thickness is initiated in a dicot root, parenchyma between xylem and phloem becomes meristematic.<br/><br/>Vascular bundles in dicot root are radial, exarch and mostly triarch Vascular cambium is formed from conjunctive parenchyma cells lying just below each phloem strand. Thus the number of cambium strips formed equals the number of phloem strands. The cells of pericycle lying outside the protoxylem also become meristematic to form part of strips of cambium. These-cambial strips join the first formed cambium strips to form complete but wavy ring of vascular cambium. This cambium ring produces secondary xylem on inner-side and secondary phloem on outer side. In roots, the growth rings are not distinct, because there is no seasonal variation under the soil. From the outer layers of pericycle arises the phellogen which cuts phellem (cork) or the outer side and secondary cortex or phelloderm toward the inner side.</div>


title: when-success-is-not-an-impossible-event-then-the-mean-of-binomial-distribution-is
slug: when-success-is-not-an-impossible-event-then-the-mean-of-binomial-distribution-is-35081
tags: ['Mathematics', 'Probability', 'AP EAMCET', 'AP EAMCET 2022 (06 Jul Shift 2)']
source_db: MarksBatch2_P4.db
question:
<div class="question">When success is not an impossible event, then the mean of Binomial distribution is</div>

options:
<ul class="options"> <li class="correct"> <span class="option-label">A</span> <span class="option-data">always more than its variance</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">always equal to its variance</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">always less than its variance</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">always equal to its standard deviation</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">always more than its variance</span> </div>

answer:
<div class="solution">When success is not an impossible event, then $p \neq 0, q \neq 0$.<br/>Mean $=n p$ and variance $=n p q$<br/>$$<br/>\begin{aligned}<br/>&amp; p, q &lt; 1 \\<br/>&amp; p&gt;p q \\<br/>&amp; n p&gt;n p q<br/>\end{aligned}<br/>$$<br/>Mean &gt; Variance<br/>$\therefore$ Mean is greater than variance.</div>


tags: ['Physics', 'Waves and Sound', 'MHT CET', 'MHT CET 2020 (16 Oct Shift 2)']
correct_option: <div class="correct-answer"> The correct answer is: <span class="option-value">1.0</span> </div>
source_db: MarksBatch2_P4.db
title:
when-tension-t-is-applied-to-a-sonometer-wire-of-length-it-vibrates-with-the-fundamental-frequency-n-keeping-the-experimental-setup-same-when-the-tens

slug:
when-tension-t-is-applied-to-a-sonometer-wire-of-length-it-vibrates-with-the-fundamental-frequency-n-keeping-the-experimental-setup-same-when-the-tens-13754

question:
<div class="question">When tension 'T' is applied to a sonometer wire of length $\ell^{\prime}$, it vibrates with the fundamental frequency 'n'. Keeping the experimental setup same, when the tension is increased by 8 newton, the fundamental frequency becomes three times the earlier fundamental frequency (n). The initial tension applied to the wire in newton, was</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">2.0</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">0.5</span> </li><li class="correct"> <span class="option-label">C</span> <span class="option-data">1.0</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">2.5</span> </li> </ul>

answer:
<div class="solution">(C)<br/>$\mathrm{n}=\frac{1}{2 \ell} \sqrt{\frac{\mathrm{T}}{\mathrm{m}}}$<br/>$3 \mathrm{n}=\frac{1}{2 \ell} \sqrt{\frac{\mathrm{T}+8}{\mathrm{~m}}}$<br/>$\therefore \frac{\mathrm{n}}{3 \mathrm{n}}=\sqrt{\frac{\mathrm{T}}{\mathrm{T}+8}}$<br/>$\frac{\mathrm{n}^{2}}{9 \mathrm{n}^{2}}=\frac{\mathrm{T}}{\mathrm{T}+8}$<br/>$\therefore \mathrm{T}+8=9 \mathrm{~T} \Rightarrow 8 \mathrm{~T}=8 \mathrm{~N}$<br/>$\therefore 1 \mathrm{~N}$</div>


tags: ['Physics', 'Waves and Sound', 'MHT CET', 'MHT CET 2022 (05 Aug Shift 2)']
source_db: MarksBatch2_P4.db
title:
when-tension-t-is-applied-to-a-sonometer-wire-of-length-l-it-vibrates-with-the-fundamental-frequency-n-keeping-the-setup-same-when-the-tension-is-incr

slug:
when-tension-t-is-applied-to-a-sonometer-wire-of-length-l-it-vibrates-with-the-fundamental-frequency-n-keeping-the-setup-same-when-the-tension-is-incr-78642

question:
<div class="question">When tension ' $\mathrm{T}$ ' is applied to a sonometer wire of length ' $\mathrm{l}$ ' it vibrates with the fundamental frequency ' $n$ '. Keeping the setup same, when the tension is increased by $8 \mathrm{~N}$, the fundamental frequency becomes three times the earlier. The initial tension applied to the wire was</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">$2 \mathrm{~N}$</span> </li><li class="correct"> <span class="option-label">B</span> <span class="option-data">$0.5 \mathrm{~N}$</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">$0.5 \mathrm{~N}$</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">$4 N$</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">$0.5 \mathrm{~N}$</span> </div>

answer:
<div class="solution">The initial fundamental frequency of wire can be written as,<br/><img src="https://cdn-question-pool.getmarks.app/pyq/mht_cet/Qfoap0E3Gnh_B62hq5Sw5W-XyBfQBUaH4fHZRqt3rto.original.fullsize.png"/><br/>On dividing equation ( 2 ) by equation (1), we get<br/>$\begin{aligned} &amp; 3=\sqrt{\frac{T+8 N}{T}} \\ &amp; \Rightarrow 9 T=T+8 N \\ &amp; \Rightarrow T=1 N\end{aligned}$</div>


tags: ['Chemistry', 'Thermodynamics', 'NEET']
answer: <div class="solution">Correct Option is : (B)<br/>No, they do not lie on the P-V-T surface.</div>
source_db: MarksBatch2_P4.db
title:
when-two-cylinders-a-and-b-of-equal-capacity-are-connected-to-each-other-via-a-stopcock-with-a-containing-a-gas-at-standard-temperature-and-pressure-w

slug:
when-two-cylinders-a-and-b-of-equal-capacity-are-connected-to-each-other-via-a-stopcock-with-a-containing-a-gas-at-standard-temperature-and-pressure-w-21236

question:
<div class="question">When two cylinders A and B of equal capacity are connected to each other via a stopcock, with A containing a gas at standard temperature and pressure while B is completely evacuated, and the entire system is thermally insulated, what happens to the intermediate states of the system (before settling to the final equilibrium state) in terms of their location on the P-V-T surface?</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">Yes, they lie on the P-V-T surface.</span> </li><li class="correct"> <span class="option-label">B</span> <span class="option-data">No, they do not lie on the P-V-T surface.</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">Yes, but only momentarily.</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">No, but they return to an equilibrium state eventually.</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">No, they do not lie on the P-V-T surface.</span> </div>


tags: ['Physics', 'Waves and Sound', 'JEE Main', 'JEE Main 2013 (09 Apr Online)']
source_db: MarksBatch2_P4.db
title:
when-two-sound-waves-travel-in-the-same-direction-in-a-medium-the-displacements-of-a-particle-located-at-x-at-time-t-is-given-by-y-1-005-cos-050-x-100

slug:
when-two-sound-waves-travel-in-the-same-direction-in-a-medium-the-displacements-of-a-particle-located-at-x-at-time-t-is-given-by-y-1-005-cos-050-x-100-24774

question:
<div class="question">When two sound waves travel in the same direction in a medium, the displacements of a particle located at ' $x$ ' at time ' $t$ ' is given by :<br/>$\begin{aligned}<br/>&amp; y_1=0.05 \cos (0.50 \pi x-100 \pi t) \\<br/>&amp; y_2=0.05 \cos (0.46 \pi x-92 \pi t)<br/>\end{aligned}$<br/>where $y_1, y_2$ and $x$ are in meters and $t$ in seconds. <br/>The speed of sound in the medium is :</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data"><br/>$92 \mathrm{~m} / \mathrm{s}$<br/></span> </li><li class="correct"> <span class="option-label">B</span> <span class="option-data"><br/>$200 \mathrm{~m} / \mathrm{s}$<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/>$100 \mathrm{~m} / \mathrm{s}$<br/></span> </li><li class=""> <span class="option-label">D</span> <span class="option-data"><br/>$332 \mathrm{~m} / \mathrm{s}$</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value"><br/>$200 \mathrm{~m} / \mathrm{s}$<br/></span> </div>

answer:
<div class="solution">Standard equation<br/>$y(x, t)=A \cos \left(\frac{\omega}{V} x-\omega t\right)$<br/>From any of the displacement equation <br/>Say $\mathrm{y}_1$<br/>$\frac{\omega}{\mathrm{V}}=0.50 \pi$ and $\omega=100 \pi$<br/>$\therefore \frac{100 \pi}{\mathrm{V}}=0.5 \pi$<br/>$\therefore \mathrm{V}=\frac{100 \pi}{0.5 \pi}=200 \mathrm{~m} / \mathrm{s}$</div>


tags: ['Chemistry', 'Alcohols Phenols and Ethers', 'NEET']
source_db: MarksBatch2_P4.db
title:
when-vapours-of-a-primary-or-secondary-alcohol-are-passed-over-heated-copper-at-573-k-what-reaction-takes-place

slug:
when-vapours-of-a-primary-or-secondary-alcohol-are-passed-over-heated-copper-at-573-k-what-reaction-takes-place-98850

question:
<div class="question">When vapours of a primary or secondary alcohol are passed over heated copper at 573 K, what reaction takes place?</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">Dehydration</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">Oxidation to carboxylic acids</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">Oxidation to ketones</span> </li><li class="correct"> <span class="option-label">D</span> <span class="option-data">Dehydrogenation to form aldehydes or ketones</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">Dehydrogenation to form aldehydes or ketones</span> </div>

answer:
<div class="solution">When vapours of a primary or secondary alcohol are passed over heated copper at 573 K, dehydrogenation takes place to form aldehydes or ketones.</div>


title: when-vapours-of-a-secondary-alcohol-is-passed-over-heated-copper-at-573-k-the-product-formed-is
tags: ['Chemistry', 'Aldehydes and Ketones', 'NEET', 'NEET 2019 (Odisha)']
source_db: MarksBatch2_P4.db
slug:
when-vapours-of-a-secondary-alcohol-is-passed-over-heated-copper-at-573-k-the-product-formed-is-56096

question:
<div class="question">When vapours of a secondary alcohol is passed over heated copper at $573 \mathrm{~K}$, the product formed is</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">a carboxylic acid</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">an aldehyde</span> </li><li class="correct"> <span class="option-label">C</span> <span class="option-data">a ketone</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">an alkene</span> </li> </ul>

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

answer:
<div class="solution">When vapours of alcohols are passed over heated copper at $573 \mathrm{~K}$, primary and secondary alcohols undergo dehydrogenation to give aldehydes and ketones, respectively. While tertiary alcohols undergo dehydration to give alkenes.<br/><img src="https://cdn-question-pool.getmarks.app/pyq/neet/kmeCGPRFuZzPHzWp3StNnosUep-ylN6mQPjSoo-TguI.original.fullsize.png"/><br/><br/>Thus, option (3) is correct.</div>


tags: ['Chemistry', 'Alcohols Phenols and Ethers', 'JEE Main']
source_db: MarksBatch2_P4.db
title:
when-vapours-of-an-alcohol-are-passed-over-hot-copper-alcohol-is-converted-into-alkene-quickly-the-alcohol-is

slug:
when-vapours-of-an-alcohol-are-passed-over-hot-copper-alcohol-is-converted-into-alkene-quickly-the-alcohol-is-40060

question:
<div class="question">When vapours of an alcohol are passed over hot copper, alcohol is converted into alkene quickly, the alcohol is</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">Primary</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">Secondary</span> </li><li class="correct"> <span class="option-label">C</span> <span class="option-data">Tertiary</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">None of these</span> </li> </ul>

answer:
<div class="solution"><img alt="" src="https://cdn-question-pool.getmarks.app/nta_abhyas/jee_main/images/hdfgjhdhjdbjf.jpg" style="width: 400px; height: 124px;"/></div>


title: when-we-peel-the-skin-of-a-potato-tuber-we-remove
slug: when-we-peel-the-skin-of-a-potato-tuber-we-remove-91106
question: <div class="question">When we peel the skin of a potato tuber, we remove</div>
tags: ['Biology', 'Anatomy of Flowering Plants']
source_db: MarksBatch2_P4.db
options:
<ul class="options"> <li class="correct"> <span class="option-label">A</span> <span class="option-data"><br/>periderm<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">B</span> <span class="option-data"><br/>epidermis<br/></span> </li><li class=""> <span class="option-label">C</span> <span class="option-data"><br/>cuticle<br/></span> </li><li class=""> <span class="option-label">D</span> <span class="option-data"><br/>sapwood</span> </li> </ul>

