# questions

tags: ['Biology', 'Anatomy of Flowering Plants', 'AIIMS', 'AIIMS 2007']
source_db: MarksBatch1_P1.db
title:
assertion-in-woody-stems-the-amount-of-heart-wood-continues-to-increase-year-after-year-reason-the-cambial-activity-continues-uninterrupted

slug:
assertion-in-woody-stems-the-amount-of-heart-wood-continues-to-increase-year-after-year-reason-the-cambial-activity-continues-uninterrupted-13067

question:
<div class="question">Assertion : In woody stems, the amount of heart wood continues to increase year after year.<br/>Reason : The cambial activity continues uninterrupted.</div>

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

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

answer:
<div class="solution">Heartwood formation occurs spontaneously because it is a genetically programmed process. As a result of continued secondary growth for several years, the older parts of the stem and its old branches have a part of its secondary xylem rendered non - functional. Such a modified and non - functional secondary xylem is called the heart wood or duramen, the functional outer younger rings of secondary xylem constitute the sap wood or alburnum. With the passage of time and addition of new outer rings of secondary xylem due to cambial activity more rings of the sap wood are changed into heart wood. This leads to the increase in the thickness of heart wood, whereas the sap wood remains of about the same thickness.</div>


tags: ['Chemistry', 'General Organic Chemistry', 'AIIMS', 'AIIMS 2010']
source_db: MarksBatch1_P1.db
title:
assertion-is-3carbethoxy-2butenoic-acid-reason-principal-functional-group-gets-lowest-number-followed-by-double-bond-or-triple-bond

slug:
assertion-is-3carbethoxy-2butenoic-acid-reason-principal-functional-group-gets-lowest-number-followed-by-double-bond-or-triple-bond-95086

question:
<div class="question">$$<br/>\text { Assertion : }<br/>$$<br/><img src="https://cdn-question-pool.getmarks.app/pyq/aiims/eRFuVOSVGKqnZqTkY7CESDmzLXknAkjhlvDT48GmLO4.original.fullsize.png"/><br/><br/>is 3-carbethoxy- 2-butenoic acid.<br/>Reason : Principal functional group gets lowest number followed by double bond or triple bond.</div>

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

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

answer:
<div class="solution"><img src="https://cdn-question-pool.getmarks.app/pyq/aiims/4rXRQdMI7hxz3NA0h8vuTQS1mHBZMlT6egItntMsPNo.original.fullsize.png"/><br/><br/>Here since $-\mathrm{COOH}$ is the principal functional group, it gets the lowest number than the secondary functional group (3-carbethoxy). So it is 3-carbethoxy-2-butenoic acid.</div>


tags: ['Chemistry', 'd and f Block Elements', 'AIIMS', 'AIIMS 2015']
source_db: MarksBatch1_P1.db
title:
assertion-k-2-cr-2-o-7-is-used-as-primary-standard-in-volumetric-analysis-reason-it-has-a-good-solubility-in-water-1

slug:
assertion-k-2-cr-2-o-7-is-used-as-primary-standard-in-volumetric-analysis-reason-it-has-a-good-solubility-in-water-1-16432

question:
<div class="question">Assertion: $\mathrm{K}_2 \mathrm{Cr}_2 \mathrm{O}_7$ is used as primary standard in volumetric analysis.<br/>Reason : It has a good solubility in water.</div>

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

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

answer:
<div class="solution">$\mathrm{K}_2 \mathrm{Cr}_2 \mathrm{O}_7$ is less soluble in water. It can be found in pure state and can be accurately weighed. It is not hygroscopic in nature. So, $\mathrm{K}_2 \mathrm{Cr}_2 \mathrm{O}_7$ is used as a primary standard solution.</div>


tags: ['Chemistry', 'd and f Block Elements', 'AIIMS', 'AIIMS 2006']
source_db: MarksBatch1_P1.db
title:
assertion-k-2-cr-2-o-7-is-used-as-primary-standard-in-volumetric-analysis-reason-it-has-a-good-solubility-in-water

slug:
assertion-k-2-cr-2-o-7-is-used-as-primary-standard-in-volumetric-analysis-reason-it-has-a-good-solubility-in-water-62886

question:
<div class="question">Assertion : $\mathrm{K}_2 \mathrm{Cr}_2 \mathrm{O}_7$ is used as primary standard in volumetric analysis.<br/>Reason : It has a good solubility in water.</div>

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

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

answer:
<div class="solution">$\mathrm{K}_2 \mathrm{Cr}_2 \mathrm{O}_7$ is less soluble in water. $\mathrm{K}_2 \mathrm{Cr}_2 \mathrm{O}_7$ can be found in pure state and can be accurately weighed. It is not hygroscopic in nature. So $\mathrm{K}_2 \mathrm{Cr}_2 \mathrm{O}_7$ is used as a primary standard solution.</div>


tags: ['Biology', 'Ecosystem', 'AIIMS', 'AIIMS 2018 (27 May)']
source_db: MarksBatch1_P1.db
title:
assertion-net-primary-productivity-is-gross-primary-productivity-minus-respiration-reason-secondary-productivity-is-produced-by-heterotrophs

slug:
assertion-net-primary-productivity-is-gross-primary-productivity-minus-respiration-reason-secondary-productivity-is-produced-by-heterotrophs-83213

question:
<div class="question">Assertion : Net primary productivity is gross primary productivity minus respiration.<br/>Reason : Secondary productivity is produced by heterotrophs.</div>

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

answer:
<div class="solution">Net primary productivity is the rate of organic matter built up or stored by producers in their bodies in a unit area/volume per unit time. Net productivity is equal to gross primary productivity minus loss due to respiration and other reasons. Rate of increase in energy containing organic matter or biomass by heterotrophs or consumers per unit time and area is known as secondary productivity.</div>


tags: ['Biology', 'Anatomy of Flowering Plants', 'AIIMS', 'AIIMS 2015']
source_db: MarksBatch1_P1.db
title:
assertion-no-secondary-growth-takes-place-in-monocots-reason-secondary-growth-is-not-related-with-cambium

slug:
assertion-no-secondary-growth-takes-place-in-monocots-reason-secondary-growth-is-not-related-with-cambium-93985

question:
<div class="question">Assertion : No secondary growth takes place in monocots.<br/>Reason : Secondary growth is not related with cambium.</div>

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

answer:
<div class="solution">Secondary growth is the growth in thickness due to the formation of secondary tissues by lateral meristems. With the exception of some annuals, most of the dicots and gymnosperms show secondary growth in their stems and roots. It takes place by the production of two types of secondary tissues : secondary vascular tissues and periderm. These tissues are formed by meristems, vascular cambium and cork cambium respectively. Secondary growth does not occur in monocots because monocots do not possess vascular cambium in between the vascular bundles.</div>


title: assertion-ohms-law-is-applicable-for-all-conducting-elements-reason-ohms-law-is-a-fundamental-law
tags: ['Physics', 'Current Electricity', 'AIIMS', 'AIIMS 2007']
source_db: MarksBatch1_P1.db
slug:
assertion-ohms-law-is-applicable-for-all-conducting-elements-reason-ohms-law-is-a-fundamental-law-91337

question:
<div class="question">Assertion : Ohm's law is applicable for all conducting elements.<br/>Reason : Ohm's law is a fundamental law.</div>

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

answer:
<div class="solution">Both the assertion and reason are false. Ohms law is obeyed by metals for a certain range of temperature, not obeyed by superconductors, valves, diodes and semiconductors. It is not a universal law but it is purely empirical.</div>


tags: ['Chemistry', 'Some Basic Concepts of Chemistry']
source_db: MarksBatch1_P1.db
title:
assertion-one-atomic-mass-unit-is-defined-as-one-twelfth-of-the-mass-of-one-carbon-12-atom-reason-carbon-12-isotope-is-the-most-abundant-isotope-of-ca

slug:
assertion-one-atomic-mass-unit-is-defined-as-one-twelfth-of-the-mass-of-one-carbon-12-atom-reason-carbon-12-isotope-is-the-most-abundant-isotope-of-ca-98000

question:
<div class="question">Assertion : One atomic mass unit is defined as one twelfth of the mass of one carbon$-12$ atom.<br/>Reason : Carbon$-12$ isotope is the most abundant isotope of carbon and has been chosen as standard.</div>

options:
<ul class="options"> <li class="correct"> <span class="option-label">A</span> <span class="option-data"><br/>If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.<br/></span> <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/>If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.<br/></span> </li><li class=""> <span class="option-label">C</span> <span class="option-data"><br/>If the Assertion is correct but Reason is incorrect.<br/></span> </li><li class=""> <span class="option-label">D</span> <span class="option-data"><br/>If the Assertion is incorrect but the Reason is correct.</span> </li> </ul>

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

answer:
<div class="solution">One atomic mass unit is defined as a mass exactly equal to one-twelfth of the mass of one carbon$-12$ atom. Carbon$- 12$ has been choosen as standard as it is most abundant isotope of carbon.</div>


tags: ['Biology', 'Plant Kingdom', 'AIIMS', 'AIIMS 2018 (26 May)']
source_db: MarksBatch1_P1.db
title:
assertion-red-algae-contribute-in-producing-coral-reefs-reason-some-red-algae-secrete-and-deposit-calcium-carbonate-over-their-walls-1

slug:
assertion-red-algae-contribute-in-producing-coral-reefs-reason-some-red-algae-secrete-and-deposit-calcium-carbonate-over-their-walls-1-56478

question:
<div class="question">Assertion : Red algae contribute in producing coral reefs.<br/>Reason: Some red algae secrete and deposit calcium carbonate over their walls.</div>

answer:
<div class="solution">Coral reefs are formed through the accumulation of calcareous exoskeletons of coral animals, calcareous red algae and molluscs. They form the foundation of reefs by secreting a calcium carbonate skeleton that provides protection for the coral polyps.</div>


tags: ['Biology', 'Plant Kingdom', 'AIIMS', 'AIIMS 2004']
source_db: MarksBatch1_P1.db
title:
assertion-red-algae-contribute-in-producing-coral-reefs-reason-some-red-algae-secrete-and-deposit-calcium-carbonate-over-their-walls

slug:
assertion-red-algae-contribute-in-producing-coral-reefs-reason-some-red-algae-secrete-and-deposit-calcium-carbonate-over-their-walls-30574

question:
<div class="question">Assertion : Red algae contribute in producing coral reefs.<br/>Reason : Some red algae secrete and deposit calcium carbonate over their walls.</div>

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

answer:
<div class="solution">In some species of red algae called coralline algae, the cell walls become hardened with calcium carbonate. These algae hence important for the formation of coral reefs.<br/>Coral reefs are formed through the accumulation of calcareous exoskeletons of coral animals, calcareous red algae and molluses. They form the foundation of reefs by secreting a calcium carbonate skeleton that provides protection for the coral polyps. Calcium carbonate is secreted continuously by the coral colony.</div>


tags: ['Biology', 'Respiration in Plants', 'AIIMS', 'AIIMS 2019 (26 May)']
source_db: MarksBatch1_P1.db
title:
assertion-respiratory-pathway-is-considered-as-an-amphibolic-pathway-reason-respiratory-pathway-involves-both-anabolism-and-catabolism

slug:
assertion-respiratory-pathway-is-considered-as-an-amphibolic-pathway-reason-respiratory-pathway-involves-both-anabolism-and-catabolism-84234

question:
<div class="question">Assertion : Respiratory pathway is considered as an amphibolic pathway.<br/>Reason : Respiratory pathway involves both anabolism and catabolism.</div>

answer:
<div class="solution">Amphibolic pathway is the one which is used for both breakdown (catabolism) and build-up (anabolism) reactions. Respiratory pathway is mainly a catabolic process which serves to run the living system by providing energy. However, the pathway produces a number of intermediates. Many of them are raw materials for building up both primary and secondary metabolites.</div>


tags: ['Biology', 'Environmental Issues', 'AIIMS', 'AIIMS 2014']
source_db: MarksBatch1_P1.db
title:
assertion-secondary-air-pollutants-are-formed-by-interaction-among-the-primary-pollutants-and-are-more-toxic-reason-ddt-is-a-secondary-air-pollutant

slug:
assertion-secondary-air-pollutants-are-formed-by-interaction-among-the-primary-pollutants-and-are-more-toxic-reason-ddt-is-a-secondary-air-pollutant-27228

question:
<div class="question">Assertion : Secondary air pollutants are formed by interaction among the primary pollutants and are more toxic.<br/>Reason: DDT is a secondary air pollutant.</div>

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

answer:
<div class="solution">Secondary air pollutants are produced photo-chemically from primary pollutants. Smog, photochemical smog, ozone and PAN all are secondary air pollutants. DDT is a primary soil pollutant.</div>


tags: ['Biology', 'Biomolecules (B)', 'AIIMS', 'AIIMS 2017']
source_db: MarksBatch1_P1.db
title:
assertion-secondary-metabolites-are-produced-in-small-quantities-and-their-extraction-from-the-plant-is-difficult-and-expensive-reason-secondary-metab-1

slug:
assertion-secondary-metabolites-are-produced-in-small-quantities-and-their-extraction-from-the-plant-is-difficult-and-expensive-reason-secondary-metab-1-10448

question:
<div class="question">Assertion: Secondary metabolites are produced in small quantities and their extraction from the plant is difficult and expensive.<br/>Reason : Secondary metabolites can be commercially produced by using tissue culture technique.</div>

answer:
<div class="solution">Secondary metabolites are biosynthetically derived from primary metabolites but more limited in distribution in plant kingdom, being restricted to a particular taxonomic group. Secondary metabolites are accumulated by plants in smaller quantities as compared to primary metabolites. Also, they are synthesised in specialised cell types at distinct developmental stages, making their extraction and purification difficult and expensive. By the culture media using tissue culture techniques, secondary metabolites can be produced on a large scale.</div>


tags: ['Biology', 'Biomolecules (B)', 'AIIMS', 'AIIMS 2015']
source_db: MarksBatch1_P1.db
title:
assertion-secondary-metabolites-are-produced-in-small-quantities-and-their-extraction-from-the-plant-is-difficult-and-expensive-reason-secondary-metab

slug:
assertion-secondary-metabolites-are-produced-in-small-quantities-and-their-extraction-from-the-plant-is-difficult-and-expensive-reason-secondary-metab-16792

question:
<div class="question">Assertion : Secondary metabolites are produced in small quantities and their extraction from the plant is difficult and expensive.<br/>Reason: Secondary metabolites can be commercially produced by using tissue culture technique.</div>

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

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

answer:
<div class="solution">Secondary metabolites are biosynthetically derived from primary metabolites but more limited in distribution in plant kingdom, being restricted to a particular taxonomic group. Secondary metabolites are accumulated by plants in smaller quantities than are primary metabolites. Also, they are synthesised in specialised cell types and at distinct developmental stages, making their extraction and purification difficult and expensive. By the culture media using tissue culture techniques, secondary metabolites can be produced on a large scale.</div>


tags: ['Biology', 'Ecosystem', 'AIIMS', 'AIIMS 2009']
source_db: MarksBatch1_P1.db
title:
assertion-secondary-succession-takes-place-in-recently-denuded-area-reason-it-is-caused-due-to-baring-of-an-area

slug:
assertion-secondary-succession-takes-place-in-recently-denuded-area-reason-it-is-caused-due-to-baring-of-an-area-47594

question:
<div class="question">Assertion : Secondary succession takes place in recently denuded area.<br/>Reason : It is caused due to baring of an area.</div>

answer:
<div class="solution">Biotic or ecological succession is the formation of a series of biotic communities at the same site over a period of time one after the other, till a stable climax community develops over the area. It occurs generally in bare areas. Primary succession takes place on a biological sterile soilless primary barren area. Secondary succession takes place in a recently denuded area which still contains a lot of organic debris, remains and propagules of previous living organisms. The area has become bared due to destruction of the community previously present. The baring of an area can be caused due to forest fire, deforestation for wood, timber and habitat, overgrazing, landslides or earthquakes, excessive and repeated droughts, fallowing a cropland and repeated floods.</div>


tags: ['Chemistry', 'Solutions', 'AP EAMCET', 'AP EAMCET 2020 (18 Sep Shift 1)']
source_db: MarksBatch1_P1.db
title:
assertion-standard-boiling-point-of-a-liquid-is-slightly-higher-than-the-normal-boiling-point-reason-i-bar-pressure-is-slightly-less-than-i-atm-pressu

slug:
assertion-standard-boiling-point-of-a-liquid-is-slightly-higher-than-the-normal-boiling-point-reason-i-bar-pressure-is-slightly-less-than-i-atm-pressu-75750

question:
<div class="question">Assertion Standard boiling point of a liquid is slightly higher than the normal boiling point.<br/>Reason I bar pressure is slightly less than I atm pressure.</div>