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

answer:
<div class="solution">Periderm is a tissue of secondary origin that replaces damaged epidermis. It can be found in underground plant organs. In potato, a model for periderm studies, periderm replaces the epidermis early in tuber development and suberized phellems constitute tuber's skin. Thus when we peel off a potato tuber we will remove periderm.</div>


title: where-can-beehives-be-kept
slug: where-can-beehives-be-kept-12216
question: <div class="question">Where can beehives be kept?</div>
tags: ['Biology', 'Strategies for Enhancement in Food Production', 'NEET']
source_db: MarksBatch2_P4.db
options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">In a forest</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">In a crop field</span> </li><li class="correct"> <span class="option-label">C</span> <span class="option-data">In oneâs courtyard or on the verandah of the house or even on the roof</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">In a lake</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">In oneâs courtyard or on the verandah of the house or even on the roof</span> </div>

answer:
<div class="solution">Beehives can be kept in oneâs courtyard, on the verandah of the house or even on the roof.</div>


title: where-do-the-curves-intersect-consider-the-curves-f-x-x-x-1-and-g-x-2-3-x-2-x-x-0-x-0-2016-i
slug: where-do-the-curves-intersect-consider-the-curves-f-x-x-x-1-and-g-x-2-3-x-2-x-x-0-x-0-2016-i-19006
tags: ['Mathematics', 'Functions', 'NDA', 'NDA 2016 (Phase 1)']
source_db: MarksBatch2_P4.db
question:
<div class="question">Where do the curves intersect?<br/>Consider the curves $\mathrm{f}(\mathrm{x})=\mathrm{x}|\mathrm{x}|-1$ and $\mathrm{g}(\mathrm{x})=\left\{\begin{array}{ll}\frac{3 \mathrm{x}}{2}, &amp; \mathrm{x}&gt;0 \\ 2 \mathrm{x}, &amp; \mathrm{x} \leq 0\end{array} \quad[2016-\mathrm{I}]\right.$</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">$\operatorname{At}(2,3)$ only</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">At $(-1,-2)$ only</span> </li><li class="correct"> <span class="option-label">C</span> <span class="option-data">At $(2,3)$ and $(-1,-2)$</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><li class=""> <span class="option-label">D</span> <span class="option-data">Neither at $(2,3)$ nor at $(-1,-2)$</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">At $(2,3)$ and $(-1,-2)$</span> </div>

answer:
<div class="solution">$f(x)=x|x|-1$<br/>$$<br/>f(x)=\left\{\begin{array}{cc}<br/>x^{2}-1 &amp; x&gt;0 \\<br/>-x^{2}-1 &amp; x \leq 0<br/>\end{array} \quad g(x)=\left\{\begin{array}{cc}<br/>\frac{3 x}{2} &amp; x&gt;0 \\<br/>2 x &amp; x \leq 0<br/>\end{array}\right.\right.<br/>$$<br/><img src="https://cdn-question-pool.getmarks.app/pyq/nda/6HRyYajAoPcFrSA1Cm0EQmazi1C1b9liJWwjyzgKL2g.original.fullsize.png"/><br/><br/>Hence $f(x)$ and $g(x)$ intersects at $(-1,-2)$ and $(2,3)$.</div>


title: where-does-the-initiation-of-lateral-roots-and-vascular-cambium-take-place-during-secondary-growth
tags: ['Biology', 'Anatomy of Flowering Plants', 'NEET']
source_db: MarksBatch2_P4.db
slug:
where-does-the-initiation-of-lateral-roots-and-vascular-cambium-take-place-during-secondary-growth-54694

question:
<div class="question">Where does the initiation of lateral roots and vascular cambium take place during secondary growth?</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">In epiblema</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">In endodermis</span> </li><li class="correct"> <span class="option-label">C</span> <span class="option-data">In pericycle</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">In pith</span> </li> </ul>

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

answer:
<div class="solution">The initiation of lateral roots and vascular cambium during secondary growth takes place in the cells of pericycle.</div>


title: where-is-the-effluent-from-the-secondary-treatment-plant-generally-released
slug: where-is-the-effluent-from-the-secondary-treatment-plant-generally-released-46909
tags: ['Biology', 'Microbes in Human Welfare', 'NEET']
source_db: MarksBatch2_P4.db
question:
<div class="question">Where is the effluent from the secondary treatment plant generally released?</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">Settling tank</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">Aeration tank</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">Anaerobic sludge digesters</span> </li><li class="correct"> <span class="option-label">D</span> <span class="option-data">Natural water bodies like rivers and streams</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">Natural water bodies like rivers and streams</span> </div>

answer:
<div class="solution">The effluent from the secondary treatment plant is generally released into natural water bodies like rivers and streams.</div>


title: which-alcohol-class-reacts-most-slowly-with-lucas-reagent-in-the-lucas-test
slug: which-alcohol-class-reacts-most-slowly-with-lucas-reagent-in-the-lucas-test-42748
tags: ['Chemistry', 'Alcohols Phenols and Ethers', 'NEET']
source_db: MarksBatch2_P4.db
question:
<div class="question">Which alcohol class reacts most slowly with Lucas reagent in the Lucas test?</div>

options:
<ul class="options"> <li class="correct"> <span class="option-label">A</span> <span class="option-data">Primary alcohols</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 alcohols</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">Tertiary alcohols</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">Aromatic alcohols</span> </li> </ul>

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

answer:
<div class="solution">Primary alcohols react most slowly with Lucas reagent in the Lucas test.</div>


title: which-alkali-metal-has-the-highest-reducing-power
slug: which-alkali-metal-has-the-highest-reducing-power-98336
question: <div class="question">Which alkali metal has the highest reducing power?</div>
tags: ['Chemistry', 's Block Elements', 'NEET']
source_db: MarksBatch2_P4.db
options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">Sodium (Na)</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">Potassium (K)</span> </li><li class="correct"> <span class="option-label">C</span> <span class="option-data">Lithium (Li)</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">Rubidium (Rb)</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">Lithium (Li)</span> </div>

answer:
<div class="solution">Among the alkali metals, lithium (Li) has the highest reducing power. This is primarily due to its small ion size, which results in the highest hydration enthalpy and the most negative standard electrode potential (E<sub>o</sub>) among alkali metals, making it the strongest reducing agent.</div>


title: which-amino-acid-does-not-contain-primary-amino-group
slug: which-amino-acid-does-not-contain-primary-amino-group-43807
tags: ['Chemistry', 'Biomolecules', 'NEET']
source_db: MarksBatch2_P4.db
question:
<div class="question">Which <math><mi mathvariant="normal">Î±</mi></math> -amino acid does not contain primary amino group?</div>

options:
<ul class="options"> <li class="correct"> <span class="option-label">A</span> <span class="option-data">Proline</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">Threonine</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">Lysine</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">All of these</span> </li> </ul>

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

answer:
<div class="solution">Proline contains secondary amino group.<br/><img src="https://cdn-question-pool.getmarks.app/nta_abhyas/neet/images/3f9ad2a0-7c5c-4aa1-abbf-8166fc69aae3.png" style="max-width:100%; object-fit:contain"/></div>


title: which-among-following-compounds-is-a-secondary-amine
slug: which-among-following-compounds-is-a-secondary-amine-97128
question: <div class="question">Which among following compounds is a secondary amine?</div>
tags: ['Chemistry', 'General Organic Chemistry', 'MHT CET', 'MHT CET 2021 (24 Sep Shift 1)']
source_db: MarksBatch2_P4.db
options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">hexane-1,6-diamine</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">N,N-Dimethylbenzenamine</span> </li><li class="correct"> <span class="option-label">C</span> <span class="option-data">N-methylbenzenamine</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">Prop-2-en-1 amine</span> </li> </ul>

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

answer:
<div class="solution"><img src="https://cdn-question-pool.getmarks.app/pyq/mht_cet/bhMzsfwbWM-V073CG7AOgWxFyRL5LQzj3aAu0dWMSbQ.original.fullsize.png"/><br/></div>


title: which-among-following-statements-is-not-true-according-to-principles-of-green-chemistry
slug: which-among-following-statements-is-not-true-according-to-principles-of-green-chemistry-62272
tags: ['Chemistry', 'Environmental Chemistry', 'MHT CET', 'MHT CET 2023 (10 May Shift 1)']
source_db: MarksBatch2_P4.db
question:
<div class="question">Which among following statements is NOT true according to principles of green chemistry?</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">In a chemical synthesis the waste product should be zero or minimum.</span> </li><li class="correct"> <span class="option-label">B</span> <span class="option-data">Good atom economy means very few atoms of reactants are incorporated in the product.</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">Only small amounts of unwanted by products are formed.</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">Use of lindane is better than DDT.</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">Good atom economy means very few atoms of reactants are incorporated in the product.</span> </div>

answer:
<div class="solution">Good atom economy means most of the atoms of the reactants are incorporated in the desired products and only small amounts of unwanted byproducts are formed and hence lesser problems of waste disposal.</div>


title: which-among-the-following-decreasing-order-of-boiling-points-is-correct-for-amines
slug: which-among-the-following-decreasing-order-of-boiling-points-is-correct-for-amines-31099
tags: ['Chemistry', 'Amines', 'MHT CET', 'MHT CET 2020 (13 Oct Shift 1)']
source_db: MarksBatch2_P4.db
question:
<div class="question">Which among the following decreasing order of boiling points is correct for amines?</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">Ethyl dimethylamine $&gt;$ Diethylamine $&gt;$ n-Butylamine</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">Diethylamine $&gt;$ Ethyl dimethylamine $&gt;$ n-Butylamine</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">n-Butylamine $&gt;$ Ethyl dimethylamine $&gt;$ Diethylamine</span> </li><li class="correct"> <span class="option-label">D</span> <span class="option-data">n-Butylamine $&gt;$ Diethylamine $&gt;$ Ethyl dimethylamine</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">n-Butylamine $&gt;$ Diethylamine $&gt;$ Ethyl dimethylamine</span> </div>

answer:
<div class="solution">The order of boiling point of amines is as follows: Primary $&gt;$ Secondary $&gt;$ Tertiary</div>


tags: ['Physics', 'Atomic Physics', 'JEE Main']
source_db: MarksBatch2_P4.db
title:
which-among-the-following-expressions-is-the-correct-for-the-magnetic-field-at-the-site-of-the-nucleus-in-a-hydrogen-atom-due-to-the-circular-motion-o

slug:
which-among-the-following-expressions-is-the-correct-for-the-magnetic-field-at-the-site-of-the-nucleus-in-a-hydrogen-atom-due-to-the-circular-motion-o-52434

question:
<div class="question">Which among the following expressions is the correct for the magnetic field at the site of the nucleus in a hydrogen atom due to the circular motion of the electron? Assume that the atom is in its ground state and the expressions are given in terms of the fundamental constants.<br/>
where <math xmlns="http://www.w3.org/1998/Math/MathML"><mi>m</mi></math> = mass of an electron, <math xmlns="http://www.w3.org/1998/Math/MathML"><mi>e</mi></math> = charge of an electron, <math xmlns="http://www.w3.org/1998/Math/MathML"><mi>h</mi></math> = planck's constant)</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"><mfrac><mrow><msub><mi>μ</mi><mn>0</mn></msub><msup><mtext mathvariant="italic">e</mtext><mn>7</mn></msup><mi>π</mi><msup><mtext mathvariant="italic">m</mtext><mn>2</mn></msup></mrow><mrow><mn>8</mn><msubsup><mi>ε</mi><mn>0</mn><mn>3</mn></msubsup><msup><mtext mathvariant="italic">h</mtext><mn>5</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">B</span> <span class="option-data"><math xmlns="http://www.w3.org/1998/Math/MathML"><mfrac><mrow><msub><mi>μ</mi><mn>0</mn></msub><msup><mtext mathvariant="italic">e</mtext><mn>5</mn></msup><mi>π</mi><msup><mtext mathvariant="italic">m</mtext><mn>2</mn></msup></mrow><mrow><mn>8</mn><msubsup><mi>ε</mi><mn>0</mn><mn>3</mn></msubsup><msup><mtext mathvariant="italic">h</mtext><mn>5</mn></msup></mrow></mfrac></math></span> </li><li class=""> <span class="option-label">C</span> <span class="option-data"><math xmlns="http://www.w3.org/1998/Math/MathML"><mfrac><mrow><msub><mi>Î¼</mi><mn>0</mn></msub><msup><mtext mathvariant="italic">e</mtext><mn>5</mn></msup><mi>Ï</mi><msup><mtext mathvariant="italic">m</mtext><mn>2</mn></msup></mrow><mrow><mn>8</mn><msubsup><mi>Îµ</mi><mn>0</mn><mn>3</mn></msubsup><msup><mtext mathvariant="italic">h</mtext><mn>4</mn></msup></mrow></mfrac></math></span> </li><li class=""> <span class="option-label">D</span> <span class="option-data"><math xmlns="http://www.w3.org/1998/Math/MathML"><mfrac><mrow><msub><mi>Î¼</mi><mn>0</mn></msub><msup><mtext mathvariant="italic">e</mtext><mn>7</mn></msup><mi>Ï</mi><msup><mtext mathvariant="italic">m</mtext><mn>2</mn></msup></mrow><mrow><mn>8</mn><msubsup><mi>Îµ</mi><mn>0</mn><mn>3</mn></msubsup><msup><mtext mathvariant="italic">h</mtext><mn>4</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><msub><mi>μ</mi><mn>0</mn></msub><msup><mtext mathvariant="italic">e</mtext><mn>7</mn></msup><mi>π</mi><msup><mtext mathvariant="italic">m</mtext><mn>2</mn></msup></mrow><mrow><mn>8</mn><msubsup><mi>ε</mi><mn>0</mn><mn>3</mn></msubsup><msup><mtext mathvariant="italic">h</mtext><mn>5</mn></msup></mrow></mfrac></math></span> </div>