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

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">Assertion is incorrect, Reason is correct.</span> </div>

answer:
<div class="solution">Assertion It is incorrect because standard boiling point (b.p. at 1 bar pressure) of a liquid is slightly lower than the normal boiling point (b.p. at \(1 \mathrm{~atm}\) pressure). It is because 1 bar pressure is slightly lower than \(1 \mathrm{~atm}\) pressure.<br/>Reason It is correct because \(1 \mathrm{~atm}=1.01325\) bar.<br/>Since, Assertion is incorrect, Reason is correct.</div>


tags: ['Physics', 'Electromagnetic Waves', 'AIIMS', 'AIIMS 2006']
answer: <div class="solution">No Solution Available</div>
source_db: MarksBatch1_P1.db
title:
assertion-standard-optical-diffraction-gratings-cannot-be-used-for-discriminating-between-different-x-ray-wavelengths-reason-the-grating-spacing-is-no

slug:
assertion-standard-optical-diffraction-gratings-cannot-be-used-for-discriminating-between-different-x-ray-wavelengths-reason-the-grating-spacing-is-no-79724

question:
<div class="question">Assertion : Standard optical diffraction gratings cannot be used for discriminating between different $\mathrm{X}$-ray wavelengths.<br/>Reason : The grating spacing is not of the order of $\mathrm{X}$-ray wavelengths.</div>

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

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


tags: ['Physics', 'Electrostatics', 'AIIMS', 'AIIMS 2003']
source_db: MarksBatch1_P1.db
title:
assertion-the-coulomb-force-is-dominating-force-in-the-universe-reason-the-coulomb-force-is-weaker-than-the-gravitational-force

slug:
assertion-the-coulomb-force-is-dominating-force-in-the-universe-reason-the-coulomb-force-is-weaker-than-the-gravitational-force-62851

question:
<div class="question">Assertion : The Coulomb force is dominating force in the universe.<br/>Reason : The Coulomb force is weaker than the gravitational force.</div>

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

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

answer:
<div class="solution">The dominating force in the universe is the gravitational force. Because the gravitational force of attraction exists between any two bodies in the universe. Moreover it is the weakest of all the four fundamental forces in nature.</div>


tags: ['Mathematics', 'Hyperbola', 'TS EAMCET', 'TS EAMCET 2022 (20 Jul Shift 1)']
source_db: MarksBatch1_P1.db
title:
assertion-the-distance-between-the-points-p-4-and-p-3-on-the-hyperbola-9-x-2-16-y-2-9-is-2-2-1-66-33-2-9-3-r-e-a-so-n-xa-cosh-t-yb-sin-mathrmh-t-a-re-

slug:
assertion-the-distance-between-the-points-p-4-and-p-3-on-the-hyperbola-9-x-2-16-y-2-9-is-2-2-1-66-33-2-9-3-r-e-a-so-n-xa-cosh-t-yb-sin-mathrmh-t-a-re-28028

question:
<div class="question">Assertion : The distance between the points $p\left(\frac{\pi}{4}\right)$ and $p\left(\frac{\pi}{3}\right)$ on the hyperbola $9 x^2+16 y^2=9$ is<br/>$$<br/>\frac{1}{2 \sqrt{2}} \sqrt{66-33 \sqrt{2}-9 \sqrt{3}}<br/>$$<br/>Reason : $x=a \cosh t, y=b \sin \mathrm{h} t$ are the parametric equations of the hyperbola $\frac{x^2}{a^2}-\frac{y^2}{b^2}=1$ <br/>The correct option among the following is</div>

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

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

answer:
<div class="solution">Given equation of hyper bola is $9 x^2+16 y^2=9$ which is not in the standard form of hyper bola. Equation of hyperbola should be $9 x^2-16 y^2=9$<br/>$\frac{x^2}{(1)^2}-\frac{y^2}{\left(\frac{3}{4}\right)^2}=1$<br/>So, $a=1$ and $b=\frac{3}{4}$.<br/>$$<br/>\text { Point } \begin{aligned}<br/>\mathrm{P}\left(\frac{\pi}{4}\right) &amp; =(\mathrm{a} \sec \theta, \mathrm{b} \tan \theta) \\<br/>&amp; =\left(1 \sec \left(\frac{\pi}{4}\right), \frac{3}{4} \tan \frac{\pi}{4}\right) \\<br/>&amp; =\left(\sqrt{2}, \frac{3}{4}\right)<br/>\end{aligned}<br/>$$<br/>Point $\mathrm{P}\left(\frac{\pi}{3}\right)=(\mathrm{a} \sec \theta, \mathrm{b} \tan \theta)$<br/>$$<br/>\begin{aligned}<br/>&amp; =\left(1 \sec \left(\frac{\pi}{3}\right), \frac{3}{4} \tan \left(\frac{\pi}{3}\right)\right) \\<br/>&amp; =\left(2, \frac{3}{4} \sqrt{3}\right)<br/>\end{aligned}<br/>$$<br/>$$<br/>\begin{aligned}<br/>&amp; \text { Required distance } \mathrm{D}=\sqrt{(2-\sqrt{2})^2+\left(\frac{3}{4} \sqrt{3}-\frac{3}{4}\right)^2} \\<br/>&amp; \qquad \begin{aligned}<br/>\mathrm{D} &amp; =\sqrt{4+2-4 \sqrt{2}+\frac{27}{16}+\frac{9}{16}-\frac{18}{16} \sqrt{3}} \\<br/>\mathrm{D} &amp; =\sqrt{\frac{132-64 \sqrt{2}-18 \sqrt{3}}{16}}<br/>\end{aligned}<br/>\end{aligned}<br/>$$<br/>$$<br/>\mathrm{D}=\frac{1}{2 \sqrt{2}} \sqrt{66-32 \sqrt{2}-9 \sqrt{3}}<br/>$$<br/>So, Asseration is true but Reason of the parametric equation of hyperbola is incorrect because $\mathrm{x}=\operatorname{asec} \theta$ and $\mathrm{y}=$ $\mathrm{b} \tan \theta$.<br/>So, option (c) is correct</div>


tags: ['Physics', 'Waves and Sound', 'AIIMS', 'AIIMS 2015']
answer: <div class="solution">No Solution Available</div>
source_db: MarksBatch1_P1.db
title:
assertion-the-fundamental-frequency-of-an-open-organ-pipe-increases-as-the-temperature-is-increased-reason-this-is-because-as-the-temperature-increase

slug:
assertion-the-fundamental-frequency-of-an-open-organ-pipe-increases-as-the-temperature-is-increased-reason-this-is-because-as-the-temperature-increase-93301

question:
<div class="question">Assertion : The fundamental frequency of an open organ pipe increases as the temperature is increased.<br/>Reason : This is because as the temperature increases, the velocity of sound increases more rapidly than length of the pipe.</div>

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


tags: ['Physics', 'Semiconductors', 'AIIMS', 'AIIMS 2011']
answer: <div class="solution">The transistor can be used as a switch, amplifier and oscillator.</div>
source_db: MarksBatch1_P1.db
title:
assertion-transistor-can-be-used-as-a-switch-reason-both-linear-and-nonlinear-voltage-bias-dependance-occurs-in-it

slug:
assertion-transistor-can-be-used-as-a-switch-reason-both-linear-and-nonlinear-voltage-bias-dependance-occurs-in-it-47367

question:
<div class="question">Assertion : Transistor can be used as a switch. <br/>Reason: Both linear and non-linear voltage bias dependance occurs in it.</div>


tags: ['Physics', 'Alternating Current', 'AIIMS', 'AIIMS 2002']
source_db: MarksBatch1_P1.db
title:
assertion-we-use-a-thick-wire-in-the-secondary-of-a-step-down-transformer-to-reduce-the-production-heat-reason-when-the-plane-of-the-armature-is-paral

slug:
assertion-we-use-a-thick-wire-in-the-secondary-of-a-step-down-transformer-to-reduce-the-production-heat-reason-when-the-plane-of-the-armature-is-paral-68258

question:
<div class="question">Assertion : We use a thick wire in the secondary of a step down transformer to reduce the production heat.<br/>Reason : When the plane of the armature is parallel to the line of force of magnetic field, the magnitude of induced e.m.f. is maximum.</div>

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

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

answer:
<div class="solution">A step-down transformer converts electrical energy from a high voltage to one at a low voltage. Accordingly the current in the secondary will be larger than that in the primary. In order to produce less heat in the secondary, we use a wire of lesser resistance i.e. thick wire. We also know that when the plane of the armature is parallel to the lines of force of magnetic field, the rate of change of magnetic flux linked with it is maximum. Therefore the e.m.f. induced in the armature in this orientation is maximum.</div>


tags: ['Physics', 'Units and Dimensions', 'JEE Main']
source_db: MarksBatch1_P1.db
title:
assume-that-the-drag-force-on-a-football-depends-only-on-the-density-of-the-air-velocity-of-the-ball-and-the-crosssectional-area-of-the-ball-balls-of--1

slug:
assume-that-the-drag-force-on-a-football-depends-only-on-the-density-of-the-air-velocity-of-the-ball-and-the-crosssectional-area-of-the-ball-balls-of-1-84903

question:
<div class="question">Assume that, the drag force on a football depends only on the density of the air, velocity of the ball and the cross-sectional area of the ball. Balls of different sizes but the same density are dropped in an air column. The terminal velocity reached by balls of masses <math xmlns="http://www.w3.org/1998/Math/MathML"><mn>250</mn><mo> </mo><mi mathvariant="normal">g</mi></math> and <math xmlns="http://www.w3.org/1998/Math/MathML"><mn>125</mn><mo> </mo><mi mathvariant="normal">g</mi></math> are in the ratio</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"><msup><mn>2</mn><mrow><mn>1</mn><mo>/</mo><mn>6</mn></mrow></msup></math></span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li><li class=""> <span class="option-label">B</span> <span class="option-data"><math xmlns="http://www.w3.org/1998/Math/MathML"><msup><mn>2</mn><mrow><mn>1</mn><mo>/</mo><mn>3</mn></mrow></msup></math></span> </li><li class=""> <span class="option-label">C</span> <span class="option-data"><math xmlns="http://www.w3.org/1998/Math/MathML"><msup><mn>2</mn><mrow><mn>1</mn><mo>/</mo><mn>2</mn></mrow></msup></math></span> </li><li class=""> <span class="option-label">D</span> <span class="option-data"><math xmlns="http://www.w3.org/1998/Math/MathML"><msup><mn>2</mn><mrow><mn>2</mn><mo>/</mo><mn>3</mn></mrow></msup></math></span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value"><math xmlns="http://www.w3.org/1998/Math/MathML"><msup><mn>2</mn><mrow><mn>1</mn><mo>/</mo><mn>6</mn></mrow></msup></math></span> </div>

answer:
<div class="solution"><p>Given, drag force <math xmlns="http://www.w3.org/1998/Math/MathML"><msub><mi>F</mi><mi>d</mi></msub></math> depends on air density <math xmlns="http://www.w3.org/1998/Math/MathML"><mi>σ</mi></math>, velocity of ball <math xmlns="http://www.w3.org/1998/Math/MathML"><mi>v</mi></math> and area of cross-section of ball <math xmlns="http://www.w3.org/1998/Math/MathML"><mi>A</mi></math>.<br/><br/><math xmlns="http://www.w3.org/1998/Math/MathML"><mo>∴</mo></math><math xmlns="http://www.w3.org/1998/Math/MathML"><msub><mi>F</mi><mi>d</mi></msub><mo>∝</mo><msup><mi>σ</mi><mi>a</mi></msup><msup><mi>v</mi><mi>b</mi></msup><msup><mi>A</mi><mi>c</mi></msup></math></p><br/><br/><p>Substituting dimensions of different physical quantities, we have<br/><br/><math xmlns="http://www.w3.org/1998/Math/MathML"><mfenced close="]" open="["><mrow><mi>M</mi><mi>L</mi><msup><mi>T</mi><mrow><mo>-</mo><mn>2</mn></mrow></msup></mrow></mfenced><mo>=</mo><msup><mfenced close="]" open="["><mrow><mi>M</mi><msup><mi>L</mi><mrow><mo>-</mo><mn>3</mn></mrow></msup></mrow></mfenced><mi>a</mi></msup><msup><mfenced close="]" open="["><mrow><mi>L</mi><msup><mi>T</mi><mrow><mo>-</mo><mn>1</mn></mrow></msup></mrow></mfenced><mi>b</mi></msup><msup><mfenced close="]" open="["><mrow><mo> </mo><msup><mi>L</mi><mn>2</mn></msup></mrow></mfenced><mi>c</mi></msup></math></p><br/><br/><p>Equating dimensions of fundamental quantities, we have</p><br/><br/><p><math xmlns="http://www.w3.org/1998/Math/MathML"><mi>a</mi><mo>=</mo><mn>1</mn><mo>.</mo><mo>.</mo><mo>.</mo><mo>.</mo><mfenced><mi mathvariant="normal">i</mi></mfenced></math></p><br/><br/><p><math xmlns="http://www.w3.org/1998/Math/MathML"><mo>-</mo><mn>3</mn><mi>a</mi><mo>+</mo><mi>b</mi><mo>+</mo><mn>2</mn><mi>c</mi><mo>=</mo><mn>1</mn><mo>.</mo><mo>.</mo><mo>.</mo><mo>.</mo><mfenced><mi>ii</mi></mfenced></math></p><br/><br/><p><math xmlns="http://www.w3.org/1998/Math/MathML"><mo>-</mo><mi>b</mi><mo>=</mo><mo>-</mo><mn>2</mn><mo>⇒</mo><mi>b</mi><mo>=</mo><mn>2</mn><mo>.</mo><mo>.</mo><mo>.</mo><mo>.</mo><mfenced><mi>iii</mi></mfenced></math></p><br/><br/><p>Putting the values of <math xmlns="http://www.w3.org/1998/Math/MathML"><mi>a</mi></math> and <math xmlns="http://www.w3.org/1998/Math/MathML"><mi>b</mi></math> in Eq (ii), we get</p><br/><br/><p><math xmlns="http://www.w3.org/1998/Math/MathML"><mo>⇒</mo><mo>-</mo><mn>3</mn><mo>×</mo><mn>1</mn><mo>+</mo><mn>2</mn><mo>+</mo><mn>2</mn><mi>c</mi><mo>=</mo><mn>1</mn><mo>⇒</mo><mi>c</mi><mo>=</mo><mn>1</mn></math></p><br/><br/><p><math xmlns="http://www.w3.org/1998/Math/MathML"><mo>∵</mo><mi>a</mi><mo>=</mo><mn>1</mn><mo>,</mo><mi>b</mi><mo>=</mo><mn>2</mn><mo>,</mo><mi>c</mi><mo>=</mo><mn>1</mn></math></p><br/><br/><p>So, drag force on football is</p><br/><br/><p><math xmlns="http://www.w3.org/1998/Math/MathML"><msub><mi>F</mi><mi>d</mi></msub><mo>=</mo><mi>k</mi><mo>·</mo><mi>σ</mi><mo>·</mo><msup><mi>v</mi><mn>2</mn></msup><mo>·</mo><mi>A</mi></math></p><br/><br/><p>When football reaches terminal speed, its weight is balanced by drag force.</p><br/><br/><p><math xmlns="http://www.w3.org/1998/Math/MathML"><mo>⇒</mo></math><math xmlns="http://www.w3.org/1998/Math/MathML"><mi>m</mi><mi>g</mi><mo>=</mo><msub><mi>F</mi><mi>d</mi></msub></math></p><br/><br/><p><math xmlns="http://www.w3.org/1998/Math/MathML"><mo>⇒</mo></math><math xmlns="http://www.w3.org/1998/Math/MathML"><mi>m</mi><mi>g</mi><mo>=</mo><mi>k</mi><mi>σ</mi><msubsup><mi>v</mi><mi>T</mi><mn>2</mn></msubsup><mi>A</mi></math></p><br/><br/><p>where, <math xmlns="http://www.w3.org/1998/Math/MathML"><msub><mi>u</mi><mi>T</mi></msub><mo>=</mo></math>terminal speed of football.</p><br/><br/><p><math xmlns="http://www.w3.org/1998/Math/MathML"><mo>⇒</mo><mi>m</mi><mi>g</mi><mo>=</mo><mi>k</mi><mi>σ</mi><msubsup><mi>v</mi><mi>T</mi><mn>2</mn></msubsup><mi>π</mi><msup><mi>R</mi><mn>2</mn></msup></math></p><br/><br/><p><math xmlns="http://www.w3.org/1998/Math/MathML"><mo>⇒</mo><mi>m</mi><mi>g</mi><mo>=</mo><mi>k</mi><mi>σ</mi><msubsup><mi>u</mi><mi>T</mi><mn>2</mn></msubsup><mi>π</mi><msup><mfenced><mfrac><mi>m</mi><mrow><mfrac><mn>4</mn><mn>3</mn></mfrac><mi>π</mi><mi>ρ</mi></mrow></mfrac></mfenced><mfrac><mn>2</mn><mn>3</mn></mfrac></msup></math></p><br/><br/><p>[ from <math xmlns="http://www.w3.org/1998/Math/MathML"><mi>m</mi><mo>=</mo><mfrac><mn>4</mn><mn>3</mn></mfrac><mi>π</mi><msup><mi>R</mi><mn>3</mn></msup><mi>ρ</mi></math> where <math xmlns="http://www.w3.org/1998/Math/MathML"><mi>ρ</mi><mo>=</mo></math> density of football]</p><br/><br/><p><math xmlns="http://www.w3.org/1998/Math/MathML"><mo>⇒</mo><msub><mi>v</mi><mi>T</mi></msub><mo>∝</mo><msup><mi>m</mi><mrow><mn>1</mn><mo>/</mo><mn>6</mn></mrow></msup></math></p><br/><br/><p><math xmlns="http://www.w3.org/1998/Math/MathML"><mo>⇒</mo><mfrac><msub><mi>v</mi><mn>1</mn></msub><msub><mi>v</mi><mn>2</mn></msub></mfrac><mo>=</mo><msup><mfenced><mfrac><msub><mi>m</mi><mn>1</mn></msub><msub><mi>m</mi><mn>2</mn></msub></mfrac></mfenced><mfrac><mn>1</mn><mn>6</mn></mfrac></msup><mo>=</mo><msup><mfenced><mfrac><mn>250</mn><mn>125</mn></mfrac></mfenced><mfrac><mn>1</mn><mn>6</mn></mfrac></msup><mo>=</mo><msup><mn>2</mn><mrow><mn>1</mn><mo>/</mo><mn>6</mn></mrow></msup></math></p><br/></div>