answer:
<div class="solution">We have<br/><br/>     <math xmlns="http://www.w3.org/1998/Math/MathML"><mfrac><msup><mtext mathvariant="italic">mv</mtext><mn>2</mn></msup><mtext mathvariant="italic">r</mtext></mfrac><mo>=</mo><mfrac><msup><mtext mathvariant="italic">e</mtext><mn>2</mn></msup><mrow><mn>4</mn><mi>π</mi><msub><mi>ε</mi><mn>0</mn></msub><msup><mtext mathvariant="italic">r</mtext><mn>2</mn></msup></mrow></mfrac></math><br/><br/><math xmlns="http://www.w3.org/1998/Math/MathML"><mtext>or, </mtext><mspace mathvariant="italic" width="0.5em"></mspace><msup><mtext mathvariant="italic">v</mtext><mn>2</mn></msup><mtext mathvariant="italic">r</mtext><mo>=</mo><mfrac><msup><mtext>e</mtext><mn>2</mn></msup><mrow><mn>4</mn><mi>π</mi><msub><mi>ε</mi><mn>0</mn></msub><mtext mathvariant="italic">m</mtext></mrow></mfrac></math>             ...(i)<br/><br/>From Bohr's quantization rule, in ground state,<br/><br/><math xmlns="http://www.w3.org/1998/Math/MathML"><mtext mathvariant="italic">vr</mtext><mo>=</mo><mfrac><mtext mathvariant="italic">h</mtext><mrow><mn>2</mn><mi>π</mi><mtext mathvariant="italic">m</mtext></mrow></mfrac><mo>·</mo></math>                          ...(ii)<br/><br/>From (i) and (ii),<br/><br/><math xmlns="http://www.w3.org/1998/Math/MathML"><mtext mathvariant="italic">v</mtext><mo>=</mo><mfrac><msup><mtext mathvariant="italic">e</mtext><mn>2</mn></msup><mrow><mn>2</mn><msub><mi>ε</mi><mn>0</mn></msub><mtext mathvariant="italic">h</mtext></mrow></mfrac></math>                          ...(iii)<br/><br/>and  <math xmlns="http://www.w3.org/1998/Math/MathML"><mtext mathvariant="italic">r</mtext><mo>=</mo><mfrac><mrow><msub><mi>ε</mi><mn>0</mn></msub><msup><mtext mathvariant="italic">h</mtext><mn>2</mn></msup></mrow><mrow><mi>π</mi><msup><mtext mathvariant="italic">me</mtext><mn>2</mn></msup></mrow></mfrac></math>                           ...(iv)<br/><br/>As the electron moves along a circle, it crosses any point on the circle <math xmlns="http://www.w3.org/1998/Math/MathML"><mfrac><mtext mathvariant="italic">v</mtext><mrow><mn>2</mn><mi>π</mi><mtext mathvariant="italic">r</mtext></mrow></mfrac></math> times per unit time. The charge crossing per unit time, that is the current, is <math xmlns="http://www.w3.org/1998/Math/MathML"><mi>i</mi></math> = <math xmlns="http://www.w3.org/1998/Math/MathML"><mfrac><mtext mathvariant="italic">ev</mtext><mrow><mn>2</mn><mi>π</mi><mtext mathvariant="italic">r</mtext></mrow></mfrac></math>. The magnetic field at the centre due to this circular current is<br/><br/>     <math xmlns="http://www.w3.org/1998/Math/MathML"><mtext mathvariant="italic">B</mtext><mo>=</mo><mfrac><mrow><msub><mi>μ</mi><mn>0</mn></msub><mtext mathvariant="italic">i</mtext></mrow><mrow><mn>2</mn><mtext mathvariant="italic">r</mtext></mrow></mfrac><mo>=</mo><mfrac><mrow><msub><mi>μ</mi><mn>0</mn></msub><mtext mathvariant="italic">ev</mtext></mrow><mrow><mn>4</mn><mi>π</mi><msup><mtext mathvariant="italic">r</mtext><mn>2</mn></msup></mrow></mfrac></math><br/><br/>From (iii) and (iv),<br/><br/>             <math xmlns="http://www.w3.org/1998/Math/MathML"><mtext mathvariant="italic">B</mtext><mo>=</mo><mfrac><mrow><msub><mi>μ</mi><mn>0</mn></msub><mtext mathvariant="italic">e</mtext></mrow><mrow><mn>4</mn><mi>π</mi></mrow></mfrac><mfrac><msup><mtext mathvariant="italic">e</mtext><mn>2</mn></msup><mrow><mn>2</mn><msub><mi>ε</mi><mn>0</mn></msub><mtext mathvariant="italic">h</mtext></mrow></mfrac><mo>×</mo><mfrac><mrow><msup><mi>π</mi><mn>2</mn></msup><msup><mtext mathvariant="italic">m</mtext><mn>2</mn></msup><msup><mtext mathvariant="italic">e</mtext><mn>4</mn></msup></mrow><mrow><msubsup><mi>ε</mi><mn>0</mn><mn>2</mn></msubsup><msup><mtext mathvariant="italic">h</mtext><mn>4</mn></msup></mrow></mfrac></math><br/><br/>             <math xmlns="http://www.w3.org/1998/Math/MathML"><mo>=</mo><mfrac><mrow><msub><mi>μ</mi><mn>0</mn></msub><msup><mtext mathvariant="italic">e</mtext><mn>7</mn></msup><mi>π</mi><msup><mtext mathvariant="italic">m</mtext><mn>2</mn></msup></mrow><mrow><mn>8</mn><msubsup><mi>ε</mi><mn>0</mn><mn>3</mn></msubsup><msup><mtext mathvariant="italic">h</mtext><mn>5</mn></msup></mrow></mfrac></math></div>


title: which-among-the-following-has-23-chromosomes
slug: which-among-the-following-has-23-chromosomes-19121
question: <div class="question">Which among the following has 23 chromosomes?</div>
tags: ['Biology', 'Human Reproduction']
source_db: MarksBatch2_P4.db
options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data"><br/>Spermatogonia<br/></span> </li><li class=""> <span class="option-label">B</span> <span class="option-data"><br/>Zygote<br/></span> </li><li class="correct"> <span class="option-label">C</span> <span class="option-data"><br/>Secondary oocyte<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">D</span> <span class="option-data"><br/>Oogonia</span> </li> </ul>

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

answer:
<div class="solution">Secondary oocyte is a product of meiotic division of primary oocyte during oogenesis in the ovary and has 23 chromosomes. Oogenesis is initiated at the foetal ovary in the early embryonic stage of female and a fixed number of oogonia (gamete mother cells) are formed and before the birth of the female child no more oogonia are added after birth.<br/>Spermatogonia is the immature male germ cells that produce sperms. Each spermatogonium is diploid (2n) that contain 46 chromosomes.<br/>The sperms containing haploid nucleus and that of the ovum fuse together to form a diploid $(2 n)$ zygote i.e., 46 chromosomes.<br/>During foetal development, certain cells in the germinal epithelium of the ovary undergo mitotic divisions, producing undifferentiated germ cells called oogonia. The oogonia is diploid ( $2 n)$ and contain 46 chromosomes.</div>


title: which-among-the-following-is-allylic-secondary-alcohol
slug: which-among-the-following-is-allylic-secondary-alcohol-26609
question: <div class="question">Which among the following is allylic secondary alcohol?</div>
tags: ['Chemistry', 'General Organic Chemistry', 'MHT CET', 'MHT CET 2020 (14 Oct Shift 2)']
source_db: MarksBatch2_P4.db
options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">But-2-en-1-ol</span> </li><li class="correct"> <span class="option-label">B</span> <span class="option-data">But-3-en-2-ol</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 -Methyl but-3-en-2-ol</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">Prop-2-en-1-ol</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">But-3-en-2-ol</span> </div>

answer:
<div class="solution">"An allylic alcohol in which the carbon atom that links the double bond to the hydroxy group is also attached to one other carbon and one hydrogen.<br/>A secondary alcohol is a compound in which a hydroxy group, Ã¢â¬âOH, is attached to a saturated carbon atom which has two other carbon atoms attached to it."</div>


title: which-among-the-following-is-most-reactive-via-s-n-2-mechanism
slug: which-among-the-following-is-most-reactive-via-s-n-2-mechanism-10683
tags: ['Chemistry', 'Haloalkanes and Haloarenes', 'AP EAMCET', 'AP EAMCET 2022 (08 Jul Shift 1)']
source_db: MarksBatch2_P4.db
question:
<div class="question">Which among the following is most reactive via $\mathrm{S}_{\mathrm{N}} 2$ mechanism</div>

options:
<ul class="options"> <li class="correct"> <span class="option-label">A</span> <span class="option-data"><img src="https://cdn-question-pool.getmarks.app/pyq/ap_eamcet/VZhRLEuo2INNcgTFPS9wwY5V4CetJ1Ozio3ckthHQUE.original.fullsize.png"/></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"><img src="https://cdn-question-pool.getmarks.app/pyq/ap_eamcet/XwE1IJefaEnS6WQINNme5xkVSZwHUqpMJBQszEGt4H8.original.fullsize.png"/></span> </li><li class=""> <span class="option-label">C</span> <span class="option-data"><img src="https://cdn-question-pool.getmarks.app/pyq/ap_eamcet/cRMP8UJAIeitoqTuy66Vvre60qVzKWRBBpBZ5oJTpg0.original.fullsize.png"/></span> </li><li class=""> <span class="option-label">D</span> <span class="option-data"><img src="https://cdn-question-pool.getmarks.app/pyq/ap_eamcet/etnoWVVt6cvML77R5ne5Q9IqlYAstg_mNxbxIkjVW7w.original.fullsize.png"/></span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value"><img src="https://cdn-question-pool.getmarks.app/pyq/ap_eamcet/VZhRLEuo2INNcgTFPS9wwY5V4CetJ1Ozio3ckthHQUE.original.fullsize.png"/></span> </div>

answer:
<div class="solution">$\mathrm{Br}$ attached to secondary carbon undergoes steric hindrance in order to occur $\mathrm{S}_{\mathrm{N}} 2$ reaction.</div>


title: which-among-the-following-is-most-stable-carbocation
slug: which-among-the-following-is-most-stable-carbocation-63092
question: <div class="question">Which among the following is most stable carbocation</div>
tags: ['Chemistry', 'General Organic Chemistry', 'NEET']
source_db: MarksBatch2_P4.db
options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">iso-propyl</span> </li><li class="correct"> <span class="option-label">B</span> <span class="option-data">Triphenylmethyl cation</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">Ethyl cation</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">t-Butyl cation</span> </li> </ul>

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

answer:
<div class="solution">Stability of carbonium ions. <br/>tertiary alkyl &gt; secondary alkyl &gt; primary alkyl &gt; methyl. <br/>More the number of alkyl groups, the greater the dispersal of positive charge and therefore, more the stability of carbonium ion is observed. <br/><img src="https://cdn-question-pool.getmarks.app/nta_abhyas/neet/images/02a70253-4f55-4593-8702-2896868f0eeb.png" style="width:1.82083in;height:1.16389in"/> <br/>Dispersal of positive charge increases with the increase in the number of benzene ring.</div>


tags: ['Chemistry', 'Amines', 'MHT CET', 'MHT CET 2022 (06 Aug Shift 2)']
source_db: MarksBatch2_P4.db
title:
which-among-the-following-reagents-is-used-to-distinguish-primary-secondary-and-tertiary-amines-according-to-solubility-in-alkaline-medium

slug:
which-among-the-following-reagents-is-used-to-distinguish-primary-secondary-and-tertiary-amines-according-to-solubility-in-alkaline-medium-26718

question:
<div class="question">Which among the following reagents is used to distinguish primary, secondary and tertiary amines according to solubility in alkaline medium?</div>

options:
<ul class="options"> <li class="correct"> <span class="option-label">A</span> <span class="option-data">Benzene sulphonyl chloride</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">Ethylene glycol</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">Iodoform</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">Acetyl chloride</span> </li> </ul>

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

answer:
<div class="solution">Hinsberg reagent: Benzenesulfonyl chloride $\left(\mathrm{C}_6 \mathrm{H}_5 \mathrm{SO}_2 \mathrm{Cl}\right)$<br/><img src="https://cdn-question-pool.getmarks.app/pyq/mht_cet/fODStcvGdFg8ei2g2SqyB1SCcYZSvj2wQKQV0okTmo8.original.fullsize.png"/></div>


title: which-among-the-following-secondary-metabolites-is-a-lectin
slug: which-among-the-following-secondary-metabolites-is-a-lectin-37974
question: <div class="question">Which among the following secondary metabolites is a lectin?</div>
tags: ['Chemistry', 'Biomolecules', 'NEET']
source_db: MarksBatch2_P4.db
options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">Morphine</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">Monoterpene</span> </li><li class="correct"> <span class="option-label">C</span> <span class="option-data">Concanavalin 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">D</span> <span class="option-data">Curcumin</span> </li> </ul>

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

answer:
<div class="solution">Metabolites are substances requires for metabolism. These can be primary or secondary. Primary metabolites are those that are needed for normal growth and functions in our bodies. These are amino acids, lipids carbohydrates, etc. Secondary metabolites are those that are not directly involved in growth or any other function of the body. These are morphine, cellulose, ricin, rubber, vinblastin, codeine, concanavalin etc. Morphine are alkaloids. Cellulose is a polymer and ricin is a toxin. Vinblastin is a drug and concanavalin A is a lectin.</div>


title: which-among-the-following-statements-is-true-about-gammexane
slug: which-among-the-following-statements-is-true-about-gammexane-77334
question: <div class="question">Which among the following statements is TRUE about gammexane?</div>
tags: ['Chemistry', 'Hydrocarbons', 'MHT CET', 'MHT CET 2023 (11 May Shift 1)']
source_db: MarksBatch2_P4.db
options:
<ul class="options"> <li class="correct"> <span class="option-label">A</span> <span class="option-data">It is an isomer of $\mathrm{BHC}$.</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">It is one of the herbicides.</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">It is obtained from benzene by bromination.</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">It is monochloro derivative of benzene.</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">It is an isomer of $\mathrm{BHC}$.</span> </div>

answer:
<div class="solution">The $\gamma$-isomer of benzene hexachloride (BHC), which is used as insecticide, is called as gammexane or lindane.</div>


title: which-among-the-following-statements-of-group1-elements-is-not-true
slug: which-among-the-following-statements-of-group1-elements-is-not-true-45361
question: <div class="question">Which among the following statements of group-1 elements is NOT true?</div>
tags: ['Chemistry', 's Block Elements', 'MHT CET', 'MHT CET 2023 (10 May Shift 1)']
answer: <div class="solution">Std.11|Ch-8|Subtopic-8.2</div>
source_db: MarksBatch2_P4.db
options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">Unipositive ions have inert gas configuration.</span> </li><li class="correct"> <span class="option-label">B</span> <span class="option-data">Compounds of unipositive ions are paramagnetic.</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">These form colourless compounds in +1 state.</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">These have high negative values of standard reduction potential.</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">Compounds of unipositive ions are paramagnetic.</span> </div>


title: which-among-the-following-will-not-liberate-nitrogen-on-reaction-with-nitrous-acid
slug: which-among-the-following-will-not-liberate-nitrogen-on-reaction-with-nitrous-acid-71749
tags: ['Chemistry', 'p Block Elements (Group 15, 16, 17 & 18)', 'COMEDK', 'COMEDK 2022']
source_db: MarksBatch2_P4.db
question:
<div class="question">Which among the following will not liberate nitrogen on reaction with nitrous acid?</div>

options:
<ul class="options"> <li class="correct"> <span class="option-label">A</span> <span class="option-data">dimethylamine</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">2-aminopropane</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">ethylamine</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">methylamine</span> </li> </ul>

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

answer:
<div class="solution">Only aliphatic primary amines can react with nitrous acid to produce alcohol, water and nitrogen gas.<br/>$$<br/>\underset{\text { 1-amine }}{R-\mathrm{NH}_2}+\mathrm{HONO} \stackrel{273-278 \mathrm{~K}}{\longrightarrow} \underset{\text { Alcohol }}{\mathrm{R}-\mathrm{OH}}+\mathrm{N}_2+\mathrm{H}_2 \mathrm{O}<br/>$$<br/>So, dimethylamine which is a secondary amine cannot liberate $\mathrm{N}_2$ with HONO.</div>


title: which-amongst-the-following-is-the-most-stable-carbocation-1
slug: which-amongst-the-following-is-the-most-stable-carbocation-1-95918
question: <div class="question">Which amongst the following is the most stable carbocation?</div>
tags: ['Chemistry', 'General Organic Chemistry', 'NEET', 'NEET 2005']
source_db: MarksBatch2_P4.db
options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data"><img src="https://cdn-question-pool.getmarks.app/pyq/neet/NSYIcZqNPorkq-fhgO-vBTq-qFn_RWt6LEPEFvyWX-I.original.fullsize.png"/><br/></span> </li><li class=""> <span class="option-label">B</span> <span class="option-data"><img src="https://cdn-question-pool.getmarks.app/pyq/neet/J7C3t-omC6ncw_PRrkYlXvxsqODbvSCRVZ783NmubJQ.original.fullsize.png"/><br/></span> </li><li class=""> <span class="option-label">C</span> <span class="option-data"><img src="https://cdn-question-pool.getmarks.app/pyq/neet/vfaTE-nMtix98Us7QGUIewlTgyBF4STINs756EBlZYM.original.fullsize.png"/><br/></span> </li><li class="correct"> <span class="option-label">D</span> <span class="option-data"><img src="https://cdn-question-pool.getmarks.app/pyq/neet/J6QXCYAxhUCKGb6OTRuJyJ2iBZ77bRMD00OWzPRd0JE.original.fullsize.png"/><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> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value"><img src="https://cdn-question-pool.getmarks.app/pyq/neet/J6QXCYAxhUCKGb6OTRuJyJ2iBZ77bRMD00OWzPRd0JE.original.fullsize.png"/><br/></span> </div>

answer:
<div class="solution">Tertiary carbocations are stable due to $+\mathrm{I}$ effect of alkyl groups and hyperconjugation. Tertiary carbocation has greater number of alpha $\mathrm{H}$ in comparison to secondary carbocation. This increases hyperconjugation which results to its greater stability.<br/>Related Theory<br/>A carbocation will be destabilized by an electron withdrawing group.</div>


title: which-animal-has-become-extinct-from-india
slug: which-animal-has-become-extinct-from-india-48954
question: <div class="question">Which animal has become extinct from India?</div>
tags: ['Biology', 'Biodiversity and its Conservation', 'NEET']
source_db: MarksBatch2_P4.db
options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">Snow Leopard</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">Hippopotamus</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">Wolf</span> </li><li class="correct"> <span class="option-label">D</span> <span class="option-data">Cheetah</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">Cheetah</span> </div>

answer:
<div class="solution">The 'Cheetah' has become extinct from India. The endangered subspecies Acinonyx jubatus venaticus lives in Asia (Iran). In 1990, there were reports in the Times of India of a cheetah sighting in eastern India.There is a chance some cheetahs remain in India, though it is doubtful. There have also been reports  of Asiatic cheetahs in the Balochistan Province to be unverified. The cheetah prefers to live in an open biotope, such as semi-desert, prairie, and thick brush.</div>


title: which-are-not-position-isomers
slug: which-are-not-position-isomers-31094
question: <div class="question">Which are not position isomers?</div>
tags: ['Chemistry', 'General Organic Chemistry', 'JEE Main']
source_db: MarksBatch2_P4.db
options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data"><img alt="" src="https://cdn-question-pool.getmarks.app/nta_abhyas/jee_main/images/0635168_1.JPG" style="width: 250px; height: 89px;"/> </span> </li><li class="correct"> <span class="option-label">B</span> <span class="option-data"><img alt="" src="https://cdn-question-pool.getmarks.app/nta_abhyas/jee_main/images/0635168_2.JPG" style="width: 260px; height: 57px;"/></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"><img alt="" src="https://cdn-question-pool.getmarks.app/nta_abhyas/jee_main/images/0635168_3.JPG" style="width: 230px; height: 99px;"/></span> </li><li class=""> <span class="option-label">D</span> <span class="option-data"><img alt="" src="https://cdn-question-pool.getmarks.app/nta_abhyas/jee_main/images/0635168_4.JPG" style="width: 250px; height: 51px;"/></span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value"><img alt="" src="https://cdn-question-pool.getmarks.app/nta_abhyas/jee_main/images/0635168_2.JPG" style="width: 260px; height: 57px;"/></span> </div>

answer:
<div class="solution">They are functional isomers.<br/><br/><img src="https://cdn-question-pool.getmarks.app/nta_abhyas/jee_main/images/cugeirwbiysxsujdybvpinuhzuxbfcbdqfggcytuyhundayayl.jpg"/></div>


title: which-cell-will-measure-standard-electrode-potential-of-copper-electrode
slug: which-cell-will-measure-standard-electrode-potential-of-copper-electrode-98867
tags: ['Chemistry', 'Electrochemistry', 'AIIMS', 'AIIMS 2014']
source_db: MarksBatch2_P4.db
question:
<div class="question">Which cell will measure standard electrode potential of copper electrode?</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">$\mathrm{Pt}_{(s)}\left|\mathrm{H}_{2(\mathrm{~g}, 0.1 \mathrm{bar})}\right| \mathrm{H}_{(a q,, 1 \mathrm{M})}^{+}|| \mathrm{Cu}_{(a q ., 1 \mathrm{M})}^{2+} \mid \mathrm{Cu}_{(s)}$</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">$\mathrm{Pt}_{(s)}\left|\mathrm{H}_{2(g, 1 \text { bar })}\right| \mathrm{H}_{(a q, 1,1 \mathrm{M})}^{+}|| \mathrm{Cu}_{(a q,, 2 \mathrm{M})}^{2+} \mid \mathrm{Cu}_{(s)}$</span> </li><li class="correct"> <span class="option-label">C</span> <span class="option-data">$\mathrm{Pt}_{(s)}\left|\mathrm{H}_{2(g, 1 \mathrm{bar})}\right| \mathrm{H}_{(a q ., 1 \mathrm{M})}^{+} \| \mathrm{Cu}_{(a q ., 1 \mathrm{M})}^{2+} \mid \mathrm{Cu}_{(s)}$</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">$\mathrm{Pt}_{(s)}\left|\mathrm{H}_{2(g, 1 \mathrm{bar})}\right| \mathrm{H}_{(a q, 0.1 \mathrm{M})}^{+} \| \mathrm{Cu}_{(a q ., 1 \mathrm{M})}^{2+} \mid \mathrm{Cu}_{(s)}$</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">$\mathrm{Pt}_{(s)}\left|\mathrm{H}_{2(g, 1 \mathrm{bar})}\right| \mathrm{H}_{(a q ., 1 \mathrm{M})}^{+} \| \mathrm{Cu}_{(a q ., 1 \mathrm{M})}^{2+} \mid \mathrm{Cu}_{(s)}$</span> </div>

answer:
<div class="solution">To calculate the standard electrode potential of the given cell it is coupled with the standard hydrogen electrode in which pressure of hydrogen gas is one bar and the conc. of $\mathrm{H}^{+}$ion in the solution is one molar and also the concentrations of the oxidised and the reduced forms of the species in the right hand half-cell are unity.</div>


title: which-cells-are-mainly-responsible-for-humoral-immunity
slug: which-cells-are-mainly-responsible-for-humoral-immunity-68725
question: <div class="question">Which cells are mainly responsible for humoral immunity?</div>
tags: ['Biology', 'Human Health and Diseases', 'NEET']
source_db: MarksBatch2_P4.db
options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">Monocytes</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">NK cell</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">T-cells</span> </li><li class="correct"> <span class="option-label">D</span> <span class="option-data">B-cells</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">B-cells</span> </div>

answer:
<div class="solution">2 special types of lymphocytes in our blood mediate the primary and secondary immune responses :<br/><br/>A. T-lymphocytes- These help the B-cells to produce antibodies.<br/><br/>B. B-lymphocytes - Involved in the synthesis of proteins called antibodies.</div>


title: which-complex-cannot-ionise-in-solution-1
slug: which-complex-cannot-ionise-in-solution-1-70886
question: <div class="question">Which complex cannot ionise in solution?</div>
tags: ['Chemistry', 'Coordination Compounds', 'KCET', 'KCET 2007']
source_db: MarksBatch2_P4.db
options:
<ul class="options"> <li class="correct"> <span class="option-label">A</span> <span class="option-data">$\left[\mathrm{CoCl}_{3}\left(\mathrm{NH}_{3}\right)_{3}\right]$</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">$\mathrm{K}_{4}\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]$</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">$\mathrm{K}_{2}\left[\mathrm{Pt}\left(\mathrm{F}_{6}\right)\right]$</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">$\left[\mathrm{Pt}\left(\mathrm{NH}_{3}\right)_{6}\right] \mathrm{Cl}_{4}$</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">$\left[\mathrm{CoCl}_{3}\left(\mathrm{NH}_{3}\right)_{3}\right]$</span> </div>

answer:
<div class="solution">$\left[\mathrm{CoCl}_{3}\left(\mathrm{NH}_{3}\right)_{3}\right]$ cannot ionise in solution because three chloride ions satisfy primary and secondary valencies. It will not be precipitated by the addition of $\mathrm{AgNO}_{3}$.</div>


title: which-condition-among-the-following-holds-true-at-the-state-of-halfcompletion-for-the-reaction-a-b
tags: ['Chemistry', 'Electrochemistry', 'AP EAMCET', 'AP EAMCET 2021 (25 Aug Shift 1)']
source_db: MarksBatch2_P4.db
slug:
which-condition-among-the-following-holds-true-at-the-state-of-halfcompletion-for-the-reaction-a-b-16065

question:
<div class="question">Which condition among the following holds true at the state of half-completion for the reaction $A \rightleftharpoons B$ ?</div>