tags: ['Physics', 'Units and Dimensions', 'KVPY', 'KVPY 2018 (SB/SX)']
source_db: MarksBatch1_P1.db
title:
assume-that-the-drag-force-on-a-football-depends-only-on-the-density-of-the-air-velocity-of-the-ball-and-the-crosssectional-area-of-the-ball-balls-of-

slug:
assume-that-the-drag-force-on-a-football-depends-only-on-the-density-of-the-air-velocity-of-the-ball-and-the-crosssectional-area-of-the-ball-balls-of-23976

question:
<div class="question">Assume that, the drag force on a football depends only on the density of the air, velocity of the ball and the cross-sectional area of the ball. Balls of different sizes but the same density are dropped in an air column. The terminal velocity reached by balls of masses <math xmlns="http://www.w3.org/1998/Math/MathML"><mn>250</mn><mo> </mo><mi mathvariant="normal">g</mi></math> and <math xmlns="http://www.w3.org/1998/Math/MathML"><mn>125</mn><mo> </mo><mi mathvariant="normal">g</mi></math> are in the ratio</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"><msup><mn>2</mn><mrow><mn>1</mn><mo>/</mo><mn>6</mn></mrow></msup></math></span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li><li class=""> <span class="option-label">B</span> <span class="option-data"><math xmlns="http://www.w3.org/1998/Math/MathML"><msup><mn>2</mn><mrow><mn>1</mn><mo>/</mo><mn>3</mn></mrow></msup></math></span> </li><li class=""> <span class="option-label">C</span> <span class="option-data"><math xmlns="http://www.w3.org/1998/Math/MathML"><msup><mn>2</mn><mrow><mn>1</mn><mo>/</mo><mn>2</mn></mrow></msup></math></span> </li><li class=""> <span class="option-label">D</span> <span class="option-data"><math xmlns="http://www.w3.org/1998/Math/MathML"><msup><mn>2</mn><mrow><mn>2</mn><mo>/</mo><mn>3</mn></mrow></msup></math></span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value"><math xmlns="http://www.w3.org/1998/Math/MathML"><msup><mn>2</mn><mrow><mn>1</mn><mo>/</mo><mn>6</mn></mrow></msup></math></span> </div>

answer:
<div class="solution"><p>Given, drag force <math xmlns="http://www.w3.org/1998/Math/MathML"><msub><mi>F</mi><mi>d</mi></msub></math> depends on air density <math xmlns="http://www.w3.org/1998/Math/MathML"><mi>σ</mi></math>, velocity of ball <math xmlns="http://www.w3.org/1998/Math/MathML"><mi>v</mi></math> and area of cross-section of ball <math xmlns="http://www.w3.org/1998/Math/MathML"><mi>A</mi></math>.<br/><br/><math xmlns="http://www.w3.org/1998/Math/MathML"><mo>∴</mo></math><math xmlns="http://www.w3.org/1998/Math/MathML"><msub><mi>F</mi><mi>d</mi></msub><mo>∝</mo><msup><mi>σ</mi><mi>a</mi></msup><msup><mi>v</mi><mi>b</mi></msup><msup><mi>A</mi><mi>c</mi></msup></math></p><br/><br/><p>Substituting dimensions of different physical quantities, we have<br/><br/><math xmlns="http://www.w3.org/1998/Math/MathML"><mfenced close="]" open="["><mrow><mi>M</mi><mi>L</mi><msup><mi>T</mi><mrow><mo>-</mo><mn>2</mn></mrow></msup></mrow></mfenced><mo>=</mo><msup><mfenced close="]" open="["><mrow><mi>M</mi><msup><mi>L</mi><mrow><mo>-</mo><mn>3</mn></mrow></msup></mrow></mfenced><mi>a</mi></msup><msup><mfenced close="]" open="["><mrow><mi>L</mi><msup><mi>T</mi><mrow><mo>-</mo><mn>1</mn></mrow></msup></mrow></mfenced><mi>b</mi></msup><msup><mfenced close="]" open="["><mrow><mo> </mo><msup><mi>L</mi><mn>2</mn></msup></mrow></mfenced><mi>c</mi></msup></math></p><br/><br/><p>Equating dimensions of fundamental quantities, we have</p><br/><br/><p><math xmlns="http://www.w3.org/1998/Math/MathML"><mi>a</mi><mo>=</mo><mn>1</mn><mo>.</mo><mo>.</mo><mo>.</mo><mo>.</mo><mfenced><mi mathvariant="normal">i</mi></mfenced></math></p><br/><br/><p><math xmlns="http://www.w3.org/1998/Math/MathML"><mo>-</mo><mn>3</mn><mi>a</mi><mo>+</mo><mi>b</mi><mo>+</mo><mn>2</mn><mi>c</mi><mo>=</mo><mn>1</mn><mo>.</mo><mo>.</mo><mo>.</mo><mo>.</mo><mfenced><mi>ii</mi></mfenced></math></p><br/><br/><p><math xmlns="http://www.w3.org/1998/Math/MathML"><mo>-</mo><mi>b</mi><mo>=</mo><mo>-</mo><mn>2</mn><mo>⇒</mo><mi>b</mi><mo>=</mo><mn>2</mn><mo>.</mo><mo>.</mo><mo>.</mo><mo>.</mo><mfenced><mi>iii</mi></mfenced></math></p><br/><br/><p>Putting the values of <math xmlns="http://www.w3.org/1998/Math/MathML"><mi>a</mi></math> and <math xmlns="http://www.w3.org/1998/Math/MathML"><mi>b</mi></math> in Eq (ii), we get</p><br/><br/><p><math xmlns="http://www.w3.org/1998/Math/MathML"><mo>⇒</mo><mo>-</mo><mn>3</mn><mo>×</mo><mn>1</mn><mo>+</mo><mn>2</mn><mo>+</mo><mn>2</mn><mi>c</mi><mo>=</mo><mn>1</mn><mo>⇒</mo><mi>c</mi><mo>=</mo><mn>1</mn></math></p><br/><br/><p><math xmlns="http://www.w3.org/1998/Math/MathML"><mo>∵</mo><mi>a</mi><mo>=</mo><mn>1</mn><mo>,</mo><mi>b</mi><mo>=</mo><mn>2</mn><mo>,</mo><mi>c</mi><mo>=</mo><mn>1</mn></math></p><br/><br/><p>So, drag force on football is</p><br/><br/><p><math xmlns="http://www.w3.org/1998/Math/MathML"><msub><mi>F</mi><mi>d</mi></msub><mo>=</mo><mi>k</mi><mo>·</mo><mi>σ</mi><mo>·</mo><msup><mi>v</mi><mn>2</mn></msup><mo>·</mo><mi>A</mi></math></p><br/><br/><p>When football reaches terminal speed, its weight is balanced by drag force.</p><br/><br/><p><math xmlns="http://www.w3.org/1998/Math/MathML"><mo>⇒</mo></math><math xmlns="http://www.w3.org/1998/Math/MathML"><mi>m</mi><mi>g</mi><mo>=</mo><msub><mi>F</mi><mi>d</mi></msub></math></p><br/><br/><p><math xmlns="http://www.w3.org/1998/Math/MathML"><mo>⇒</mo></math><math xmlns="http://www.w3.org/1998/Math/MathML"><mi>m</mi><mi>g</mi><mo>=</mo><mi>k</mi><mi>σ</mi><msubsup><mi>v</mi><mi>T</mi><mn>2</mn></msubsup><mi>A</mi></math></p><br/><br/><p>where, <math xmlns="http://www.w3.org/1998/Math/MathML"><msub><mi>u</mi><mi>T</mi></msub><mo>=</mo></math>terminal speed of football.</p><br/><br/><p><math xmlns="http://www.w3.org/1998/Math/MathML"><mo>⇒</mo><mi>m</mi><mi>g</mi><mo>=</mo><mi>k</mi><mi>σ</mi><msubsup><mi>v</mi><mi>T</mi><mn>2</mn></msubsup><mi>π</mi><msup><mi>R</mi><mn>2</mn></msup></math></p><br/><br/><p><math xmlns="http://www.w3.org/1998/Math/MathML"><mo>⇒</mo><mi>m</mi><mi>g</mi><mo>=</mo><mi>k</mi><mi>σ</mi><msubsup><mi>u</mi><mi>T</mi><mn>2</mn></msubsup><mi>π</mi><msup><mfenced><mfrac><mi>m</mi><mrow><mfrac><mn>4</mn><mn>3</mn></mfrac><mi>π</mi><mi>ρ</mi></mrow></mfrac></mfenced><mfrac><mn>2</mn><mn>3</mn></mfrac></msup></math></p><br/><br/><p>[ from <math xmlns="http://www.w3.org/1998/Math/MathML"><mi>m</mi><mo>=</mo><mfrac><mn>4</mn><mn>3</mn></mfrac><mi>π</mi><msup><mi>R</mi><mn>3</mn></msup><mi>ρ</mi></math> where <math xmlns="http://www.w3.org/1998/Math/MathML"><mi>ρ</mi><mo>=</mo></math> density of football]</p><br/><br/><p><math xmlns="http://www.w3.org/1998/Math/MathML"><mo>⇒</mo><msub><mi>v</mi><mi>T</mi></msub><mo>∝</mo><msup><mi>m</mi><mrow><mn>1</mn><mo>/</mo><mn>6</mn></mrow></msup></math></p><br/><br/><p><math xmlns="http://www.w3.org/1998/Math/MathML"><mo>⇒</mo><mfrac><msub><mi>v</mi><mn>1</mn></msub><msub><mi>v</mi><mn>2</mn></msub></mfrac><mo>=</mo><msup><mfenced><mfrac><msub><mi>m</mi><mn>1</mn></msub><msub><mi>m</mi><mn>2</mn></msub></mfrac></mfenced><mfrac><mn>1</mn><mn>6</mn></mfrac></msup><mo>=</mo><msup><mfenced><mfrac><mn>250</mn><mn>125</mn></mfrac></mfenced><mfrac><mn>1</mn><mn>6</mn></mfrac></msup><mo>=</mo><msup><mn>2</mn><mrow><mn>1</mn><mo>/</mo><mn>6</mn></mrow></msup></math></p><br/></div>


title: at-2-5-c-and-1-bar-which-of-the-following-has-a-nonzero-h-f-1
slug: at-2-5-c-and-1-bar-which-of-the-following-has-a-nonzero-h-f-1-37849
tags: ['Chemistry', 'Thermodynamics (C)', 'JEE Main']
source_db: MarksBatch1_P1.db
question:
<div class="question">At $25^{\circ} \mathrm{C}$ and 1 bar which of the following has a non-zero $\Delta \mathrm{H}_{\mathrm{f}}^{\circ} ?$</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">$\operatorname{Br}_{2}(\ell)$</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">C (graphite)</span> </li><li class="correct"> <span class="option-label">C</span> <span class="option-data">$\mathrm{O}_{3}(\mathrm{~g})$</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">$\mathrm{I}_{2}(\mathrm{~s})$</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">$\mathrm{O}_{3}(\mathrm{~g})$</span> </div>

answer:
<div class="solution">Ozone is allotropic form of oxygen and is of higher energy (by $68 \mathrm{~K}$ Cal mol $^{-1}$ ) than $\mathrm{O}_{2}$. Hence it can not be taken as the reference in standard state.</div>


tags: ['Chemistry', 'Thermodynamics (C)', 'JEE Main', 'JEE Main 2022 (25 Jun Shift 2)']
source_db: MarksBatch1_P1.db
title:
at-25-c-and-1-atm-pressure-the-enthalpy-of-combustion-of-benzene-1-and-acetylene-g-are-3268-kj-mol-1-and-1300-kj-mol-1-respectively-the-change-in-enth

slug:
at-25-c-and-1-atm-pressure-the-enthalpy-of-combustion-of-benzene-1-and-acetylene-g-are-3268-kj-mol-1-and-1300-kj-mol-1-respectively-the-change-in-enth-59044