options:
<ul class="options"> <li class="correct"> <span class="option-label">A</span> <span class="option-data">$\Delta G^{\circ}=0$</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">$\Delta G^{\circ}&gt;0$</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">$\Delta G^{\circ} &lt; 0$</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">$\Delta G^{\circ}=-R T \ln 2$</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">$\Delta G^{\circ}=0$</span> </div>

answer:
<div class="solution">Equilibrium condition in the course of a reversible chemical reaction is in which no net change in the amounts of reactants and products occurs.<br/>At equilibrium, the reaction is half completed, $[A]=[B]$<br/>Thus, $\frac{[B]}{[A]}=1$<br/>According to standard free Gibbs energy,<br/>$$<br/>\begin{aligned}<br/>\Delta G^{\circ} &amp; =-R T \ln K \\<br/>\Delta G^{\circ} &amp; =-R T \ln (1) \\<br/>{\left[\Delta G^{\circ}\right.} &amp; =0]<br/>\end{aligned}<br/>$$<br/>Hence, at equilibrium condition, the reaction is half-completed i.e., $A \rightleftharpoons B$.</div>


title: which-does-not-give-a-precipitate-with-mathrmagno3-solution
slug: which-does-not-give-a-precipitate-with-mathrmagno3-solution-75060
question: <div class="question">Which does not give a precipitate with \(\mathrm{AgNO}_3\) solution?</div>
tags: ['Chemistry', 'Coordination Compounds', 'JIPMER', 'JIPMER 2008']
source_db: MarksBatch2_P4.db
options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">\(\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_6\right] \mathrm{Cl}_3\)</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">\(\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_5 \mathrm{Cl}\right] \mathrm{Cl}_2\)</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">\(\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_4 \mathrm{Cl}_2\right] \mathrm{Cl}\)</span> </li><li class="correct"> <span class="option-label">D</span> <span class="option-data">\(\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_3 \mathrm{Cl}_3\right]\)</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> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">\(\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_3 \mathrm{Cl}_3\right]\)</span> </div>

answer:
<div class="solution">\(\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_3 \mathrm{Cl}_3\right]\) does not give a precipitate with \(\mathrm{AgNO}_3\) solution because in it all the chlorine atoms are attached by secondary valencies.</div>


title: which-element-from-following-has-highest-negative-standard-reduction-potential
slug: which-element-from-following-has-highest-negative-standard-reduction-potential-24677
tags: ['Chemistry', 'Electrochemistry', 'MHT CET', 'MHT CET 2022 (05 Aug Shift 2)']
correct_option: <div class="correct-answer"> The correct answer is: <span class="option-value">Li</span> </div>
answer: <div class="solution">Theory based</div>
source_db: MarksBatch2_P4.db
question:
<div class="question">Which element from following has highest negative standard reduction potential?</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">K</span> </li><li class="correct"> <span class="option-label">B</span> <span class="option-data">Li</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">Na</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">Rb</span> </li> </ul>


title: which-element-has-the-lowest-standard-electrode-potential
slug: which-element-has-the-lowest-standard-electrode-potential-94548
question: <div class="question">Which element has the lowest standard electrode potential?</div>
tags: ['Chemistry', 'Electrochemistry', 'NEET']
source_db: MarksBatch2_P4.db
options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">Fluorine</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">Hydrogen</span> </li><li class="correct"> <span class="option-label">C</span> <span class="option-data">Lithium</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">Copper</span> </li> </ul>

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

answer:
<div class="solution">Lithium has the lowest electrode potential indicating that lithium ion is the weakest oxidising agent while lithium metal is the most powerful reducing agent in an aqueous solution.</div>


title: which-element-is-the-third-most-abundant-in-the-earths-crust
slug: which-element-is-the-third-most-abundant-in-the-earths-crust-40582
question: <div class="question">Which element is the third most abundant in the Earth's crust?</div>
tags: ['Chemistry', 'General Principles and Processes of Isolation of Metals', 'NEET']
source_db: MarksBatch2_P4.db
options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">Iron</span> </li><li class="correct"> <span class="option-label">B</span> <span class="option-data">Aluminium</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">Carbon</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">Gold</span> </li> </ul>

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

answer:
<div class="solution">Aluminium is the third most abundant element in the Earth's crust, making up approximately 8.3% by weight.</div>


tags: ['Biology', 'Strategies for Enhancement in Food Production', 'NEET', 'NEET 2003']
correct_option: <div class="correct-answer"> The correct answer is: <span class="option-value">chiru</span> </div>
source_db: MarksBatch2_P4.db
title:
which-endangered-animal-is-the-source-of-the-worlds-finest-lightest-warmest-and-most-expensive-woolthe-shahtoosh

slug:
which-endangered-animal-is-the-source-of-the-worlds-finest-lightest-warmest-and-most-expensive-woolthe-shahtoosh-51694

question:
<div class="question">Which endangered animal is the source of the world's finest, lightest, warmest and most expensive wool-the shahtoosh?</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">nilgai</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">cheetah</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">kashmiri goat</span> </li><li class="correct"> <span class="option-label">D</span> <span class="option-data">chiru</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">Shahtoosh comes from the short, warm fleece of the rare Tibetan antelope (Pantholops hodgsonii - Chiru), a species found almost exclusively in the Changtang area of Tibet, on the Tibetan Plateau. It takes four animals to provide enough wool for just one shahtoosh shawl or scarf.<br/>Related Theory<br/>Despite legal protection of the highest order, the population of chiru is constantly on the decline and today the species is extremely endangered.</div>


tags: ['Chemistry', 'Electrochemistry', 'NEET']
source_db: MarksBatch2_P4.db
title:
which-equation-gives-relation-between-concentration-of-ions-in-solution-electrode-potential-e-and-standard-electrode-potential-e

slug:
which-equation-gives-relation-between-concentration-of-ions-in-solution-electrode-potential-e-and-standard-electrode-potential-e-21058

question:
<div class="question">Which equation gives relation between concentration of ions in solution, electrode potential <math><mo>(</mo><mi mathvariant="normal">E</mi><mo>)</mo></math> and standard electrode potential <math><mfenced separators="|"><mrow><mi mathvariant="normal">E</mi><mo>Â°?</mo></mrow></mfenced></math></div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">Faraday's equation</span> </li><li class="correct"> <span class="option-label">B</span> <span class="option-data">Nernst's equation</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">Ohm's equation</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">Kohlrausch's equation</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">Nernst's equation</span> </div>

answer:
<div class="solution">Nernstâs equation shows relation between <math><mi mathvariant="normal">E </mi><mi mathvariant="normal"></mi><mi mathvariant="normal">a</mi><mi mathvariant="normal">n</mi><mi mathvariant="normal">d </mi><mi mathvariant="normal"></mi><msup><mrow><mi mathvariant="normal">E</mi></mrow><mrow><mi mathvariant="normal">o</mi></mrow></msup></math>.<br/><math><mi mathvariant="normal">E</mi><mo>=</mo><msup><mrow><mi mathvariant="normal">E</mi></mrow><mrow><mo>â</mo></mrow></msup><mo>-</mo><mfrac><mrow><mn>0.0591</mn></mrow><mrow><mi mathvariant="normal">n</mi></mrow></mfrac><mi mathvariant="normal">l</mi><mi mathvariant="normal">o</mi><mi mathvariant="normal">g</mi><mi mathvariant="normal">Q</mi></math></div>


title: which-from-following-elements-is-most-abundant-on-earth
slug: which-from-following-elements-is-most-abundant-on-earth-82124
question: <div class="question">Which from following elements is most abundant on earth?</div>
tags: ['Chemistry', 'Hydrogen', 'MHT CET', 'MHT CET 2023 (10 May Shift 2)']
source_db: MarksBatch2_P4.db
options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">$\mathrm{N}$</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">$\mathrm{C}$</span> </li><li class="correct"> <span class="option-label">C</span> <span class="option-data">$\mathrm{O}$</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">$\mathrm{H}$</span> </li> </ul>

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

answer:
<div class="solution">\begin{array}{|l|l|l|} \hline Std.12 &amp; \mathrm{Ch}-7 &amp; Subtopic-7.2 \\ \hline \end{array}</div>


tags: ['Chemistry', 'Electrochemistry', 'MHT CET', 'MHT CET 2022 (05 Aug Shift 1)']
source_db: MarksBatch2_P4.db
title:
which-from-following-equation-is-correct-for-relation-between-strandard-cell-potential-and-equilibrium-constant

slug:
which-from-following-equation-is-correct-for-relation-between-strandard-cell-potential-and-equilibrium-constant-33723

question:
<div class="question">Which from following equation is correct for relation between strandard cell potential and equilibrium constant?</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">$\mathrm{E}_{\text {cell }}^0=\log _{10} \mathrm{~K} \frac{\mathrm{n}}{0.0592}$</span> </li><li class="correct"> <span class="option-label">B</span> <span class="option-data">$\mathrm{E}_{\text {cell }}^0=\frac{0.0592}{\mathrm{n}} \log _{10} \mathrm{~K}$</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">$\mathrm{E}_{\text {cell }}=\frac{0.0592}{\mathrm{n}} \log _{10} \mathrm{~K}$</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">$\mathrm{E}_{\text {cell }}=\log _{10} \mathrm{~K} \frac{\mathrm{n}}{0.0592}$</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">$\mathrm{E}_{\text {cell }}^0=\frac{0.0592}{\mathrm{n}} \log _{10} \mathrm{~K}$</span> </div>

answer:
<div class="solution">We know $\mathrm{E}_{\text {cell }}=\mathrm{E}_{\text {cell }}^0-\frac{0.0592}{\mathrm{n}} \log _{10} \mathrm{Q}$<br/>Or at equilibrium $0=\mathrm{E}_{\text {cell }}^0-\frac{0.0592}{\mathrm{n}} \log _{10} \mathrm{~K}$<br/>Or $\mathrm{E}_{\text {cell }}^0=\frac{0.0592}{\mathrm{n}} \log _{10} \mathrm{~K}$</div>


tags: ['Chemistry', 'Electrochemistry', 'MHT CET', 'MHT CET 2021 (23 Sep Shift 1)']
source_db: MarksBatch2_P4.db
title:
which-from-the-following-is-the-correct-relationship-between-standard-gibbs-energy-change-and-standard-cell-potential

slug:
which-from-the-following-is-the-correct-relationship-between-standard-gibbs-energy-change-and-standard-cell-potential-56309

question:
<div class="question">Which from the following is the correct relationship between standard Gibbs energy change and standard cell potential?</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">$-\Delta \mathrm{G}^{\circ}=-\mathrm{nFE}_{\text {cell }}^0$</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">$\Delta \mathrm{G}^{\circ}=\frac{\mathrm{E}_{\mathrm{cel} 1}^{\circ}}{\mathrm{nF}}$</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">$\mathrm{E}_{\text {cel1 }}^0=\Delta \mathrm{G}^{\circ} \times \mathrm{nF}$</span> </li><li class="correct"> <span class="option-label">D</span> <span class="option-data">$\Delta \mathrm{G}^{\circ}=-\mathrm{nFE}_{\text {cell }}^{\circ}$</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">$\Delta \mathrm{G}^{\circ}=-\mathrm{nFE}_{\text {cell }}^{\circ}$</span> </div>

answer:
<div class="solution">Relationship between standard gibbs energy change and standard cell potential is,<br/>$$<br/>\Delta \mathrm{G}^{\circ}=-\mathrm{nFE}_{\text {cell }}^{\circ}<br/>$$</div>


title: which-group-of-vertebrates-comprises-the-high-number-of-endangered-species
slug: which-group-of-vertebrates-comprises-the-high-number-of-endangered-species-85755
tags: ['Biology', 'Biodiversity and its Conservation', 'NEET', 'NEET 2003']
source_db: MarksBatch2_P4.db
question:
<div class="question">Which group of vertebrates comprises the high number of endangered species?</div>

options:
<ul class="options"> <li class="correct"> <span class="option-label">A</span> <span class="option-data">mammals</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">fishes</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">reptiles</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">birds</span> </li> </ul>

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

answer:
<div class="solution">Mammals are the most complex animal that cannot easily adapt the environmental changes and some mammals are used as a source of industrial raw materials. Thus, due to climatic change and hunting their population is getting down and become endangered. Mammalian species have the highest number of endangered species (177), accounting for $3.8 \%$ of all vertebrate species.<br/>Related Theory<br/>Fish (including sharks) make up the largest group of vertebrates. Nearly half of all vertebrates are fish. The insect is the largest class of animals. It has over 7.00 .000 species.</div>


title: which-group-of-vertebrates-comprises-the-highest-number-of-endangered-species
slug: which-group-of-vertebrates-comprises-the-highest-number-of-endangered-species-56228
tags: ['Biology', 'Biodiversity and its Conservation', 'NEET']
source_db: MarksBatch2_P4.db
question:
<div class="question">Which group of vertebrates comprises the highest number of endangered species?</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">Birds </span> </li><li class="correct"> <span class="option-label">B</span> <span class="option-data">Mammals</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">Fishes </span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">Reptiles </span> </li> </ul>

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

answer:
<div class="solution">The grim scenario of extinction is the fact that more than 15,500 species worldwide are facing the threat of extinction. Presently, 12% of all bird species, 23% of all mammal species, 32% of all amphibian species and 31%t of all gymnosperm species in the world face the threat of extinction.</div>


title: which-harmonic-mode-of-a-closedend-pipe-20-cm-long-is-resonantly-excited-by-a-430-hz-source
slug: which-harmonic-mode-of-a-closedend-pipe-20-cm-long-is-resonantly-excited-by-a-430-hz-source-42990
tags: ['Chemistry', 'Waves and Sound', 'NEET']
answer: <div class="solution">Correct Option is : (A)<br/>First harmonic (fundamental frequency)</div>
source_db: MarksBatch2_P4.db
question:
<div class="question">Which harmonic mode of a closed-end pipe, 20 cm long, is resonantly excited by a 430 Hz source?</div>

options:
<ul class="options"> <li class="correct"> <span class="option-label">A</span> <span class="option-data">First harmonic (fundamental frequency)</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">Second harmonic</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">Third harmonic</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">Fourth harmonic</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">First harmonic (fundamental frequency)</span> </div>


title: which-hormone-tends-to-increase-the-blood-glucose-level-in-human-1
slug: which-hormone-tends-to-increase-the-blood-glucose-level-in-human-1-55208
question: <div class="question">Which hormone tends to increase the blood glucose level in human?</div>
tags: ['Chemistry', 'General Organic Chemistry', 'JEE Main']
source_db: MarksBatch2_P4.db
options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">Insulin</span> </li><li class="correct"> <span class="option-label">B</span> <span class="option-data">Glucagon</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">Epinephrine</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">Estrogen</span> </li> </ul>

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

answer:
<div class="solution"><blockquote><p>Hormones have several functions in the body. They help to maintain the balance of biological activities in the body.</p><p>The role of insulin in keeping the blood glucose level within the narrow limit is an example of this function. Insulin is released in response to the rapid rise in blood glucose level. On the other hand hormone glucagon tends to increase the glucose level in the blood. The two hormones together regulate the glucose level in the blood.</p><p>Epinephrine and norepinephrine mediate responses to external stimuli.</p><p>Estrogen or oestrogen is a category of sex hormone responsible for the development and regulation of the female reproductive system and secondary sex characteristics.</p><p>In terms of chemical nature, some of these are steroids, e.g., estrogens and androgens; some are poly peptides for example insulin and endorphins and some others are amino acid derivatives such as epinephrine and norepinephrine</p></blockquote></div>


title: which-is-a-stronger-reducing-agent-between-cr-2-and-fe-2-and-why
slug: which-is-a-stronger-reducing-agent-between-cr-2-and-fe-2-and-why-85834
tags: ['Chemistry', 'd and f Block Elements', 'NEET']
source_db: MarksBatch2_P4.db
question:
<div class="question">Which is a stronger reducing agent between Cr<sup>2+</sup>and Fe<sup>2+</sup>and why?</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">Cr<sup>2+</sup>is a stronger reducing agent because it has a higher atomic number.</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">Fe<sup>2+</sup>is a stronger reducing agent because it has a smaller ionic radius.</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">Cr<sup>2+</sup>is a stronger reducing agent because it has a more positive standard reduction potential (E<sup>â</sup>) value.</span> </li><li class="correct"> <span class="option-label">D</span> <span class="option-data">because d<sup>4</sup>to d<sup>3</sup>transition<sup></sup>occurs in case of Cr<sup>2+</sup>to Cr<sup>3+</sup>But d<sup>6</sup>to d<sup>5</sup>transition occurs in case of Fe<sup>2+</sup>to Fe<sup>3+</sup></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">because d<sup>4</sup>to d<sup>3</sup>transition<sup></sup>occurs in case of Cr<sup>2+</sup>to Cr<sup>3+</sup>But d<sup>6</sup>to d<sup>5</sup>transition occurs in case of Fe<sup>2+</sup>to Fe<sup>3+</sup></span> </div>

answer:
<div class="solution">Correct Option is : (D)<br/>because d<sup>4</sup>to d<sup>3</sup>transition<sup></sup>occurs in case of Cr<sup>2+</sup>to Cr<sup>3+</sup>But d<sup>6</sup>to d<sup>5</sup>transition occurs in case of Fe<sup>2+</sup>to Fe<sup>3+</sup></div>


title: which-is-a-wrong-pair-about-c-4-plants
slug: which-is-a-wrong-pair-about-c-4-plants-16198
tags: ['Biology', 'Photosynthesis in Higher Plants', 'NEET']
source_db: MarksBatch2_P4.db
question:
<div class="question">Which is a wrong pair about <math><msub><mrow><mi mathvariant="normal">C</mi></mrow><mrow><mn>4</mn></mrow></msub></math> plants?</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">Mesophyll - Homogenous</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">Chloroplasts - Dimorphism</span> </li><li class="correct"> <span class="option-label">C</span> <span class="option-data">PEP carboxylase - Present in bundle sheath chloroplast</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">RUBISCO - Present in abundance in chloroplasts of bundle sheath cell</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">PEP carboxylase - Present in bundle sheath chloroplast</span> </div>

answer:
<div class="solution"><math><msub><mrow><mi mathvariant="normal">C</mi></mrow><mrow><mn>4</mn></mrow></msub></math> plants are called so because the first product of carbon-di-oxide fixation is oxaloacetic acid, which has 4 carbon compounds. <math><msub><mrow><mi mathvariant="normal">C</mi></mrow><mrow><mn>4</mn></mrow></msub></math> plants have a special composition as their leaves show response to high light intensities and they can tolerate high temperatures. The primary acceptor of <math><msub><mrow><mi mathvariant="normal">C</mi><mi mathvariant="normal">O</mi></mrow><mrow><mn>2</mn></mrow></msub></math> , that is phosphoenolpyruvate (PEP) is found in the mesophyll cells which is fixed with the help of an enzyme PEP carboxylase.</div>


title: which-is-correct-order-of-seral-stages-in-hydrach
slug: which-is-correct-order-of-seral-stages-in-hydrach-46712
question: <div class="question">Which is CORRECT order of seral stages in hydrach?</div>
tags: ['Biology', 'Ecosystem', 'NEET']
source_db: MarksBatch2_P4.db
options:
<ul class="options"> <li class="correct"> <span class="option-label">A</span> <span class="option-data">Phytoplankton-Rooted submerged stage-Rooted free floating plant-reed swamp stage-marsh meadow stage-scrub stage-forest</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">Scrub stages-forest-reed swamp stage-marsh meadow stage-submerged free floating plant stage-submerged plant-phytoplankton</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">Submerged plant-marsh meadow stage-scrub stages-forest-phytoplankton-submerged free floating plant stage-reed swamp stage</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">Phytoplankton-red swamp stage-scrub stages-forest-submerged plant-submerged free floating plant stage-marsh meadow stage</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">Phytoplankton-Rooted submerged stage-Rooted free floating plant-reed swamp stage-marsh meadow stage-scrub stage-forest</span> </div>

answer:
<div class="solution">Ecological succession is defined as the process of gradual and predictable change in the species composition of an area. Primary succession occurs in those areas where no organism ever existed whereas secondary succession takes place in those areas where organisms once existed but now have lost them due to some reason. In Primary succession of wet land into forest the first to appear are the phytoplanktons. They are replaced by submerged plants and later submerged and floating plants both appear. Gradually it passes through the reed swamp and marsh meadow stages and lastly scrubs appear before forming it into a forest land.</div>


tags: ['Chemistry', 'Alcohols Phenols and Ethers', 'JEE Main']
correct_option: <div class="correct-answer"> The correct answer is: <span class="option-value">Only B</span> </div>
source_db: MarksBatch2_P4.db
title:
which-is-correctly-matched-beginarraylllllhline-textalcohol-alphamathrmh-betamathrmh-text-colour-in-text-victor-meyer-hline-a-x-3-0-textcolourless-hli

slug:
which-is-correctly-matched-beginarraylllllhline-textalcohol-alphamathrmh-betamathrmh-text-colour-in-text-victor-meyer-hline-a-x-3-0-textcolourless-hli-36476

question:
<div class="question">Which is correctly matched?<br/>\(\begin{array}{|l|l|l|l|l|}\hline &amp; \text{Alcohol} &amp;  \alpha-\mathrm{H}  &amp;  \beta-\mathrm{H}  &amp; \text{ Colour in } \\&amp; &amp; &amp; &amp; \text{ victor meyer } \\\hline A &amp; X &amp;  3  &amp;  0  &amp; \text{Colourless} \\\hline B &amp; Y &amp;  1  &amp;  6  &amp; \text{Blue} \\\hline C &amp; Z &amp;  0  &amp;  9  &amp; \text{Red} \\\hline\end{array}\)</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">\( \mathrm{A} \) and \( \mathrm{B} \)</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">\( \mathrm{B} \) and \( \mathrm{C} \)</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">Only C</span> </li><li class="correct"> <span class="option-label">D</span> <span class="option-data">Only B</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"><p>The Victor Meyer test is used to differentiate between primary, secondary, and tertiary alcohol by the colour they obtain when they interact with the victor Meyer reagent.</p><p>Primary alcohols – Red colour</p><p>Secondary alcohols – Blue colour</p><p>Tertiary alcohol – No colour is observed.</p><p>Alcohol X which has three alpha hydrogen and zero beta hydrogen, so the structure will be <math xmlns="http://www.w3.org/1998/Math/MathML"><msub><mi>CH</mi><mn>3</mn></msub><mo>-</mo><mi>OH</mi></math></p><p>Alcohol Y which has one alpha hydrogen and six hydrogens, so the structure will be <math xmlns="http://www.w3.org/1998/Math/MathML"><mo>(</mo><msub><mi>CH</mi><mn>3</mn></msub><msub><mo>)</mo><mn>2</mn></msub><mi>CH</mi><mo>-</mo><mi>OH</mi></math> and it is sec. alcohol.</p><p>Alcohol Z which has zero alpha hydrogen and nine beta hydrogen, so the structure will be <math xmlns="http://www.w3.org/1998/Math/MathML"><mo>(</mo><msub><mi>CH</mi><mn>3</mn></msub><msub><mo>)</mo><mn>3</mn></msub><mi mathvariant="normal">C</mi><mo>-</mo><mi>OH</mi></math> and it is tert. alcohol.</p></div>


title: which-is-correctly-matched-in-a-normal-menstrual-cycle
slug: which-is-correctly-matched-in-a-normal-menstrual-cycle-77030
question: <div class="question">Which is CORRECTLY matched in a normal menstrual cycle?</div>
tags: ['Biology', 'Human Reproduction', 'NEET']
source_db: MarksBatch2_P4.db
options:
<ul class="options"> <li class="correct"> <span class="option-label">A</span> <span class="option-data">Endometrium regenerates  <math><msup><mrow><mn>5</mn></mrow><mrow><mi mathvariant="normal">t</mi><mi mathvariant="normal">h</mi></mrow></msup></math>  to  <math><msup><mrow><mn>10</mn></mrow><mrow><mi mathvariant="normal">t</mi><mi mathvariant="normal">h</mi></mrow></msup></math>  day</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">Release of egg- <math><msup><mrow><mn>5</mn></mrow><mrow><mi mathvariant="normal">t</mi><mi mathvariant="normal">h</mi></mrow></msup></math>  day</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">Endometrium secretes nutrients for implanation - <math><msup><mrow><mn>11</mn></mrow><mrow><mi mathvariant="normal">t</mi><mi mathvariant="normal">h</mi></mrow></msup></math>  to  <math><msup><mrow><mn>18</mn></mrow><mrow><mi mathvariant="normal">t</mi><mi mathvariant="normal">h</mi></mrow></msup></math>  day</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">Rise in progesterone level  <math><msup><mrow><mn>1</mn></mrow><mrow><mi mathvariant="normal">s</mi><mi mathvariant="normal">t</mi></mrow></msup></math>  to  <math><msup><mrow><mn>15</mn></mrow><mrow><mi mathvariant="normal">t</mi><mi mathvariant="normal">h</mi></mrow></msup></math>  day</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">Endometrium regenerates  <math><msup><mrow><mn>5</mn></mrow><mrow><mi mathvariant="normal">t</mi><mi mathvariant="normal">h</mi></mrow></msup></math>  to  <math><msup><mrow><mn>10</mn></mrow><mrow><mi mathvariant="normal">t</mi><mi mathvariant="normal">h</mi></mrow></msup></math>  day</span> </div>

answer:
<div class="solution">Menstrual cycle consists of changes in the Ovary and the Uterus simultaneously. It begins with Menstrual or bleeding phase. This represents shedding of endometrium of uterus and unfertilized secondary oocyte. This phase is followed by follicular phase as follicles start developing in the ovary. At the same time the shedded endometrium starts its preparation and this is termed as proliferative phase. At the same time the follicles develop in the ovary from day  <math><msup><mrow><mn>5</mn></mrow><mrow><mi mathvariant="normal">t</mi><mi mathvariant="normal">h</mi></mrow></msup></math>  to  <math><msup><mrow><mn>10</mn></mrow><mrow><mi mathvariant="normal">t</mi><mi mathvariant="normal">h</mi></mrow></msup></math>  day.  The mid of 28 day cycle shows ovulatory phase that is graffian follicle from ovary releases secondary oocyte in the oviduct. This is followed by formation of corpus luteum and is known as Luteal phase and this shows high level of estrogen and progesterone.</div>