question:
<div class="question">At <math xmlns="http://www.w3.org/1998/Math/MathML"><mn>25</mn><mo> </mo><mo>°</mo><mi mathvariant="normal">C</mi></math> and <math xmlns="http://www.w3.org/1998/Math/MathML"><mn>1</mn><mo> </mo><mi>atm</mi></math> pressure, the enthalpy of combustion of benzene <math xmlns="http://www.w3.org/1998/Math/MathML"><mfenced><mn>1</mn></mfenced></math> and acetylene <math xmlns="http://www.w3.org/1998/Math/MathML"><mfenced><mi mathvariant="normal">g</mi></mfenced></math> are <math xmlns="http://www.w3.org/1998/Math/MathML"><mo>-</mo><mn>3268</mn><mo> </mo><mi>kJ</mi><msup><mrow><mo> </mo><mi>mol</mi></mrow><mrow><mo>-</mo><mn>1</mn></mrow></msup></math> and <math xmlns="http://www.w3.org/1998/Math/MathML"><mo>-</mo><mn>1300</mn><mo> </mo><mi>kJ</mi><msup><mrow><mo> </mo><mi>mol</mi></mrow><mrow><mo>-</mo><mn>1</mn></mrow></msup></math>, respectively. The change in enthalpy for the reaction <math xmlns="http://www.w3.org/1998/Math/MathML"><mn>3</mn><msub><mi mathvariant="normal">C</mi><mn>2</mn></msub><msub><mi mathvariant="normal">H</mi><mn>2</mn></msub><mfenced><mi mathvariant="normal">g</mi></mfenced><mo>→</mo><msub><mi mathvariant="normal">C</mi><mn>6</mn></msub><msub><mi mathvariant="normal">H</mi><mn>6</mn></msub><mfenced><mi mathvariant="normal">l</mi></mfenced></math>, 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"><mo>+</mo><mn>324</mn><mo> </mo><mi>kJ</mi><msup><mrow><mo> </mo><mi>mol</mi></mrow><mrow><mo>-</mo><mn>1</mn></mrow></msup></math></span> </li><li class=""> <span class="option-label">B</span> <span class="option-data"><math xmlns="http://www.w3.org/1998/Math/MathML"><mo>+</mo><mn>632</mn><mo> </mo><mi>kJ</mi><msup><mrow><mo> </mo><mi>mol</mi></mrow><mrow><mo>-</mo><mn>1</mn></mrow></msup></math></span> </li><li class="correct"> <span class="option-label">C</span> <span class="option-data"><math xmlns="http://www.w3.org/1998/Math/MathML"><mo>-</mo><mn>632</mn><mo> </mo><mi>kJ</mi><msup><mrow><mo> </mo><mi>mol</mi></mrow><mrow><mo>-</mo><mn>1</mn></mrow></msup></math></span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li><li class=""> <span class="option-label">D</span> <span class="option-data"><math xmlns="http://www.w3.org/1998/Math/MathML"><mo>-</mo><mn>732</mn><mo> </mo><mi>kJ</mi><msup><mrow><mo> </mo><mi>mol</mi></mrow><mrow><mo>-</mo><mn>1</mn></mrow></msup></math></span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value"><math xmlns="http://www.w3.org/1998/Math/MathML"><mo>-</mo><mn>632</mn><mo> </mo><mi>kJ</mi><msup><mrow><mo> </mo><mi>mol</mi></mrow><mrow><mo>-</mo><mn>1</mn></mrow></msup></math></span> </div>

answer:
<div class="solution"><p>Standard enthalpy of combustion is defined as the enthalpy change when one mole of a compound is completely burnt in oxygen with all the reactants and products in their standard state under standard conditions (298K and 1 bar pressure)</p><p><math xmlns="http://www.w3.org/1998/Math/MathML"><msub><mi>ΔH</mi><mi mathvariant="normal">r</mi></msub><mo>=</mo><msub><mfenced><msub><mi>ΔH</mi><mi mathvariant="normal">C</mi></msub></mfenced><mi>reactant</mi></msub><mo>-</mo><msub><mfenced><msub><mi>ΔH</mi><mi mathvariant="normal">C</mi></msub></mfenced><mi>product</mi></msub></math></p><p><math xmlns="http://www.w3.org/1998/Math/MathML"><mo>=</mo><mn>3</mn><mfenced close="]" open="["><mrow><msub><mi>ΔHc</mi><mi mathvariant="normal">c</mi></msub><mfenced><mrow><msub><mi mathvariant="normal">C</mi><mn>2</mn></msub><msub><mi mathvariant="normal">H</mi><mn>2</mn></msub><mo>,</mo><mi mathvariant="normal">g</mi></mrow></mfenced></mrow></mfenced><mo>-</mo><mfenced close="]" open="["><mrow><msub><mi>ΔH</mi><mi mathvariant="normal">c</mi></msub><mfenced><mrow><msub><mi mathvariant="normal">C</mi><mn>6</mn></msub><msub><mi mathvariant="normal">H</mi><mn>6</mn></msub><mo>,</mo><mi mathvariant="normal">l</mi></mrow></mfenced></mrow></mfenced></math></p><p><math xmlns="http://www.w3.org/1998/Math/MathML"><mo>=</mo><mn>3</mn><mo>×</mo><mfenced><mrow><mo>-</mo><mn>1300</mn></mrow></mfenced><mo>-</mo><mfenced><mrow><mo>-</mo><mn>3268</mn></mrow></mfenced></math></p><p><math xmlns="http://www.w3.org/1998/Math/MathML"><mo>=</mo><mo>-</mo><mn>3900</mn><mo>+</mo><mn>3268</mn><mo>=</mo><mo>-</mo><mn>632</mn><mo> </mo><mi>kJ</mi><mo>/</mo><mi>mole</mi></math></p></div>


tags: ['Chemistry', 'Thermodynamics (C)', 'AP EAMCET', 'AP EAMCET 2021 (20 Aug Shift 1)']
source_db: MarksBatch1_P1.db
title:
at-60-c-dinitrogen-tetroxide-is-fifty-percent-dissociated-find-its-standard-free-energy-change-at-this-temperature-and-one-atmosphere-given-log-1-33-0

slug:
at-60-c-dinitrogen-tetroxide-is-fifty-percent-dissociated-find-its-standard-free-energy-change-at-this-temperature-and-one-atmosphere-given-log-1-33-0-41642

question:
<div class="question">At <math xmlns="http://www.w3.org/1998/Math/MathML"><mn>60</mn><mo>°</mo><mi mathvariant="normal">C</mi></math>, dinitrogen tetroxide is fifty percent dissociated. Find its standard free energy change at this temperature and one atmosphere. [ Given: <math xmlns="http://www.w3.org/1998/Math/MathML"><mi>log</mi><mn>1</mn><mo>.</mo><mn>33</mn><mo>=</mo><mn>0</mn><mo>.</mo><mn>1239</mn></math> ]</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data"><math xmlns="http://www.w3.org/1998/Math/MathML"><mo> </mo><mo>-650</mo><mi mathvariant="normal">J</mi><mo>.</mo><mi>mol</mi><msup><mo> </mo><mrow><mo>-</mo><mn>1</mn></mrow></msup></math></span> </li><li class=""> <span class="option-label">B</span> <span class="option-data"><math xmlns="http://www.w3.org/1998/Math/MathML"><mo>-</mo><mn>830</mn><mo> </mo><mi mathvariant="normal">J</mi><mo>.</mo><msup><mi>mol</mi><mrow><mo>-</mo><mn>1</mn></mrow></msup></math></span> </li><li class="correct"> <span class="option-label">C</span> <span class="option-data"><math xmlns="http://www.w3.org/1998/Math/MathML"><mo>-</mo><mn>790</mn><mo> </mo><mi mathvariant="normal">J</mi><mo>.</mo><msup><mi>mol</mi><mrow><mo>-</mo><mn>1</mn></mrow></msup></math></span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li><li class=""> <span class="option-label">D</span> <span class="option-data"><math xmlns="http://www.w3.org/1998/Math/MathML"><mo>-</mo><mn>875</mn><mo> </mo><mi mathvariant="normal">J</mi><mo>·</mo><msup><mi>mol</mi><mrow><mo>-</mo><mn>1</mn></mrow></msup></math></span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value"><math xmlns="http://www.w3.org/1998/Math/MathML"><mo>-</mo><mn>790</mn><mo> </mo><mi mathvariant="normal">J</mi><mo>.</mo><msup><mi>mol</mi><mrow><mo>-</mo><mn>1</mn></mrow></msup></math></span> </div>

answer:
<div class="solution"><p>The reaction showing the dissociation will be:</p><p><math xmlns="http://www.w3.org/1998/Math/MathML"><mtable><mtr><mtd></mtd><mtd><msub><mi mathvariant="normal">N</mi><mn>2</mn></msub><msub><mi mathvariant="normal">O</mi><mn>4</mn></msub><mo>(</mo><mi mathvariant="normal">s</mi><mo>)</mo></mtd><mtd><mo>⇌</mo></mtd><mtd><mn>2</mn><msub><mi>NO</mi><mn>2</mn></msub><mo>(</mo><mi mathvariant="normal">g</mi><mo>)</mo></mtd></mtr><mtr><mtd><mi mathvariant="normal">t</mi><mo>=</mo><mn>0</mn></mtd><mtd><mn>1</mn><mo> </mo><mi>mol</mi></mtd><mtd></mtd><mtd><mn>0</mn><mo> </mo><mi>mol</mi></mtd></mtr><mtr><mtd><mi mathvariant="normal">t</mi><mo>=</mo><msub><mi mathvariant="normal">t</mi><mi>eq</mi></msub></mtd><mtd><mn>0</mn><mo>.</mo><mn>5</mn><mo> </mo><mi>mol</mi></mtd><mtd></mtd><mtd><mn>1</mn><mo> </mo><mi>mol</mi></mtd></mtr></mtable></math></p><p>Clearly, from this equation we can say that the total number of moles is </p><p><math xmlns="http://www.w3.org/1998/Math/MathML"><mn>0</mn><mo>.</mo><mn>5</mn><mo>+</mo><mn>1</mn><mo>=</mo><mn>1</mn><mo>.</mo><mn>5</mn><mo> </mo><mi>mol</mi></math></p><p>Hence, the partial pressure for the molecule will be</p><p><math xmlns="http://www.w3.org/1998/Math/MathML"><msub><mi mathvariant="normal">P</mi><mrow><msub><mi mathvariant="normal">N</mi><mn>2</mn></msub><msub><mi mathvariant="normal">O</mi><mn>4</mn></msub></mrow></msub><mo> </mo><mo>=</mo><mfrac><mrow><mo> </mo><mn>0</mn><mo>.</mo><mn>5</mn></mrow><mrow><mn>1</mn><mo>.</mo><mn>5</mn></mrow></mfrac><mo>×</mo><mn>1</mn><mi>atm</mi><mo> </mo><mo>=</mo><mo> </mo><mfrac><mn>1</mn><mn>3</mn></mfrac><mo> </mo><mi>atm</mi><mspace linebreak="newline"></mspace><msub><mi mathvariant="normal">P</mi><msub><mi>NO</mi><mn>2</mn></msub></msub><mo> </mo><mo>=</mo><mo> </mo><mfrac><mn>1</mn><mrow><mn>1</mn><mo>.</mo><mn>5</mn></mrow></mfrac><mo>×</mo><mn>1</mn><mi>atm</mi><mo> </mo><mo>=</mo><mfrac><mn>2</mn><mn>3</mn></mfrac><mo> </mo><mi>atm</mi></math></p><p>Now, according to the law of chemical equilibrium we know that </p><p><math xmlns="http://www.w3.org/1998/Math/MathML"><msub><mi mathvariant="normal">K</mi><mi>sp</mi></msub><mo> </mo><mo>=</mo><mo> </mo><mfrac><msub><msup><mi mathvariant="normal">P</mi><mn>2</mn></msup><msub><mi>NO</mi><mn>2</mn></msub></msub><msub><mi mathvariant="normal">P</mi><mrow><msub><mi mathvariant="normal">N</mi><mn>2</mn></msub><msub><mi mathvariant="normal">O</mi><mn>4</mn></msub></mrow></msub></mfrac><mo> </mo><mo>=</mo><mo> </mo><mfrac><msup><mfenced><mstyle displaystyle="true"><mfrac><mn>2</mn><mn>3</mn></mfrac></mstyle></mfenced><mn>2</mn></msup><mstyle displaystyle="true"><mfrac><mn>1</mn><mn>3</mn></mfrac></mstyle></mfrac><mo> </mo><mo>=</mo><mo> </mo><mn>1</mn><mo>.</mo><mn>33</mn><mo> </mo><mi>atm</mi></math></p><p>We know that at equilibrium the free Gibb's energy is: </p><p><math xmlns="http://www.w3.org/1998/Math/MathML"><mo>∆</mo><mi mathvariant="normal">G</mi><mo> </mo><mo>=</mo><mo> </mo><mo>-</mo><mn>2</mn><mo>.</mo><mn>303</mn><mo>×</mo><mi>RT</mi><mo>×</mo><mfenced><mrow><msub><mi>log</mi><mn>10</mn></msub><mo> </mo><msub><mi mathvariant="normal">K</mi><mi mathvariant="normal">P</mi></msub></mrow></mfenced><mspace linebreak="newline"></mspace><mo>∆</mo><mi mathvariant="normal">G</mi><mo> </mo><mo>=</mo><mo> </mo><mo>-</mo><mn>2</mn><mo>.</mo><mn>303</mn><mo>×</mo><mfenced><mrow><mn>8</mn><mo>.</mo><mn>314</mn><mo> </mo><msup><mi>JK</mi><mrow><mo>-</mo><mn>1</mn></mrow></msup><msup><mi>mol</mi><mrow><mo>-</mo><mn>1</mn></mrow></msup></mrow></mfenced><mo>×</mo><mfenced><mrow><mn>333</mn><mi mathvariant="normal">K</mi></mrow></mfenced><mo>×</mo><mfenced close="]" open="["><mrow><msub><mi>log</mi><mn>10</mn></msub><mo> </mo><mfenced><mrow><mn>1</mn><mo>.</mo><mn>33</mn></mrow></mfenced></mrow></mfenced><mspace linebreak="newline"></mspace><mo>∆</mo><mi mathvariant="normal">G</mi><mo> </mo><mo>=</mo><mo> </mo><mo>-</mo><mn>790</mn><mo> </mo><msup><mi>Jmol</mi><mrow><mo>-</mo><mn>1</mn></mrow></msup></math></p></div>


tags: ['Chemistry', 'Thermodynamics (C)', 'NEET']
answer: <div class="solution">Correct Option is : (B)<br/>â763.8 kJ mol<sup>â1</sup></div>
source_db: MarksBatch1_P1.db
title:
at-60c-dinitrogen-tetroxide-is-50-per-cent-dissociated-what-is-the-standard-free-energy-change-at-this-temperature-and-at-one-atmosphere

slug:
at-60c-dinitrogen-tetroxide-is-50-per-cent-dissociated-what-is-the-standard-free-energy-change-at-this-temperature-and-at-one-atmosphere-55161

question:
<div class="question">At 60Â°C, dinitrogen tetroxide is 50 per cent dissociated, what is the standard free energy change at this temperature and at one atmosphere?</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">â869.4 kJ mol<sup>-1</sup></span> </li><li class="correct"> <span class="option-label">B</span> <span class="option-data">â763.8 kJ mol<sup>â1</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><li class=""> <span class="option-label">C</span> <span class="option-data">â621.5 kJ mol<sup>-1</sup></span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">â597.2 kJ mol<sup>-1</sup></span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">â763.8 kJ mol<sup>â1</sup></span> </div>