title: which-is-false-for-vexillary-or-papilionaceous-aestivation
slug: which-is-false-for-vexillary-or-papilionaceous-aestivation-18592
question: <div class="question">Which is false for vexillary or papilionaceous aestivation?</div>
tags: ['Biology', 'Morphology of Flowering Plants', 'NEET']
source_db: MarksBatch2_P4.db
options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">Two smallest anterior petals are known as keel.</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">Two lateral petals are known as wing.</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">The largest standard petal is posterior.</span> </li><li class="correct"> <span class="option-label">D</span> <span class="option-data">The largest standard petal is anterior and overlaps wing.</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">The largest standard petal is anterior and overlaps wing.</span> </div>

answer:
<div class="solution">In vexillary aestivation the largest posterior petal is called as standard or vexillum, two lateral petals are called as wings and the two anterior smallest petals which are fused are known as keel. Vexillary aestivation thus shows  <math><mn>1</mn><mo>+</mo><mn>2</mn><mo>+</mo><mfenced separators="|"><mrow><mi mathvariant="normal">B</mi></mrow></mfenced></math>   arrangement of petals.</div>


title: which-is-not-a-secondary-messenger-in-hormone-mediated-action
slug: which-is-not-a-secondary-messenger-in-hormone-mediated-action-51309
question: <div class="question">Which is not a secondary messenger in hormone mediated action?</div>
tags: ['Biology', 'Chemical Coordination and Integration', 'NEET']
source_db: MarksBatch2_P4.db
options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data"><math><msub><mrow><mi mathvariant="normal">I</mi><mi mathvariant="normal">P</mi></mrow><mrow><mn>3</mn></mrow></msub></math></span> </li><li class=""> <span class="option-label">B</span> <span class="option-data"><math><msup><mrow><mi mathvariant="normal">C</mi><mi mathvariant="normal">a</mi></mrow><mrow><mn>2</mn><mo>+</mo></mrow></msup></math></span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">cAMP</span> </li><li class="correct"> <span class="option-label">D</span> <span class="option-data"><math><msub><mrow><mi mathvariant="normal">N</mi><mi mathvariant="normal">a</mi><mi mathvariant="normal">H</mi><mi mathvariant="normal">C</mi><mi mathvariant="normal">O</mi></mrow><mrow><mn>3</mn></mrow></msub></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><msub><mrow><mi mathvariant="normal">N</mi><mi mathvariant="normal">a</mi><mi mathvariant="normal">H</mi><mi mathvariant="normal">C</mi><mi mathvariant="normal">O</mi></mrow><mrow><mn>3</mn></mrow></msub></math></span> </div>

answer:
<div class="solution">Hormonal action depends on whether the hormone is Lipid or water soluble. Lipid soluble hormones can cross the target cell membrane easily, get attached to the mobile receptors within the cytoplasm and reach the nucleus to perform their functions. However water soluble hormones are proteinaceous and these include insulin, oxytocin etc. These cannot cross the cell membrane easily. These get attached to the static receptors on the cell membrane. This attachment triggers the formation of secondary messengers that help these hormones to act on cells. These also cause amplification of hormonal action so that many targets are affected by single hormone. This concept was explained by Sutherland. Secondary messengers commonly seen in cells are Cyclic AMP. Other examples are Inositol tri phosphate (IP3), Calcium and Cyclic GMP.</div>


title: which-is-not-true-about-borax-1
slug: which-is-not-true-about-borax-1-59583
question: <div class="question">Which is not true about borax?</div>
tags: ['Chemistry', 'p Block Elements (Group 13 & 14)', 'JEE Main']
source_db: MarksBatch2_P4.db
options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">It is a useful primary standard for titrating against acids</span> </li><li class="correct"> <span class="option-label">B</span> <span class="option-data">One mole of borax contains 4 <math><mi mathvariant="normal">B</mi><mo>-</mo><mi mathvariant="normal">O</mi><mo>-</mo><mi mathvariant="normal">B</mi></math> bonds</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">Aqueous solution of borax can be used as buffer</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">It is made up of two triangular <math><mi mathvariant="normal">B</mi><msub><mrow><mi mathvariant="normal">O</mi></mrow><mrow><mn>3</mn></mrow></msub></math> units and two tetrahedral <math><mi mathvariant="normal">B</mi><msub><mrow><mi mathvariant="normal">O</mi></mrow><mrow><mn>4</mn></mrow></msub></math> units</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">One mole of borax contains 4 <math><mi mathvariant="normal">B</mi><mo>-</mo><mi mathvariant="normal">O</mi><mo>-</mo><mi mathvariant="normal">B</mi></math> bonds</span> </div>

answer:
<div class="solution">Here only in option B is incorrect while rest other are correct.<br/>In borax <math><mfenced separators="|"><mrow><mi mathvariant="normal">N</mi><msub><mrow><mi mathvariant="normal">a</mi></mrow><mrow><mn>2</mn></mrow></msub><msub><mrow><mi mathvariant="normal">B</mi></mrow><mrow><mn>4</mn></mrow></msub><msub><mrow><mi mathvariant="normal">O</mi></mrow><mrow><mn>7</mn></mrow></msub><mo>.</mo><mn>10</mn><msub><mrow><mi mathvariant="normal">H</mi></mrow><mrow><mn>2</mn></mrow></msub><mi mathvariant="normal">O</mi></mrow></mfenced><mo>,</mo></math> among 10 water molecules 2 molecules are part of structure, i.e., exists <math><mi mathvariant="normal">N</mi><msub><mrow><mi mathvariant="normal">a</mi></mrow><mrow><mn>2</mn></mrow></msub><mo>[</mo><msub><mrow><mi mathvariant="normal">B</mi></mrow><mrow><mn>4</mn></mrow></msub><msub><mrow><mi mathvariant="normal">O</mi></mrow><mrow><mn>5</mn></mrow></msub><mo>(</mo><mi mathvariant="normal">O</mi><mi mathvariant="normal">H</mi><msub><mrow><mo>)</mo></mrow><mrow><mn>4</mn></mrow></msub><mo>]</mo><mo>.</mo><mn>8</mn><msub><mrow><mi mathvariant="normal">H</mi></mrow><mrow><mn>2</mn></mrow></msub><mi mathvariant="normal">O</mi></math><br/><img src="https://cdn-question-pool.getmarks.app/nta_abhyas/jee_main/images/44598cc6-6660-412d-9429-245c9a9167ea.jpeg" style="max-width:100%; object-fit:contain"/><br/><math><mi mathvariant="normal">N</mi><msub><mrow><mi mathvariant="normal">a</mi></mrow><mrow><mn>2</mn></mrow></msub><mo>[</mo><msub><mrow><mi mathvariant="normal">B</mi></mrow><mrow><mn>4</mn></mrow></msub><msub><mrow><mi mathvariant="normal">O</mi></mrow><mrow><mn>5</mn></mrow></msub><mo>(</mo><mi mathvariant="normal">O</mi><mi mathvariant="normal">H</mi><msub><mrow><mo>)</mo></mrow><mrow><mn>4</mn></mrow></msub><mo>]</mo><mo>.</mo><mn>8</mn><msub><mrow><mi mathvariant="normal">H</mi></mrow><mrow><mn>2</mn></mrow></msub><mi mathvariant="normal">O</mi><mo>+</mo><mn>2</mn><mi mathvariant="normal">H</mi><mi mathvariant="normal">C</mi><mi mathvariant="normal">l</mi><mo>â</mo><mn>2</mn><mi mathvariant="normal">N</mi><mi mathvariant="normal">a</mi><mi mathvariant="normal">C</mi><mi mathvariant="normal">l</mi><mo>+</mo><mn>4</mn><msub><mrow><mi mathvariant="normal">H</mi></mrow><mrow><mn>3</mn></mrow></msub><mi mathvariant="normal">B</mi><msub><mrow><mi mathvariant="normal">O</mi></mrow><mrow><mn>3</mn></mrow></msub><mo>+</mo><mn>5</mn><msub><mrow><mi mathvariant="normal">H</mi></mrow><mrow><mn>2</mn></mrow></msub><mi mathvariant="normal">O</mi></math><br/>Methyl orange (pH = 3.7) is used to detect end point. Aqueous solution of borax acts as buffer, as borax is salt of strong base NaOH and weak acid <math><msub><mrow><mi mathvariant="normal">H</mi></mrow><mrow><mn>3</mn></mrow></msub><mi mathvariant="normal">B</mi><msub><mrow><mi mathvariant="normal">O</mi></mrow><mrow><mn>3</mn></mrow></msub></math> .</div>


title: which-is-not-true-about-borax
slug: which-is-not-true-about-borax-13248
question: <div class="question">Which is not true about borax ?</div>
tags: ['Chemistry', 'p Block Elements (Group 13 & 14)', 'NEET']
source_db: MarksBatch2_P4.db
options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">It is a useful primary standard for titrating against acids</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">One mole of borax can be used as a buffer</span> </li><li class="correct"> <span class="option-label">C</span> <span class="option-data">Aqueous solution of borax can not be used as buffer</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">It is made up of two triangular BO<sub>3</sub> units and two tetrahedral BO<sub>4</sub> units</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">Aqueous solution of borax can not be used as buffer</span> </div>

answer:
<div class="solution">In borax <math> <mrow> <mfenced close=")" open="(" separators=","> <mrow> <msub> <mtext>Na</mtext> <mn>2</mn> </msub> <msub> <mtext>B</mtext> <mn>4</mn> </msub> <msub> <mtext>O</mtext> <mn>7</mn> </msub> <mo>Â·</mo> <mn>1</mn> <mn>0</mn> <msub> <mtext>H</mtext> <mn>2</mn> </msub> <mtext>O</mtext> </mrow> </mfenced> </mrow> </math> , among 10 water molecules 2 molecules are part of structure, i.e., exists <math> <mrow> <msub> <mtext>Na</mtext> <mn>2</mn> </msub> <mfenced close="]" open="[" separators=","> <mrow> <msub> <mtext>B</mtext> <mn>4</mn> </msub> <msub> <mtext>O</mtext> <mn>5</mn> </msub> <msub> <mrow> <mfenced close=")" open="(" separators=","> <mrow> <mtext>OH</mtext> </mrow> </mfenced> </mrow> <mn>4</mn> </msub> </mrow> </mfenced> <mo>Â·</mo> <mn>8</mn> <msub> <mtext>H</mtext> <mn>2</mn> </msub> <mtext>O</mtext> </mrow> </math><br/><br/><u><strong><img alt="" object-fit:contain="" src="https://cdn-question-pool.getmarks.app/nta_abhyas/neet/images/EM0027915_AnsExp_2.jpg" style="max-width:"/></strong></u><br/><br/><math><mrow><msub><mtext>Na</mtext> <mn>2</mn> </msub> <mfenced close="]" open="[" separators=","> <mrow> <msub> <mtext>B</mtext> <mn>4</mn> </msub> <msub> <mtext>O</mtext> <mn>5</mn> </msub> <msub> <mrow> <mfenced close=")" open="(" separators=","> <mrow> <mtext>OH</mtext> </mrow> </mfenced> </mrow> <mn>4</mn> </msub> </mrow> </mfenced> <mo>Â·</mo> <mn>8</mn> <msub> <mtext>H</mtext> <mn>2</mn> </msub> <mtext>O</mtext> <mo>+</mo> <mn>2</mn> <mtext>HCl</mtext> <mo>â</mo> <mn>2</mn> <mtext>NaCl</mtext> <mo>+</mo> <mn>4</mn> <msub> <mtext>H</mtext> <mn>3</mn> </msub> <msub> <mtext>BO</mtext> <mn>3</mn> </msub> <mo>+</mo> <mn>5</mn> <msub> <mtext>H</mtext> <mn>2</mn> </msub> <mtext>O</mtext> </mrow> </math><br/><br/>At end point pH is about 4 and, therefore, Methyl orange (works between pH = 3.1 - 4.4) is used to detect end point. Aq. solution of borax acts as buffer, as borax is salt of strong base NaOH and weak acid H<sub>3</sub>BO<sub>3</sub>.<br/><br/><math> <mrow> <msub> <mtext>B</mtext> <mn>4</mn> </msub> <msub> <mtext>O</mtext> <mn>5</mn> </msub> <msubsup> <mrow> <mrow><mo>(</mo> <mrow> <mtext>O</mtext><mtext>H</mtext></mrow> <mo>)</mo></mrow></mrow> <mn>4</mn> <mrow> <mn>2</mn><mo>â</mo></mrow> </msubsup> <mrow><mo>(</mo> <mtext>s</mtext> <mo>)</mo></mrow><mo>+</mo><mn>5</mn><msub> <mtext>H</mtext> <mn>2</mn> </msub> <mtext>O</mtext><mrow><mo>(</mo> <mtext>l</mtext> <mo>)</mo></mrow><mo>â</mo><munder> <mrow> <mn>2</mn><mtext>B</mtext><msub> <mrow> <mrow><mo>(</mo> <mrow> <mtext>O</mtext><mtext>H</mtext></mrow> <mo>)</mo></mrow></mrow> <mn>3</mn> </msub> <mrow><mo>(</mo> <mrow> <mtext>a</mtext><mtext>q</mtext></mrow> <mo>)</mo></mrow></mrow> <mrow> <mrow><mo>(</mo> <mrow> <mtext>w</mtext><mtext>e</mtext><mtext>a</mtext><mtext>k</mtext><mtext>â</mtext><mtext>â</mtext><mtext>a</mtext><mtext>c</mtext><mtext>i</mtext><mtext>d</mtext></mrow> <mo>)</mo></mrow></mrow> </munder> <mo>+</mo><munder> <mrow> <mn>2</mn><msup> <mrow> <mrow><mo>[</mo> <mrow> <mtext>B</mtext><msub> <mrow> <mrow><mo>(</mo> <mrow> <mtext>O</mtext><mtext>H</mtext></mrow> <mo>)</mo></mrow></mrow> <mn>4</mn> </msub> </mrow> <mo>]</mo></mrow></mrow> <mo>â</mo> </msup> <mrow><mo>(</mo> <mrow> <mtext>a</mtext><mtext>q</mtext></mrow> <mo>)</mo></mrow></mrow> <mrow> <mrow><mo>(</mo> <mrow> <mtext>s</mtext><mtext>a</mtext><mtext>l</mtext><mtext>t</mtext></mrow> <mo>)</mo></mrow></mrow> </munder> </mrow> </math></div>


tags: ['Chemistry', 'Electrochemistry', 'NEET']
source_db: MarksBatch2_P4.db
title:
which-is-the-correct-relationship-between-equilibrium-constant-and-standard-reduction-potential-of-cell

slug:
which-is-the-correct-relationship-between-equilibrium-constant-and-standard-reduction-potential-of-cell-90678

question:
<div class="question">Which is the correct relationship between equilibrium constant and standard reduction potential of cell?</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data"><math><msubsup><mrow><mi mathvariant="normal">E</mi></mrow><mrow><mi mathvariant="normal">c</mi><mi mathvariant="normal">e</mi><mi mathvariant="normal">l</mi><mi mathvariant="normal">l</mi></mrow><mrow><mn>0</mn></mrow></msubsup><mo>=</mo><mn>0.059</mn><mi mathvariant="normal"></mi><mi mathvariant="normal">n</mi><mi mathvariant="normal"></mi><mi mathvariant="normal">l</mi><mi mathvariant="normal">o</mi><mi mathvariant="normal">g</mi><msub><mrow><mi mathvariant="normal">K</mi></mrow><mrow><mi mathvariant="normal">c</mi></mrow></msub></math></span> </li><li class="correct"> <span class="option-label">B</span> <span class="option-data"><math><msubsup><mrow><mi mathvariant="normal">E</mi></mrow><mrow><mi mathvariant="normal">c</mi><mi mathvariant="normal">e</mi><mi mathvariant="normal">l</mi><mi mathvariant="normal">l</mi></mrow><mrow><mn>0</mn></mrow></msubsup><mo>=</mo><mfrac><mrow><mn>0.059</mn></mrow><mrow><mi mathvariant="normal">n</mi></mrow></mfrac><mi mathvariant="normal">l</mi><mi mathvariant="normal">o</mi><mi mathvariant="normal">g</mi><msub><mrow><mi mathvariant="normal">K</mi></mrow><mrow><mi mathvariant="normal">c</mi></mrow></msub></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><msubsup><mrow><mi mathvariant="normal">E</mi></mrow><mrow><mi mathvariant="normal">c</mi><mi mathvariant="normal">e</mi><mi mathvariant="normal">l</mi><mi mathvariant="normal">l</mi></mrow><mrow><mn>0</mn></mrow></msubsup><mo>=</mo><mfrac><mrow><mi mathvariant="normal">n</mi></mrow><mrow><mn>0.059</mn></mrow></mfrac><mi mathvariant="normal">l</mi><mi mathvariant="normal">o</mi><mi mathvariant="normal">g</mi><msub><mrow><mi mathvariant="normal">K</mi></mrow><mrow><mi mathvariant="normal">c</mi></mrow></msub></math></span> </li><li class=""> <span class="option-label">D</span> <span class="option-data"><math><msubsup><mrow><mi mathvariant="normal">E</mi></mrow><mrow><mi mathvariant="normal">c</mi><mi mathvariant="normal">e</mi><mi mathvariant="normal">l</mi><mi mathvariant="normal">l</mi></mrow><mrow><mn>0</mn></mrow></msubsup><mo>=</mo><mfrac><mrow><mi mathvariant="normal">l</mi><mi mathvariant="normal">o</mi><mi mathvariant="normal">g</mi><msub><mrow><mi mathvariant="normal">K</mi></mrow><mrow><mi mathvariant="normal">c</mi></mrow></msub></mrow><mrow><mi mathvariant="normal">n</mi></mrow></mfrac></math></span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value"><math><msubsup><mrow><mi mathvariant="normal">E</mi></mrow><mrow><mi mathvariant="normal">c</mi><mi mathvariant="normal">e</mi><mi mathvariant="normal">l</mi><mi mathvariant="normal">l</mi></mrow><mrow><mn>0</mn></mrow></msubsup><mo>=</mo><mfrac><mrow><mn>0.059</mn></mrow><mrow><mi mathvariant="normal">n</mi></mrow></mfrac><mi mathvariant="normal">l</mi><mi mathvariant="normal">o</mi><mi mathvariant="normal">g</mi><msub><mrow><mi mathvariant="normal">K</mi></mrow><mrow><mi mathvariant="normal">c</mi></mrow></msub></math></span> </div>

answer:
<div class="solution">The equilibrium constant and standard reduction potential of cell is given by <math><msubsup><mrow><mi mathvariant="normal">E</mi></mrow><mrow><mi mathvariant="normal">c</mi><mi mathvariant="normal">e</mi><mi mathvariant="normal">l</mi><mi mathvariant="normal">l</mi></mrow><mrow><mi mathvariant="normal">o</mi></mrow></msubsup><mo>=</mo><mfrac><mrow><mn>2.303</mn><mi mathvariant="normal"></mi><mi mathvariant="normal">R</mi><mi mathvariant="normal">T</mi></mrow><mrow><mi mathvariant="normal">n</mi><mi mathvariant="normal">F</mi></mrow></mfrac><mi mathvariant="normal">l</mi><mi mathvariant="normal">o</mi><mi mathvariant="normal">g</mi><mi mathvariant="normal"></mi><mi mathvariant="normal">K</mi><mo>=</mo><mfrac><mrow><mn>0.0591</mn></mrow><mrow><mi mathvariant="normal">n</mi></mrow></mfrac><mi mathvariant="normal">l</mi><mi mathvariant="normal">o</mi><mi mathvariant="normal">g</mi><mi mathvariant="normal"></mi><msub><mrow><mi mathvariant="normal">K</mi></mrow><mrow><mi mathvariant="normal">c</mi></mrow></msub><mi mathvariant="normal"></mi><mi mathvariant="normal">a</mi><mi mathvariant="normal">t</mi><mi mathvariant="normal"></mi><mn>298</mn></math> <math><mi mathvariant="normal">K</mi></math></div>


title: which-is-true-according-to-werners-coordination-theory
slug: which-is-true-according-to-werners-coordination-theory-96303
question: <div class="question">Which is true according to Werner's coordination theory?</div>
tags: ['Chemistry', 'Coordination Compounds', 'NEET']
source_db: MarksBatch2_P4.db
options:
<ul class="options"> <li class="correct"> <span class="option-label">A</span> <span class="option-data">Primary valency can be ionized</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 valency can be ionized</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">Primary and secondary valencies both cannot be ionized</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">Only primary valency cannot be ionized</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">Primary valency can be ionized</span> </div>

answer:
<div class="solution">According to Werner's coordination theory prmary valencies are ionisable while secondary valency which satisfy by ligands are non ionisable.</div>


title: which-is-wrong-about-oogenesis
slug: which-is-wrong-about-oogenesis-86580
question: <div class="question">Which is wrong about oogenesis?</div>
tags: ['Biology', 'Human Reproduction', 'NEET']
source_db: MarksBatch2_P4.db
options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">Diploid oogonia</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">Growth phase</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">Formation of polar bodies</span> </li><li class="correct"> <span class="option-label">D</span> <span class="option-data">Equal meiotic division</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">Equal meiotic division</span> </div>

answer:
<div class="solution">During oogenesis primary oocyte undergoes first meiotic division. This results in the formation of two daughter cells. These are secondary oocyte and a first polar body. These are unequal in size. Polar bodies are much smaller in diameter than the oocyte because the cytoplasm is retained in bulk in the secondary oocyte. This occurs because the secondary oocyte will get converted into ovum and if it gets fertilized will form zygote. Hence the retained cytoplasm will act as stored food for the developing zygote. This is the main difference between oogenesis and meiosis division in other cells.</div>


title: which-isotope-of-hydrogen-is-the-most-abundant
slug: which-isotope-of-hydrogen-is-the-most-abundant-93646
tags: ['Chemistry', 'Hydrogen', 'NEET']
answer: <div class="solution">Correct Option is : 1 <br/> Protium</div>
source_db: MarksBatch2_P4.db
question:
<div class="question"><img src="https://cdn-question-pool.getmarks.app/modules/dbq/cheas77dtry/T0hQJ2uC6LzlqriqRrOqwjLQyzPbyBZJBt6keQ0qrAgrrabz53.png"/>Which isotope of hydrogen is the most abundant?</div>

options:
<ul class="options"> <li class="correct"> <span class="option-label">A</span> <span class="option-data">Protium</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">Deuterium</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">Tritium</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">Hydrogen-2</span> </li> </ul>

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


tags: ['Chemistry', 'Biomolecules', 'NEET']
source_db: MarksBatch2_P4.db
title:
which-level-of-protein-structure-involves-the-spatial-arrangement-of-subunits-in-proteins-composed-of-multiple-polypeptide-chains

slug:
which-level-of-protein-structure-involves-the-spatial-arrangement-of-subunits-in-proteins-composed-of-multiple-polypeptide-chains-64005

question:
<div class="question">Which level of protein structure involves the spatial arrangement of subunits in proteins composed of multiple polypeptide chains?</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">Primary structure</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">Secondary structure</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">Tertiary structure</span> </li><li class="correct"> <span class="option-label">D</span> <span class="option-data">Quaternary structure</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">Quaternary structure</span> </div>

answer:
<div class="solution">Quaternary structure involves the spatial arrangement of subunits in proteins composed of multiple polypeptide chains.</div>


title: which-level-of-protein-structure-represents-the-overall-folding-of-polypeptide-chains
slug: which-level-of-protein-structure-represents-the-overall-folding-of-polypeptide-chains-19917
tags: ['Chemistry', 'Biomolecules', 'NEET']
source_db: MarksBatch2_P4.db
question:
<div class="question">Which level of protein structure represents the overall folding of polypeptide chains?</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">Primary structure</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">Secondary structure</span> </li><li class="correct"> <span class="option-label">C</span> <span class="option-data">Tertiary structure</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">Quaternary structure</span> </li> </ul>

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

answer:
<div class="solution">The tertiary structure of proteins represents the overall folding of polypeptide chains, further shaping the secondary structure.</div>


title: which-ligand-among-the-following-has-highest-splitting-power-of-dorbitals-of-central-metal-ion
tags: ['Chemistry', 'Coordination Compounds', 'MHT CET', 'MHT CET 2020 (15 Oct Shift 1)']
source_db: MarksBatch2_P4.db
slug:
which-ligand-among-the-following-has-highest-splitting-power-of-dorbitals-of-central-metal-ion-64221

question:
<div class="question">Which ligand among the following has highest splitting power of d-orbitals of central metal ion?</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">$\mathrm{S}^{2-}$</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">$\mathrm{OH}^{-}$</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">$\mathrm{NCS}$</span> </li><li class="correct"> <span class="option-label">D</span> <span class="option-data">$\mathrm{CO}$</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">$\mathrm{CO}$</span> </div>

answer:
<div class="solution">The order of boiling point of amines is as follows: Primary $&gt;$ Secondary $&gt;$ Tertiary</div>


title: which-ligand-can-bind-through-two-nitrogen-and-four-oxygen-atoms-to-a-central-metal-ion
slug: which-ligand-can-bind-through-two-nitrogen-and-four-oxygen-atoms-to-a-central-metal-ion-19048
tags: ['Chemistry', 'Coordination Compounds', 'NEET']
source_db: MarksBatch2_P4.db
question:
<div class="question">Which ligand can bind through two nitrogen and four oxygen atoms to a central metal ion?</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">Unidentate</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">Didendate</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">Polydentate</span> </li><li class="correct"> <span class="option-label">D</span> <span class="option-data">Hexadentate</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">Hexadentate</span> </div>

answer:
<div class="solution">Hexadentate ligands, like EDTA4â, can bind through multiple donor atoms, such as two nitrogen and four oxygen atoms.</div>


title: which-ligand-type-can-bind-through-two-donor-atoms
slug: which-ligand-type-can-bind-through-two-donor-atoms-25102
question: <div class="question">Which ligand type can bind through two donor atoms?</div>
tags: ['Chemistry', 'Coordination Compounds', 'NEET']
source_db: MarksBatch2_P4.db
options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">Polydentate</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">Unidentate</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">Hexadentate</span> </li><li class="correct"> <span class="option-label">D</span> <span class="option-data">Didendate</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">Didendate</span> </div>

answer:
<div class="solution">Ligands that can bind through two donor atoms are referred to as didentate ligands.</div>