tags: ['Chemistry', 'Thermodynamics (C)', 'TS EAMCET', 'TS EAMCET 2018 (04 May Shift 1)']
source_db: MarksBatch1_P1.db
title:
at-298-k-the-equilibrium-constant-of-the-process-1-5-o-2-g-o-3-g-is-3-10-29-standard-free-energy-change-in-kj-mol-1-of-the-process-is-approximately-r-

slug:
at-298-k-the-equilibrium-constant-of-the-process-1-5-o-2-g-o-3-g-is-3-10-29-standard-free-energy-change-in-kj-mol-1-of-the-process-is-approximately-r-46798

question:
<div class="question">At <math xmlns="http://www.w3.org/1998/Math/MathML"><mn>298</mn><mo> </mo><mi mathvariant="normal">K</mi></math>, the equilibrium constant of the process <math xmlns="http://www.w3.org/1998/Math/MathML"><mn>1</mn><mo>.</mo><mn>5</mn><msub><mi mathvariant="normal">O</mi><mrow><mn>2</mn><mo> </mo><mo>(</mo><mi mathvariant="normal">g</mi><mo>)</mo></mrow></msub><mo>⇌</mo><msub><mi mathvariant="normal">O</mi><mrow><mn>3</mn><mo> </mo><mo>(</mo><mi mathvariant="normal">g</mi><mo>)</mo></mrow></msub></math> is <math xmlns="http://www.w3.org/1998/Math/MathML"><mn>3</mn><mo>×</mo><msup><mn>10</mn><mrow><mo>-</mo><mn>29</mn></mrow></msup></math>. Standard free energy change (in <math xmlns="http://www.w3.org/1998/Math/MathML"><mi>kJ</mi><mo> </mo><msup><mi>mol</mi><mrow><mo>-</mo><mn>1</mn></mrow></msup></math> ) of the process is approximately <math xmlns="http://www.w3.org/1998/Math/MathML"><mfenced><mrow><mi mathvariant="normal">R</mi><mo>=</mo><mn>8</mn><mo>.</mo><mn>314</mn><mo> </mo><mi mathvariant="normal">J</mi><mo> </mo><msup><mi>mol</mi><mrow><mo>-</mo><mn>1</mn></mrow></msup><mo> </mo><msup><mi mathvariant="normal">K</mi><mrow><mo>-</mo><mn>1</mn></mrow></msup><mo>;</mo><mo> </mo><mi>log</mi><mo> </mo><mn>3</mn><mo>=</mo><mn>0</mn><mo>.</mo><mn>47</mn></mrow></mfenced></math></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>724</mn></math></span> </li><li class=""> <span class="option-label">B</span> <span class="option-data"><math xmlns="http://www.w3.org/1998/Math/MathML"><mn>612</mn></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>247</mn></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>163</mn></math></span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li> </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>163</mn></math></span> </div>

answer:
<div class="solution"><p>Free energy change of a reaction is calculated by,</p><p><math xmlns="http://www.w3.org/1998/Math/MathML"><mo>∆</mo><mi mathvariant="normal">G</mi><mo>=</mo><mo>∆</mo><msup><mi mathvariant="normal">G</mi><mo>∘</mo></msup><mo>+</mo><mi>RT</mi><mo> </mo><mi>lnQ</mi></math></p><p>At equilibrium, the free energy change of a reaction is zero <math xmlns="http://www.w3.org/1998/Math/MathML"><mo>(</mo><mo>∆</mo><mi mathvariant="normal">G</mi><mo>=</mo><mn>0</mn><mo>)</mo></math>, and the reaction quotient <math xmlns="http://www.w3.org/1998/Math/MathML"><mo>(</mo><mi mathvariant="normal">Q</mi><mo>)</mo></math> is equal to the equilibrium constant <math xmlns="http://www.w3.org/1998/Math/MathML"><mo>(</mo><mi mathvariant="normal">K</mi><mo>)</mo></math>. So, the above relation takes the form,</p><p><math xmlns="http://www.w3.org/1998/Math/MathML"><mo>∆</mo><msup><mi mathvariant="normal">G</mi><mo>∘</mo></msup><mo>=</mo><mo>-</mo><mi>RT</mi><mo> </mo><mi>lnK</mi></math></p><p><math xmlns="http://www.w3.org/1998/Math/MathML"><mo>∆</mo><msup><mi mathvariant="normal">G</mi><mo>∘</mo></msup><mo>=</mo><mo>-</mo><mn>2</mn><mo>.</mo><mn>303</mn><mi>RT</mi><mo> </mo><msub><mi>log</mi><mn>10</mn></msub><mi mathvariant="normal">K</mi></math></p><p>where <math xmlns="http://www.w3.org/1998/Math/MathML"><mo>∆</mo><msup><mi mathvariant="normal">G</mi><mo>∘</mo></msup><mo>=</mo></math>standard free energy change</p><p>Therefore,</p><p><math xmlns="http://www.w3.org/1998/Math/MathML"><mo>∆</mo><msup><mi mathvariant="normal">G</mi><mo>∘</mo></msup><mo>=</mo><mo>-</mo><mn>2</mn><mo>.</mo><mn>303</mn><mo>×</mo><mn>8</mn><mo>.</mo><mn>314</mn><mo>×</mo><mn>298</mn><mo>×</mo><mi>log</mi><mfenced><mrow><mn>3</mn><mo>×</mo><msup><mn>10</mn><mrow><mo>-</mo><mn>29</mn></mrow></msup></mrow></mfenced><mo> </mo><mi mathvariant="normal">J</mi><mo> </mo><msup><mi>mol</mi><mrow><mo>-</mo><mn>1</mn></mrow></msup></math></p><p><math xmlns="http://www.w3.org/1998/Math/MathML"><mo>∆</mo><msup><mi mathvariant="normal">G</mi><mo>∘</mo></msup><mo>=</mo><mo>-</mo><mn>5705</mn><mo>.</mo><mn>8</mn><mo>×</mo><mfenced close="]" open="["><mrow><mi>log</mi><mfenced><mn>3</mn></mfenced><mo>+</mo><mi>log</mi><mfenced><msup><mn>10</mn><mrow><mo>-</mo><mn>29</mn></mrow></msup></mfenced></mrow></mfenced><mo> </mo><mi mathvariant="normal">J</mi><mo> </mo><msup><mi>mol</mi><mrow><mo>-</mo><mn>1</mn></mrow></msup></math></p><p><math xmlns="http://www.w3.org/1998/Math/MathML"><mo>∆</mo><msup><mi mathvariant="normal">G</mi><mo>∘</mo></msup><mo>=</mo><mo>-</mo><mn>5705</mn><mo>.</mo><mn>8</mn><mo>×</mo><mfenced close="]" open="["><mrow><mn>0</mn><mo>.</mo><mn>47</mn><mo>-</mo><mn>29</mn></mrow></mfenced><mo> </mo><mi mathvariant="normal">J</mi><mo> </mo><msup><mi>mol</mi><mrow><mo>-</mo><mn>1</mn></mrow></msup></math></p><p><math xmlns="http://www.w3.org/1998/Math/MathML"><mo>∆</mo><msup><mi mathvariant="normal">G</mi><mo>∘</mo></msup><mo>=</mo><mn>162787</mn><mi mathvariant="normal">J</mi><mo> </mo><msup><mi>mol</mi><mrow><mo>-</mo><mn>1</mn></mrow></msup></math></p><p><math xmlns="http://www.w3.org/1998/Math/MathML"><mo>∆</mo><msup><mi mathvariant="normal">G</mi><mo>∘</mo></msup><mo>≈</mo><mn>163</mn><mo> </mo><mi>kJ</mi><mo> </mo><msup><mi>mol</mi><mrow><mo>-</mo><mn>1</mn></mrow></msup></math></p></div>


tags: ['Chemistry', 'Electrochemistry', 'NEET', 'NEET 2022 (Phase 1)']
source_db: MarksBatch1_P1.db
title:
at-298-k-the-standard-electrode-potentials-of-cu-2-cu-zn-2-zn-fe-2-fe-and-ag-ag-are-0-34-v-0-76-v-0-44-v-and-0-80-v-respectively-on-the-basis-of-stand

slug:
at-298-k-the-standard-electrode-potentials-of-cu-2-cu-zn-2-zn-fe-2-fe-and-ag-ag-are-0-34-v-0-76-v-0-44-v-and-0-80-v-respectively-on-the-basis-of-stand-91694

question:
<div class="question"><p>At <math xmlns="http://www.w3.org/1998/Math/MathML"><mn>298</mn><mo> </mo><mi mathvariant="normal">K</mi></math>, the standard electrode potentials of <math xmlns="http://www.w3.org/1998/Math/MathML"><msup><mi>Cu</mi><mrow><mn>2</mn><mo>+</mo></mrow></msup><mo>/</mo><mi>Cu</mi><mo>,</mo><mo> </mo><msup><mi>Zn</mi><mrow><mn>2</mn><mo>+</mo></mrow></msup><mo>/</mo><mi>Zn</mi><mo>,</mo><mo> </mo><msup><mi>Fe</mi><mrow><mn>2</mn><mo>+</mo></mrow></msup><mo>/</mo><mi>Fe</mi></math> and <math xmlns="http://www.w3.org/1998/Math/MathML"><msup><mi>Ag</mi><mo>+</mo></msup><mo>/</mo><mi>Ag</mi></math> are <math xmlns="http://www.w3.org/1998/Math/MathML"><mn>0</mn><mo>.</mo><mn>34</mn><mo> </mo><mi mathvariant="normal">V</mi></math>, <math xmlns="http://www.w3.org/1998/Math/MathML"><mo>-</mo><mn>0</mn><mo>.</mo><mn>76</mn><mo> </mo><mi mathvariant="normal">V</mi></math>, <math xmlns="http://www.w3.org/1998/Math/MathML"><mo>-</mo><mn>0</mn><mo>.</mo><mn>44</mn><mo> </mo><mi mathvariant="normal">V</mi></math> and <math xmlns="http://www.w3.org/1998/Math/MathML"><mn>0</mn><mo>.</mo><mn>80</mn><mo> </mo><mi mathvariant="normal">V</mi></math>, respectively.</p><p>On the basis of standard electrode potential, predict which of the following reaction cannot occur?</p></div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data"><math xmlns="http://www.w3.org/1998/Math/MathML"><msub><mi>CuSO</mi><mn>4</mn></msub><mo>(</mo><mi>aq</mi><mo>)</mo><mo>+</mo><mi>Fe</mi><mo>(</mo><mi mathvariant="normal">s</mi><mo>)</mo><mo>→</mo><msub><mi>FeSO</mi><mn>4</mn></msub><mo>(</mo><mi>aq</mi><mo>)</mo><mo>+</mo><mi>Cu</mi><mo>(</mo><mi mathvariant="normal">s</mi><mo>)</mo></math></span> </li><li class=""> <span class="option-label">B</span> <span class="option-data"><math xmlns="http://www.w3.org/1998/Math/MathML"><msub><mi>FeSO</mi><mn>4</mn></msub><mo>(</mo><mi>aq</mi><mo>)</mo><mo>+</mo><mi>Zn</mi><mo>(</mo><mi mathvariant="normal">s</mi><mo>)</mo><mo>→</mo><msub><mi>ZnSO</mi><mn>4</mn></msub><mo>(</mo><mi>aq</mi><mo>)</mo><mo>+</mo><mi>Fe</mi><mo>(</mo><mi mathvariant="normal">s</mi><mo>)</mo></math></span> </li><li class="correct"> <span class="option-label">C</span> <span class="option-data"><math xmlns="http://www.w3.org/1998/Math/MathML"><mn>2</mn><msub><mi>CuSO</mi><mn>4</mn></msub><mo>(</mo><mi>aq</mi><mo>)</mo><mo>+</mo><mn>2</mn><mi>Ag</mi><mo>(</mo><mi mathvariant="normal">s</mi><mo>)</mo><mo>→</mo><mn>2</mn><mi>Cu</mi><mo>(</mo><mi mathvariant="normal">s</mi><mo>)</mo><mo>+</mo><msub><mi>Ag</mi><mn>2</mn></msub><msub><mi>SO</mi><mn>4</mn></msub><mo>(</mo><mi>aq</mi><mo>)</mo></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"><msub><mi>CuSO</mi><mn>4</mn></msub><mo>(</mo><mi>aq</mi><mo>)</mo><mo>+</mo><mi>Zn</mi><mo>(</mo><mi mathvariant="normal">s</mi><mo>)</mo><mo>→</mo><msub><mi>ZnSO</mi><mn>4</mn></msub><mo>(</mo><mi>aq</mi><mo>)</mo><mo>+</mo><mi>Cu</mi><mo>(</mo><mi mathvariant="normal">s</mi><mo>)</mo></math></span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value"><math xmlns="http://www.w3.org/1998/Math/MathML"><mn>2</mn><msub><mi>CuSO</mi><mn>4</mn></msub><mo>(</mo><mi>aq</mi><mo>)</mo><mo>+</mo><mn>2</mn><mi>Ag</mi><mo>(</mo><mi mathvariant="normal">s</mi><mo>)</mo><mo>→</mo><mn>2</mn><mi>Cu</mi><mo>(</mo><mi mathvariant="normal">s</mi><mo>)</mo><mo>+</mo><msub><mi>Ag</mi><mn>2</mn></msub><msub><mi>SO</mi><mn>4</mn></msub><mo>(</mo><mi>aq</mi><mo>)</mo></math></span> </div>

answer:
<div class="solution"><p>The given standard reduction potentials of <math xmlns="http://www.w3.org/1998/Math/MathML"><mi>Zn</mi><mo>,</mo><mo> </mo><mi>Cu</mi><mo>,</mo><mo> </mo><mi>Ag</mi></math> and <math xmlns="http://www.w3.org/1998/Math/MathML"><mi>Fe</mi></math> are;</p><p><math xmlns="http://www.w3.org/1998/Math/MathML"><mi mathvariant="normal">E</mi><msub><mo>°</mo><mfrac bevelled="true"><msup><mi>Zn</mi><mrow><mn>2</mn><mo>+</mo></mrow></msup><mi>Zn</mi></mfrac></msub><mo>=</mo><mo>-</mo><mn>0</mn><mo>.</mo><mn>76</mn><mo> </mo><mi mathvariant="normal">V</mi><mo>,</mo><mo> </mo><mi mathvariant="normal">E</mi><msub><mo>°</mo><mfrac bevelled="true"><msup><mi>Cu</mi><mrow><mn>2</mn><mo>+</mo></mrow></msup><mi>cu</mi></mfrac></msub><mo>=</mo><mn>0</mn><mo>.</mo><mn>34</mn><mo> </mo><mi mathvariant="normal">V</mi><mspace linebreak="newline"></mspace><mi mathvariant="normal">E</mi><msub><mo>°</mo><mfrac bevelled="true"><msup><mi>Ag</mi><mo>+</mo></msup><mi>Ag</mi></mfrac></msub><mo>=</mo><mn>0</mn><mo>.</mo><mn>80</mn><mo> </mo><mi mathvariant="normal">V</mi><mo>,</mo><mo> </mo><mi>and</mi><mo> </mo><mi mathvariant="normal">E</mi><msub><mo>°</mo><mfrac bevelled="true"><msup><mi>Fe</mi><mrow><mn>2</mn><mo>+</mo></mrow></msup><mi>Fe</mi></mfrac></msub><mo>=</mo><mo>-</mo><mn>0</mn><mo>.</mo><mn>44</mn><mo> </mo><mi mathvariant="normal">V</mi><mo> </mo></math></p><p>The condition for reaction to occur, <math xmlns="http://www.w3.org/1998/Math/MathML"><mi mathvariant="normal">E</mi><msub><mo>°</mo><mi>Cell</mi></msub><mo>=</mo><msub><mfenced><mrow><mi mathvariant="normal">E</mi><msub><mo>°</mo><mi>SRP</mi></msub></mrow></mfenced><mrow><mi>reduction</mi><mo> </mo><mi>reaction</mi></mrow></msub><mo>-</mo><msub><mfenced><mrow><mi mathvariant="normal">E</mi><msub><mo>°</mo><mi>SRP</mi></msub></mrow></mfenced><mrow><mi>oxidation</mi><mo> </mo><mi>reaction</mi></mrow></msub></math> must have the positive value.</p><p><math xmlns="http://www.w3.org/1998/Math/MathML"><mfenced><mi mathvariant="normal">A</mi></mfenced><mo> </mo><msup><mi>Cu</mi><mrow><mn>2</mn><mo>+</mo></mrow></msup><mfenced><mi>aq</mi></mfenced><mo>+</mo><mi>Fe</mi><mo>→</mo><mi>Cu</mi><mo> </mo><mo>+</mo><msup><mi>Fe</mi><mrow><mn>2</mn><mo>+</mo></mrow></msup><mfenced><mi>aq</mi></mfenced></math></p><p><math xmlns="http://www.w3.org/1998/Math/MathML"><mi mathvariant="normal">E</mi><msub><mo>°</mo><mi>Cell</mi></msub><mo>=</mo><mn>0</mn><mo>.</mo><mn>34</mn><mo>+</mo><mn>0</mn><mo>.</mo><mn>44</mn><mspace linebreak="newline"></mspace><mi mathvariant="normal">E</mi><msub><mo>°</mo><mi>Cell</mi></msub><mo>=</mo><mn>0</mn><mo>.</mo><mn>78</mn><mo> </mo><mi mathvariant="normal">V</mi></math></p><p><math xmlns="http://www.w3.org/1998/Math/MathML"><mfenced><mi mathvariant="normal">B</mi></mfenced><mo> </mo><mi>Zn</mi><mo> </mo><mo>+</mo><msup><mi>Fe</mi><mrow><mn>2</mn><mo>+</mo></mrow></msup><mfenced><mi>aq</mi></mfenced><mo>→</mo><msup><mi>Zn</mi><mrow><mn>2</mn><mo>+</mo></mrow></msup><mfenced><mi>aq</mi></mfenced><mo>+</mo><mi>Fe</mi></math></p><p><math xmlns="http://www.w3.org/1998/Math/MathML"><mi mathvariant="normal">E</mi><msub><mo>°</mo><mi>Cell</mi></msub><mo>=</mo><mo>-</mo><mn>0</mn><mo>.</mo><mn>44</mn><mo>+</mo><mn>0</mn><mo>.</mo><mn>76</mn><mspace linebreak="newline"></mspace><mi mathvariant="normal">E</mi><msub><mo>°</mo><mi>Cell</mi></msub><mo>=</mo><mo>+</mo><mn>0</mn><mo>.</mo><mn>32</mn><mo> </mo><mi mathvariant="normal">V</mi></math></p><p><math xmlns="http://www.w3.org/1998/Math/MathML"><mfenced><mi mathvariant="normal">C</mi></mfenced><mo> </mo><msup><mi>Cu</mi><mrow><mn>2</mn><mo>+</mo></mrow></msup><mfenced><mi>aq</mi></mfenced><mo>+</mo><mn>2</mn><mi>Ag</mi><mo>→</mo><mn>2</mn><msup><mi>Ag</mi><mo>+</mo></msup><mfenced><mi>aq</mi></mfenced><mo>+</mo><mi>Cu</mi></math></p><p><math xmlns="http://www.w3.org/1998/Math/MathML"><mi mathvariant="normal">E</mi><msub><mo>°</mo><mi>Cell</mi></msub><mo>=</mo><mn>0</mn><mo>.</mo><mn>34</mn><mo>-</mo><mn>0</mn><mo>.</mo><mn>80</mn><mspace linebreak="newline"></mspace><mi mathvariant="normal">E</mi><msub><mo>°</mo><mi>Cell</mi></msub><mo>=</mo><mo>-</mo><mn>0</mn><mo>.</mo><mn>46</mn><mo> </mo><mi mathvariant="normal">V</mi></math></p><p><math xmlns="http://www.w3.org/1998/Math/MathML"><mfenced><mi mathvariant="normal">D</mi></mfenced><mo> </mo><mi>Zn</mi><mo>+</mo><msup><mi>Cu</mi><mrow><mn>2</mn><mo>+</mo></mrow></msup><mfenced><mi>aq</mi></mfenced><mo>→</mo><msup><mi>Zn</mi><mrow><mn>2</mn><mo>+</mo></mrow></msup><mfenced><mi>aq</mi></mfenced><mo>+</mo><mi>Cu</mi></math></p><p><math xmlns="http://www.w3.org/1998/Math/MathML"></math><math xmlns="http://www.w3.org/1998/Math/MathML"><mi mathvariant="normal">E</mi><msub><mo>°</mo><mi>Cell</mi></msub><mo>=</mo><mn>0</mn><mo>.</mo><mn>34</mn><mo>+</mo><mn>0</mn><mo>.</mo><mn>76</mn><mspace linebreak="newline"></mspace><mi mathvariant="normal">E</mi><msub><mo>°</mo><mi>Cell</mi></msub><mo>=</mo><mo>+</mo><mn>1</mn><mo>.</mo><mn>10</mn><mo> </mo><mi mathvariant="normal">V</mi></math></p><p>Hence, the reaction given in <math xmlns="http://www.w3.org/1998/Math/MathML"><mi mathvariant="normal">C</mi></math> option is not possible.</p></div>


tags: ['Chemistry', 'Electrochemistry', 'JEE Main', 'JEE Main 2015 (11 Apr Online)']
source_db: MarksBatch1_P1.db
title:
at-298-k-the-standard-reduction-potentials-are-1-51-v-for-m-n-o-4-m-n-2-1-36-v-for-c-l-2-c-l-1-07-v-for-b-r-2-b-r-0-54-v-for-i-2-i-at-ph-3-permanganat

slug:
at-298-k-the-standard-reduction-potentials-are-1-51-v-for-m-n-o-4-m-n-2-1-36-v-for-c-l-2-c-l-1-07-v-for-b-r-2-b-r-0-54-v-for-i-2-i-at-ph-3-permanganat-27987

question:
<div class="question">At <math xmlns="http://www.w3.org/1998/Math/MathML"><mn>298</mn><mo> </mo><mi mathvariant="normal">K</mi></math>, the standard reduction potentials are <math xmlns="http://www.w3.org/1998/Math/MathML"><mn>1</mn><mo>.</mo><mn>51</mn><mo> </mo><mi mathvariant="normal">V</mi></math> for <math><msubsup><mrow><mi mathvariant="normal">M</mi><mi mathvariant="normal">n</mi><mi mathvariant="normal">O</mi></mrow><mrow><mn>4</mn></mrow><mrow><mo>-</mo></mrow></msubsup><mi mathvariant="normal"> </mi><mo>|</mo><mi mathvariant="normal"> </mi><mi mathvariant="normal">M</mi><msup><mrow><mi mathvariant="normal">n</mi></mrow><mrow><mn>2</mn><mo>+</mo></mrow></msup></math>, <math xmlns="http://www.w3.org/1998/Math/MathML"><mn>1</mn><mo>.</mo><mn>36</mn><mo> </mo><mi mathvariant="normal">V</mi></math> for <math><mi mathvariant="normal">C</mi><msub><mrow><mi mathvariant="normal">l</mi></mrow><mrow><mn>2</mn></mrow></msub><mo>|</mo><mi mathvariant="normal">C</mi><msup><mrow><mi mathvariant="normal">l</mi></mrow><mrow><mo>-</mo></mrow></msup></math>, <math xmlns="http://www.w3.org/1998/Math/MathML"><mn>1</mn><mo>.</mo><mn>07</mn><mo> </mo><mi mathvariant="normal">V</mi></math> for <math><mi mathvariant="normal">B</mi><msub><mrow><mi mathvariant="normal">r</mi></mrow><mrow><mn>2</mn></mrow></msub><mo>|</mo><mi mathvariant="normal">B</mi><msup><mrow><mi mathvariant="normal">r</mi></mrow><mrow><mo>-</mo></mrow></msup></math>, <math xmlns="http://www.w3.org/1998/Math/MathML"><mn>0</mn><mo>.</mo><mn>54</mn><mo> </mo><mi mathvariant="normal">V</mi></math> for <math><msub><mrow><mi mathvariant="normal">I</mi></mrow><mrow><mn>2</mn></mrow></msub><mo>|</mo><msup><mrow><mi mathvariant="normal">I</mi></mrow><mrow><mo>-</mo></mrow></msup></math>. At <math xmlns="http://www.w3.org/1998/Math/MathML"><mi>pH</mi><mo>=</mo><mn>3</mn></math>, permanganate is expected to oxidize: <math><mfenced separators="|"><mrow><mfrac><mrow><mi mathvariant="normal">R</mi><mi mathvariant="normal">T</mi></mrow><mrow><mi mathvariant="normal">F</mi></mrow></mfrac><mo>=</mo><mn>0.059</mn></mrow></mfenced></math></div>

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

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value"><math><mi mathvariant="normal">B</mi><msup><mrow><mi mathvariant="normal">r</mi></mrow><mrow><mo>-</mo></mrow></msup></math> and <math><msup><mrow><mi mathvariant="normal">I</mi></mrow><mrow><mo>-</mo></mrow></msup></math></span> </div>

answer:
<div class="solution"><blockquote><p><math><msubsup><mrow><mi mathvariant="normal">M</mi><mi mathvariant="normal">n</mi><mi mathvariant="normal">O</mi></mrow><mrow><mn>4</mn></mrow><mrow><mo>-</mo></mrow></msubsup><mo>+</mo><mn>8</mn><msup><mrow><mi mathvariant="normal">H</mi></mrow><mrow><mo>+</mo></mrow></msup><mo>+</mo><mn>5</mn><msup><mrow><mi mathvariant="normal">e</mi></mrow><mrow><mo>-</mo></mrow></msup><mo>→</mo><mi mathvariant="normal">M</mi><msup><mrow><mi mathvariant="normal">n</mi></mrow><mrow><mn>2</mn><mo>+</mo></mrow></msup><mo>+</mo><mn>4</mn><msub><mrow><mi mathvariant="normal">H</mi></mrow><mrow><mn>2</mn></mrow></msub><mi mathvariant="normal">O</mi><mi mathvariant="normal"> </mi></math><br/><math><msub><mrow><mi mathvariant="normal">E</mi></mrow><mrow><mfrac><mrow><msubsup><mrow><mi mathvariant="normal">M</mi><mi mathvariant="normal">n</mi><mi mathvariant="normal">O</mi></mrow><mrow><mn>4</mn></mrow><mrow><mo>-</mo></mrow></msubsup></mrow><mrow><mi mathvariant="normal">M</mi><msup><mrow><mi mathvariant="normal">n</mi></mrow><mrow><mn>2</mn><mo>+</mo></mrow></msup></mrow></mfrac></mrow></msub><mo>=</mo><msup><mrow><mi mathvariant="normal">E</mi></mrow><mrow><mi mathvariant="normal">o</mi></mrow></msup><mo>-</mo><mfrac><mrow><mn>0.059</mn></mrow><mrow><mn>5</mn></mrow></mfrac><mrow><mrow><mi mathvariant="normal">log</mi></mrow><mo>⁡</mo><mrow><mfrac><mrow><mfenced close="]" open="[" separators="|"><mrow><mi mathvariant="normal">M</mi><msup><mrow><mi mathvariant="normal">n</mi></mrow><mrow><mn>2</mn><mo>+</mo></mrow></msup></mrow></mfenced></mrow><mrow><mfenced close="]" open="[" separators="|"><mrow><msubsup><mrow><mi mathvariant="normal">M</mi><mi mathvariant="normal">n</mi><mi mathvariant="normal">O</mi></mrow><mrow><mn>4</mn></mrow><mrow><mo>-</mo></mrow></msubsup></mrow></mfenced><msup><mrow><mfenced close="]" open="[" separators="|"><mrow><msup><mrow><mi mathvariant="normal">H</mi></mrow><mrow><mo>+</mo></mrow></msup></mrow></mfenced></mrow><mrow><mn>8</mn></mrow></msup></mrow></mfrac></mrow></mrow></math><br/><math><mo>=</mo><mn>1.51</mn><mo>-</mo><mfrac><mrow><mn>0.059</mn></mrow><mrow><mn>5</mn></mrow></mfrac><mrow><mrow><mi mathvariant="normal">log</mi></mrow><mo>⁡</mo><mrow><mfrac><mrow><mn>1</mn></mrow><mrow><msup><mrow><mfenced close="]" open="[" separators="|"><mrow><msup><mrow><mn>10</mn></mrow><mrow><mo>-</mo><mn>3</mn></mrow></msup></mrow></mfenced></mrow><mrow><mn>8</mn></mrow></msup></mrow></mfrac></mrow></mrow></math><br/>(Assuming <math><mfenced close="]" open="[" separators="|"><mrow><msubsup><mrow><mi mathvariant="normal">M</mi><mi mathvariant="normal">n</mi><mi mathvariant="normal">O</mi></mrow><mrow><mn>4</mn></mrow><mrow><mo>-</mo></mrow></msubsup></mrow></mfenced><mo>=</mo><mfenced close="]" open="[" separators="|"><mrow><mi mathvariant="normal">M</mi><msup><mrow><mi mathvariant="normal">n</mi></mrow><mrow><mn>2</mn><mo>+</mo></mrow></msup></mrow></mfenced><mo>=</mo><mn>1</mn><mi mathvariant="normal">M</mi></math> )<br/><math><mo>=</mo><mn>1.51</mn><mo>-</mo><mfrac><mrow><mn>0.059</mn></mrow><mrow><mn>5</mn></mrow></mfrac><mo>×</mo><mn>24</mn><mo>=</mo><mn>1.51</mn><mo>-</mo><mn>0.28</mn></math><br/><math xmlns="http://www.w3.org/1998/Math/MathML"><mo>=</mo><mn>1.23</mn><mi mathvariant="normal"> </mi><mi mathvariant="normal">V</mi></math><br/><math xmlns="http://www.w3.org/1998/Math/MathML"><msubsup><mi mathvariant="normal">E</mi><mrow><mfenced separators="|"><mrow><mi mathvariant="normal">r</mi><mi mathvariant="normal">e</mi><mi mathvariant="normal">d</mi></mrow></mfenced><mfenced separators="|"><mfrac><msubsup><mrow><mi mathvariant="normal">M</mi><mi mathvariant="normal">n</mi><mi mathvariant="normal">O</mi></mrow><mn>4</mn><mo>-</mo></msubsup><mrow><mi mathvariant="normal">M</mi><msup><mi mathvariant="normal">n</mi><mrow><mn>2</mn><mo>+</mo></mrow></msup></mrow></mfrac></mfenced></mrow><mi mathvariant="normal">o</mi></msubsup><mo>=</mo><mn>1.23</mn><mi mathvariant="normal"> </mi><mi mathvariant="normal">V</mi><mo>&gt;</mo><msubsup><mi mathvariant="normal">E</mi><mrow><mi mathvariant="normal">r</mi><mi mathvariant="normal">e</mi><mi mathvariant="normal">d</mi><mfrac><mrow><mi mathvariant="normal">B</mi><msub><mi mathvariant="normal">r</mi><mn>2</mn></msub></mrow><mrow><mi mathvariant="normal">B</mi><msup><mi mathvariant="normal">r</mi><mo>-</mo></msup></mrow></mfrac></mrow><mi mathvariant="normal">o</mi></msubsup><mo>&gt;</mo><msubsup><mi mathvariant="normal">E</mi><mrow><mi mathvariant="normal">r</mi><mi mathvariant="normal">e</mi><mi mathvariant="normal">d</mi><mfrac><msub><mi mathvariant="normal">I</mi><mn>2</mn></msub><msup><mi mathvariant="normal">I</mi><mo>-</mo></msup></mfrac></mrow><mi mathvariant="normal">o</mi></msubsup><mi mathvariant="normal"> </mi></math><br/>i.e. it will oxidise <math><mi mathvariant="normal">B</mi><msup><mrow><mi mathvariant="normal">r</mi></mrow><mrow><mo>-</mo></mrow></msup></math> and <math><msup><mrow><mi mathvariant="normal">I</mi></mrow><mrow><mo>-</mo></mrow></msup></math>, only.</p></blockquote></div>


tags: ['Chemistry', 'Thermodynamics (C)', 'AP EAMCET', 'AP EAMCET 2019 (20 Apr Shift 2)']
correct_option: <div class="correct-answer"> The correct answer is: <span class="option-value">-57.4</span> </div>
source_db: MarksBatch1_P1.db
title:
at-300-k-the-equilibrium-constant-for-a-reaction-is-10-the-standard-free-energy-change-in-kj-mol-1-for-the-reaction-is

slug:
at-300-k-the-equilibrium-constant-for-a-reaction-is-10-the-standard-free-energy-change-in-kj-mol-1-for-the-reaction-is-47523

question:
<div class="question">At $300 \mathrm{~K}$, the equilibrium constant for a reaction is 10 . The standard free energy change (in $\mathrm{kJ} \mathrm{mol}^{-1}$ ) for the reaction is</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">-57.4</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">-115.2</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">+57.4</span> </li><li class="correct"> <span class="option-label">D</span> <span class="option-data">-57.4</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li> </ul>

answer:
<div class="solution">From Gibbs free energy equation,<br/>$$<br/>\Delta G=-2.303 R T \log K<br/>$$<br/><br/>Given, $K=10, T=300 \mathrm{~K}$<br/>$$<br/>\begin{aligned}<br/>&amp; R=8.314 \mathrm{~J} / \mathrm{K} / \mathrm{mol} \\<br/>&amp; \therefore \Delta G=-2.303 \times 8.314 \mathrm{~J} / \mathrm{mol} / \mathrm{K} \times 300 \mathrm{~K} \times \log 10 \\<br/>&amp; \Delta G=-2.303 \times 8.314 \mathrm{~J} / \mathrm{mol} / \mathrm{K} \times 300 \mathrm{~K} \\<br/>&amp; {[\because \log 10=1]} \\<br/>&amp; \Delta G=-5744.14 \mathrm{~J} / \mathrm{mol}, \Delta G=-5.74 \mathrm{~kJ} / \mathrm{mol}<br/>\end{aligned}<br/>$$<br/><br/>Thus, option (d) is correct.</div>


tags: ['Chemistry', 'Thermodynamics (C)', 'JEE Main', 'JEE Main 2018 (16 Apr Online)']
correct_option: <div class="correct-answer"> The correct answer is: <span class="option-value">4763</span> </div>
source_db: MarksBatch1_P1.db
title:
at-320-k-a-gas-a-2-is-20-dissociated-to-a-g-the-standard-gibbs-free-energy-change-at-320-k-a-n-d-1-a-t-m-i-n-j-m-o-l-1-is-approximately-r-8-314-jk-1-m

slug:
at-320-k-a-gas-a-2-is-20-dissociated-to-a-g-the-standard-gibbs-free-energy-change-at-320-k-a-n-d-1-a-t-m-i-n-j-m-o-l-1-is-approximately-r-8-314-jk-1-m-53123

question:
<div class="question">At 320 K, a gas <math><msub><mrow><mi>A</mi></mrow><mrow><mn>2</mn></mrow></msub></math> is 20 % dissociated to <math><mi>A</mi><mo>(</mo><mi>g</mi><mo>)</mo></math> . The standard Gibbs free energy change at <math><mn>320</mn><mi> </mi><mi>K</mi><mi> </mi><mi mathvariant="normal">a</mi><mi mathvariant="normal">n</mi><mi mathvariant="normal">d</mi><mi> </mi><mn>1</mn><mi> </mi><mi mathvariant="normal">a</mi><mi mathvariant="normal">t</mi><mi mathvariant="normal">m</mi><mi> </mi><mi mathvariant="normal">i</mi><mi mathvariant="normal">n</mi><mi> </mi><mi>J</mi><mi> </mi><mi>m</mi><mi>o</mi><msup><mrow><mi>l</mi></mrow><mrow><mo>–</mo><mn>1</mn></mrow></msup></math> is approximately: <math xmlns="http://www.w3.org/1998/Math/MathML"><mo>(</mo><mi mathvariant="normal">R</mi><mi mathvariant="normal"> </mi><mo>=</mo><mi mathvariant="normal"> </mi><mn>8</mn><mo>.314</mo><mi mathvariant="normal"> </mi><msup><mi>JK</mi><mrow><mo>–</mo><mn>1</mn></mrow></msup><mi mathvariant="normal"> </mi><msup><mi>mol</mi><mrow><mo>–</mo><mn>1</mn></mrow></msup><mi mathvariant="normal"> </mi><mo>;</mo><mi>ln</mi><mn>2</mn><mi mathvariant="normal"> </mi><mo>=</mo><mi mathvariant="normal"> </mi><mn>0</mn><mo>.693</mo><mi mathvariant="normal"> </mi><mo>;</mo><mi>ln</mi><mn>3</mn><mi mathvariant="normal"> </mi><mo>=</mo><mi mathvariant="normal"> </mi><mn>1</mn><mo>.098</mo><mo>)</mo></math></div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">1844</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">2068</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">4281</span> </li><li class="correct"> <span class="option-label">D</span> <span class="option-data">4763</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">Let assume initial moles is 1<br/><math><msub><mrow><mi>               A</mi></mrow><mrow><mn>2</mn></mrow></msub><mover accent="false"><mo>→</mo><mrow><mi> </mi><mi> </mi><mi> </mi><mi> </mi><mi> </mi><mi> </mi><mi> </mi><mi> </mi><mi> </mi><mi> </mi><mi> </mi><mi> </mi><mi> </mi><mi> </mi><mi> </mi><mi> </mi><mi> </mi><mi> </mi><mi> </mi><mi> </mi><mi> </mi><mi> </mi><mi> </mi><mi> </mi><mi> </mi><mi> </mi><mi> </mi><mi> </mi><mi> </mi><mi> </mi><mi> </mi><mi> </mi><mi> </mi></mrow></mover><mi> </mi><mn>2</mn><mi>A</mi></math><br/>t=0       1<br/>t=t         <math><mn>1</mn><mo>-0</mo><mo>.</mo><mn>2</mn><mi> </mi><mi> </mi><mi> </mi><mi> </mi><mi> </mi><mi> </mi><mi> </mi><mi> </mi><mi> </mi><mi> </mi><mi> </mi><mi> </mi><mi> </mi><mi> </mi><mi> </mi><mi> </mi><mi> </mi><mi> </mi><mi> 0</mi><mo>.</mo><mn>2</mn><mo>×</mo><mn>2</mn></math><br/><br/><math><mi>P</mi><mi>a</mi><mi>r</mi><mi>t</mi><mi>i</mi><mi>a</mi><mi>l</mi><mi> </mi><mi>p</mi><mi>r</mi><mi>e</mi><mi>s</mi><mi>s</mi><mi>u</mi><mi>r</mi><mi>e</mi><mi> </mi><mi>o</mi><mi>f</mi><mi> </mi><msub><mrow><mi>A</mi></mrow><mrow><mn>2</mn></mrow></msub><mo>=</mo><mfrac><mrow><mo>0.</mo><mn>8</mn></mrow><mrow><mn>1.2</mn></mrow></mfrac><mo>×</mo><mn>1</mn><mi> </mi></math><br/><math><mi>P</mi><mi>a</mi><mi>r</mi><mi>t</mi><mi>i</mi><mi>a</mi><mi>l</mi><mi> </mi><mi>p</mi><mi>r</mi><mi>e</mi><mi>s</mi><mi>s</mi><mi>u</mi><mi>r</mi><mi>e</mi><mi> </mi><mi>o</mi><mi>f</mi><mi> </mi><mi>A</mi><mo>=</mo><mfrac><mrow><mo>0.</mo><mn>4</mn></mrow><mrow><mn>1.2</mn></mrow></mfrac><mo>×</mo><mn>1</mn><mi> </mi></math><br/><math><msub><mrow><mi>k</mi></mrow><mrow><mi>p</mi></mrow></msub><mo>=</mo><mfrac><mrow><msup><mrow><mfenced separators="|"><mrow><mfrac><mrow><mn>0.4</mn></mrow><mrow><mn>1.2</mn></mrow></mfrac></mrow></mfenced></mrow><mrow><mn>2</mn></mrow></msup><mo>×</mo><mn>1</mn></mrow><mrow><mfenced separators="|"><mrow><mfrac><mrow><mn>0.8</mn></mrow><mrow><mn>1.2</mn></mrow></mfrac></mrow></mfenced><mo>×</mo><mn>1</mn><mi> </mi></mrow></mfrac><mo>=</mo><mfrac><mrow><mn>1</mn></mrow><mrow><mn>6</mn></mrow></mfrac></math><br/><math><mo>∆</mo><mi>G</mi><mo>°</mo><mo>=</mo><mi> </mi><mo>-</mo><mi>R</mi><mi>T</mi><mi>l</mi><mi>n</mi><mi>k</mi><mo>=</mo><mn>-8.314×320</mn><mi> </mi><mi>l</mi><mi>n</mi><mfrac><mrow><mn>1</mn></mrow><mrow><mn>6</mn></mrow></mfrac></math><br/><math><mo>=</mo><mn>8.314×320</mn><mi> </mi><mfenced separators="|"><mrow><mn>0.693</mn><mo>+</mo><mn>1.098</mn></mrow></mfenced></math><br/><math xmlns="http://www.w3.org/1998/Math/MathML"><mo>⋍</mo><mn>4763</mn><mi> </mi><mi>J</mi><mo>/</mo><mi>m</mi><mi>o</mi><mi>l</mi><mi>e</mi></math></div>


title: at-a-point-15-maway-from-the-base-ofa-15-mhigh-house-the-angle-of-elevation-of-the-top-is
slug: at-a-point-15-maway-from-the-base-ofa-15-mhigh-house-the-angle-of-elevation-of-the-top-is-70685
tags: ['Mathematics', 'Heights and Distances', 'NDA', 'NDA 2011 (Phase 2)']
source_db: MarksBatch1_P2.db
question:
<div class="question">At a point 15 maway from the base ofa 15 mhigh house, the angle of elevation of the top is $\quad$</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">$90^{\circ}$</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">$60^{\circ}$</span> </li><li class="correct"> <span class="option-label">C</span> <span class="option-data">$45^{\circ}$</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><li class=""> <span class="option-label">D</span> <span class="option-data">$30^{\circ}$</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">$45^{\circ}$</span> </div>

answer:
<div class="solution"><img src="https://cdn-question-pool.getmarks.app/pyq/nda/-s8RHt3YXW7ksodLW-qExUuE8K_tGCrnR1Pk27gN1gY.original.fullsize.png"/><br/><br/>Let $A B$ be the house of height $15 \mathrm{~m}$. Let $B$ be the base of house and $C$ be the point $15 \mathrm{~m}$ away from the base of a house. Let ' $\theta$ ' be the angle of elevation. So, in $\Delta A B C$,<br/>we have $\tan \theta=\frac{A B}{B C}=\frac{15}{15}=1$<br/>$\Rightarrow \tan \theta=\tan 45^{\circ} \quad\left(\because \tan 45^{\circ}=1\right)$<br/>$\Rightarrow \theta=45^{\circ}$<br/>Hence, the angle of elevation of the top is $45^{\circ}$</div>


title: at-an-extreme-point-of-a-function-f-x-the-tangent-to-the-curve-is
slug: at-an-extreme-point-of-a-function-f-x-the-tangent-to-the-curve-is-70345
question: <div class="question">At an extreme point of a function $f(x)$, the tangent to the curve is</div>
tags: ['Mathematics', 'Application of Derivatives', 'NDA', 'NDA 2011 (Phase 2)']
source_db: MarksBatch1_P2.db
options:
<ul class="options"> <li class="correct"> <span class="option-label">A</span> <span class="option-data">parallel to the $\mathrm{x}$ -axis</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">perpendicular to the $\mathrm{x}$ -axis</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">inclined at an angle $45^{\circ}$ to the $\mathrm{x}$ -axis</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">inclined at an angle $60^{\circ}$ to the $\mathrm{x}$ -axis</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">parallel to the $\mathrm{x}$ -axis</span> </div>

answer:
<div class="solution">At an extreme point of a function $f(x)$, slope is always zero. Thus, At an extreme point of a function $f(x)$, the tangent to the curve is parallel to the $\mathrm{x}$ -axis.</div>


title: at-how-many-points-is-the-function-f-x-x-discontinuous
slug: at-how-many-points-is-the-function-f-x-x-discontinuous-91403
question: <div class="question">At how many points is the function $f(x)=[x]$ discontinuous?</div>
tags: ['Mathematics', 'Continuity and Differentiability', 'NDA', 'NDA 2010 (Phase 2)']
source_db: MarksBatch1_P2.db
options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">1</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">2</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">3</span> </li><li class="correct"> <span class="option-label">D</span> <span class="option-data">Infinite</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">Infinite</span> </div>

answer:
<div class="solution">Given, $f(x)=[x]$ Let ' $c$ 'be any real number. $f$ is continuous at $x=c$ ifL.H.L. $=\mathrm{R}$.H.L. $=f(c)$<br/>i.e., $\lim _{x \rightarrow c^{-}} f(x)=\lim _{x \rightarrow c^{+}} f(x)=f(c)$<br/>L.H.L. $=\lim _{x \rightarrow c^{-}} f(x)=\lim _{x \rightarrow c^{-}}[x]=\mathrm{c}^{-1}$<br/>R.H.L. $=\lim _{x \rightarrow c^{+}} f(x)=\lim _{x \rightarrow c^{+}}[x]=\mathrm{c}$<br/>Since, L.H.L. $\neq$ R.H.L. <br/>$f$ is discontinous for all $\mathrm{x} \in \mathrm{R}$. <br/>So, $[x]$ is discontinuous at infinite points.</div>


title: at-metaphase-chromosomes-are-attached-to-the-spindle-fibres-by-their
slug: at-metaphase-chromosomes-are-attached-to-the-spindle-fibres-by-their-23461
question: <div class="question">At metaphase, chromosomes are attached to the spindle fibres by their</div>
tags: ['Biology', 'Cell Cycle and Cell Division', 'NEET', 'NEET 2011 (Mains)']
source_db: MarksBatch1_P2.db
options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">satellites</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">secondary constrictions</span> </li><li class="correct"> <span class="option-label">C</span> <span class="option-data">kinetochores</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">centromere</span> </li> </ul>

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

answer:
<div class="solution">Kinetochores are small disc-shaped proteinous structures present at the surface of the centromere. These structures serve as the sites of attachment of spindle fibres to the chromosomes that are moved into position at the centre of the cell.</div>


title: at-puberty-only-primary-follicles-remain-are-left-in-each-ovary
slug: at-puberty-only-primary-follicles-remain-are-left-in-each-ovary-15509
tags: ['Biology', 'Human Reproduction', 'NEET']
source_db: MarksBatch1_P2.db
question:
<div class="question">At puberty, only <u>                     </u> primary follicles remain are left in each ovary.</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">200-300 million</span> </li><li class="correct"> <span class="option-label">B</span> <span class="option-data">60000-80000</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 million</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">6000-8000</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">60000-80000</span> </div>

answer:
<div class="solution">A large number of primary follicles degenerate during the phase from birth to puberty. Therefore, at puberty, only 60,000-80,000 primary follicles are left in each ovary. The primary follicles get surrounded by more layers of granulosa cells and a new theca and are called secondary follicles.</div>


tags: ['Chemistry', 'Thermodynamics (C)', 'NEET', 'NEET 2020 (Phase 2)']
source_db: MarksBatch1_P2.db
title:
at-standard-conditions-if-the-change-in-the-enthalpy-for-the-following-reaction-is-109-kjmol-1-h-2-g-br-2-g-2-hbr-g-given-that-bond-energy-of-h-2-and-

slug:
at-standard-conditions-if-the-change-in-the-enthalpy-for-the-following-reaction-is-109-kjmol-1-h-2-g-br-2-g-2-hbr-g-given-that-bond-energy-of-h-2-and-70777

question:
<div class="question"><p>At standard conditions, if the change in the enthalpy for the following reaction is <math xmlns="http://www.w3.org/1998/Math/MathML"><mo>-</mo><mn>109</mn><mo> </mo><msup><mi>kJmol</mi><mrow><mo>-</mo><mn>1</mn></mrow></msup></math></p><p><math xmlns="http://www.w3.org/1998/Math/MathML"><msub><mi mathvariant="normal">H</mi><mrow><mn>2</mn><mo>(</mo><mi mathvariant="normal">g</mi><mo>)</mo></mrow></msub><mo>+</mo><msub><mi>Br</mi><mrow><mn>2</mn><mo>(</mo><mi mathvariant="normal">g</mi><mo>)</mo></mrow></msub><mo>→</mo><mn>2</mn><msub><mi>HBr</mi><mrow><mo>(</mo><mi mathvariant="normal">g</mi><mo>)</mo></mrow></msub></math></p><p>Given that bond energy of <math xmlns="http://www.w3.org/1998/Math/MathML"><msub><mi mathvariant="normal">H</mi><mn>2</mn></msub></math> and <math xmlns="http://www.w3.org/1998/Math/MathML"><msub><mi>Br</mi><mn>2</mn></msub></math> is <math xmlns="http://www.w3.org/1998/Math/MathML"><mn>435</mn><mo> </mo><msup><mi>kJmol</mi><mrow><mo>-</mo><mn>1</mn></mrow></msup></math> and <math xmlns="http://www.w3.org/1998/Math/MathML"><mn>192</mn><mo> </mo><msup><mi>kJmol</mi><mrow><mo>-</mo><mn>1</mn></mrow></msup></math>, respectively, what is the bond energy (in <math xmlns="http://www.w3.org/1998/Math/MathML"><mi>kJ</mi><mo> </mo><msup><mi>mol</mi><mrow><mo>-</mo><mn>1</mn></mrow></msup></math>) of <math xmlns="http://www.w3.org/1998/Math/MathML"><mi>HBr</mi><mo>?</mo></math></p></div>

options:
<ul class="options"> <li class="correct"> <span class="option-label">A</span> <span class="option-data"><math xmlns="http://www.w3.org/1998/Math/MathML"><mn>368</mn></math></span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li><li class=""> <span class="option-label">B</span> <span class="option-data"><math xmlns="http://www.w3.org/1998/Math/MathML"><mn>736</mn></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>518</mn></math></span> </li><li class=""> <span class="option-label">D</span> <span class="option-data"><math xmlns="http://www.w3.org/1998/Math/MathML"><mn>259</mn></math></span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value"><math xmlns="http://www.w3.org/1998/Math/MathML"><mn>368</mn></math></span> </div>

answer:
<div class="solution"><math xmlns="http://www.w3.org/1998/Math/MathML"><mi>Δ</mi><mi mathvariant="normal">H</mi><mo>=</mo><mi>Σ</mi><mo>(</mo><mi mathvariant="normal">B</mi><mo>·</mo><mi mathvariant="normal">E</mi><msub><mo>)</mo><mtext>Reactants </mtext></msub><mo>-</mo><mi>Σ</mi><mo>(</mo><mi mathvariant="normal">B</mi><mo>.</mo><mi mathvariant="normal">E</mi><msub><mo>)</mo><mtext>Products </mtext></msub></math><br/><math xmlns="http://www.w3.org/1998/Math/MathML"><mo>-</mo><mn>109</mn><mo>=</mo><mfenced close="]" open="["><mrow><mi mathvariant="normal">B</mi><mo>·</mo><msub><mi mathvariant="normal">E</mi><mrow><mo>(</mo><mi mathvariant="normal">H</mi><mo>-</mo><mi mathvariant="normal">H</mi><mo>)</mo></mrow></msub><mo>+</mo><mi mathvariant="normal">B</mi><mo>·</mo><msub><mi mathvariant="normal">E</mi><mrow><mo>(</mo><mi>Br</mi><mo>-</mo><mi>Br</mi><mo>)</mo></mrow></msub></mrow></mfenced><mo>-</mo><mfenced close="]" open="["><mrow><mn>2</mn><mo>×</mo><mi mathvariant="normal">B</mi><mo>·</mo><msub><mi mathvariant="normal">E</mi><mrow><mo>(</mo><mi mathvariant="normal">H</mi><mo>-</mo><mi>Br</mi><mo>)</mo></mrow></msub></mrow></mfenced></math><br/><math xmlns="http://www.w3.org/1998/Math/MathML"><mo>-</mo><mn>109</mn><mo>=</mo><mn>435</mn><mo>+</mo><mn>192</mn><mo>-</mo><mn>2</mn><mo>×</mo><mi mathvariant="normal">B</mi><mo>·</mo><msub><mi mathvariant="normal">E</mi><mrow><mo>(</mo><mi mathvariant="normal">H</mi><mo>-</mo><mi>Br</mi><mo>)</mo></mrow></msub></math><br/><math xmlns="http://www.w3.org/1998/Math/MathML"><mi mathvariant="normal">B</mi><mo>.</mo><msub><mi mathvariant="normal">E</mi><mrow><mo>(</mo><mi mathvariant="normal">H</mi><mo>-</mo><mi>Br</mi><mo>)</mo></mrow></msub><mo>=</mo><mfrac><mrow><mn>435</mn><mo>+</mo><mn>192</mn><mo>+</mo><mn>109</mn></mrow><mn>2</mn></mfrac><mo>=</mo><mn>368</mn><mo> </mo><mi>KJ</mi><mo>/</mo><mi>mol</mi></math></div>


tags: ['Chemistry', 'Thermodynamics (C)', 'WBJEE', 'WBJEE 2023']
source_db: MarksBatch1_P2.db
title:
at-stp-the-dissociation-reaction-of-water-is-mathrmh2-mathrmo-rightleftharpoons-mathrmhaq-mathrmohaq-and-the-mathrmph-of-water-is-70-the-change-of-sta

slug:
at-stp-the-dissociation-reaction-of-water-is-mathrmh2-mathrmo-rightleftharpoons-mathrmhaq-mathrmohaq-and-the-mathrmph-of-water-is-70-the-change-of-sta-59711

question:
<div class="question">At STP, the dissociation reaction of water is \(\mathrm{H}_2 \mathrm{O} \rightleftharpoons \mathrm{H}^{+}\)(aq.) \(+\mathrm{OH}^{-}\)(aq.), and the \(\mathrm{pH}\) of water is 7.0. The change of standard free energy \(\left(\Delta \mathrm{G}^{\circ}\right)\) for the above dissociation process is given by</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">\(20301 \mathrm{~cal} / \mathrm{mol}\)</span> </li><li class="correct"> <span class="option-label">B</span> <span class="option-data">\(19091 \mathrm{~cal} / \mathrm{mol}\)</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">\(20096 \mathrm{~cal} / \mathrm{mol}\)</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">\(21301 \mathrm{~cal} / \mathrm{mol}\)</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">\(19091 \mathrm{~cal} / \mathrm{mol}\)</span> </div>

answer:
<div class="solution">\(\begin{aligned}<br/>&amp; \text {Hint : } \Delta G^{\circ}=-2.303 R T \log \mathrm{K}_{\mathrm{w}} \\<br/>&amp; =-2.303 \times 1.987 \times 298 \log 10^{-14} \\<br/>&amp; =+2.303 \times 1.987 \times 298 \times 14 \mathrm{~cal} / \mathrm{mol} \quad \quad\left[\mathrm{K}_{\mathrm{w}}=\left[\mathrm{H}^{+}\right][\mathrm{OH}]=10^{-7} \times 10^{-7}=10^{-14} \mathrm{~as~} \mathrm{pH}=7\right] \\<br/>&amp; =19091.3 \mathrm{cal} / \mathrm{mol}=19091 \mathrm{cal} / \mathrm{mol}<br/>\end{aligned}\)</div>


tags: ['Chemistry', 'Chemical Kinetics', 'AP EAMCET', 'AP EAMCET 2018 (23 Apr Shift 2)']
source_db: MarksBatch1_P2.db
title:
at-t-k-the-following-data-were-obtained-for-a-general-reaction-a-b-c-products-beginarrayccccc-hline-expt-beginarrayc-initial-a-endarray-beginarrayc-in

slug:
at-t-k-the-following-data-were-obtained-for-a-general-reaction-a-b-c-products-beginarrayccccc-hline-expt-beginarrayc-initial-a-endarray-beginarrayc-in-42830

question:
<div class="question">At $T(\mathrm{~K})$, the following data were obtained for a general reaction, $A+B+C \longrightarrow$ products<br/>\begin{array}{ccccc}<br/>\hline Expt. &amp; \begin{array}{c} <br/>Initial \\<br/>{[A]}<br/>\end{array} &amp; \begin{array}{c} <br/>Initial \\<br/>{[B]}<br/>\end{array} &amp; \begin{array}{c} <br/>Initial \\<br/>{[C]}<br/>\end{array} &amp; Initial rate \\<br/>\hline 1. &amp; 0.02 \mathrm{M} &amp; 0.1 \mathrm{M} &amp; 0.03 \mathrm{M} &amp; 2.4 \times 10^{-6} \mathrm{~ms}^{-1} \\<br/>\hline 2. &amp; 0.02 \mathrm{M} &amp; 0.2 \mathrm{M} &amp; 0.03 \mathrm{M} &amp; 4.8 \times 10^{-6} \mathrm{~ms}^{-1} \\<br/>\hline 3. &amp; 0.02 \mathrm{M} &amp; 0.2 \mathrm{M} &amp; 0.06 \mathrm{M} &amp; 9.6 \times 10^{-6} \mathrm{~ms}^{-1} \\<br/>\hline 4. &amp; 0.04 \mathrm{M} &amp; 0.2 \mathrm{M} &amp; 0.06 \mathrm{M} &amp; 9.6 \times 10^{-6} \mathrm{~ms}^{-1} \\<br/>\hline<br/>\end{array}<br/>The rate constant for the above reaction is</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">$8.0 \times 10^{-4} \mathrm{~s}^{-1}$</span> </li><li class="correct"> <span class="option-label">B</span> <span class="option-data">$8.0 \times 10^{-4} \mathrm{~L} \mathrm{~mol}^{-1} \mathrm{~s}^{-1}$</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">$8.0 \times 10^4 \mathrm{~L} \mathrm{~mol}^{-1} \mathrm{~s}^{-1}$</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">$8.0 \times 10^{-4} \mathrm{~L}^2 \mathrm{~mol}^{-2} \mathrm{~s}^{-1}$</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">$8.0 \times 10^{-4} \mathrm{~L} \mathrm{~mol}^{-1} \mathrm{~s}^{-1}$</span> </div>

answer:
<div class="solution">Comparing expt. (1) and expt. (2).<br/>When $[B]$ is doubled rate of reaction doubles.<br/>$\therefore$ Reaction is first order is $B$.<br/>Comparing expt. (2) and expt (3).<br/>When $[C]$ is doubled rate of reaction doubles.<br/>$\therefore$ Reaction is first order in $C$.<br/>Comparing expt. [3] and expt [4]. When $[A]$ is doubled rate of reaction remains unchanged.<br/>$\therefore$ Reaction is zero order in $A$.<br/>Rate law $=K[A]^0[B]^{\prime}[C]^{\prime}$<br/>Using data of expt. (1) we get<br/>$$<br/>\begin{aligned}<br/>&amp; 2.4 \times 10^{-6}=K[0.02]^0[0.1]^1[0.03]^1 \\<br/>&amp; 2.4 \times 10^{-6}=K \times 1 \times 0.1 \times 0.03 \\<br/>&amp; K=\frac{2.4 \times 10^{-6}}{3 \times 10^{-3}}=0.8 \times 10^{-3}=8.0 \times 10^{-4} \mathrm{~L} \mathrm{~mol}^{-1} \mathrm{~s}^{-1}<br/>\end{aligned}<br/>$$</div>


tags: ['Chemistry', 'Electrochemistry', 'NEET']
source_db: MarksBatch1_P2.db
title:
at-what-conditions-is-the-emf-of-the-cell-equal-to-the-standard-electrode-potential-of-a-given-halfcell

slug:
at-what-conditions-is-the-emf-of-the-cell-equal-to-the-standard-electrode-potential-of-a-given-halfcell-45621

question:
<div class="question">At what conditions is the emf of the cell equal to the standard electrode potential of a given half-cell?</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">When the cell temperature is 298 K.</span> </li><li class="correct"> <span class="option-label">B</span> <span class="option-data">When the cell concentration is unity.</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">When the cell pressure is one bar.</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">When the cell potential is zero.</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">When the cell concentration is unity.</span> </div>

answer:
<div class="solution">If the concentrations of the oxidized and reduced forms of the species in the right-hand half-cell are unity, then the cell potential is equal to the standard electrode potential of the given half-cell.</div>


title: at-what-stage-of-the-cell-cycle-are-histone-proteins-synthesized-in-a-eukaryotic-cell
slug: at-what-stage-of-the-cell-cycle-are-histone-proteins-synthesized-in-a-eukaryotic-cell-95047
tags: ['Biology', 'Cell Cycle and Cell Division', 'JIPMER', 'JIPMER 2007']
source_db: MarksBatch1_P2.db
question:
<div class="question">At what stage of the cell cycle are histone proteins synthesized in a eukaryotic cell ?</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">During entire prophase</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">During telophase</span> </li><li class="correct"> <span class="option-label">C</span> <span class="option-data">During S-phase</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">During $\mathrm{G}_2$ stage of prophase</span> </li> </ul>

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

answer:
<div class="solution">Histone proteins are basic proteins and are used in packing of eukaryotic (absent in prokaryotes) DNA. DNA and histones together comprise chromatin, forming bulk of the eukaryotic chromosomes. Histones are of five major kinds $H_1, H_{2 A}, H_{2 B}, H_3$ and $H_4 . H_1$ histones link neighbouring nucleosomes (fundamental packing units of an eukaryotic chromosome), while other are elements of nucleosome structure. During S-phase of cell cycle synthesis of histone proteins take place because at this stage number of chromosomes become double to that of somatic number.</div>


title: autogamy-can-occur-in-a-chasmogamous-flower-if
slug: autogamy-can-occur-in-a-chasmogamous-flower-if-83989
question: <div class="question">Autogamy can occur in a chasmogamous flower if:</div>
tags: ['Biology', 'Sexual Reproduction in Flowering Plants']
source_db: MarksBatch1_P2.db
options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data"><br/>pollen matures before maturity of ovule<br/></span> </li><li class=""> <span class="option-label">B</span> <span class="option-data"><br/>ovules mature before maturity of pollen<br/></span> </li><li class="correct"> <span class="option-label">C</span> <span class="option-data"><br/>both pollen and ovules mature simultaneously<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/>both anther and stigma are of equal lengths</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value"><br/>both pollen and ovules mature simultaneously<br/></span> </div>

answer:
<div class="solution">The method of self-pollination in which the stigma of a flower receive pollens from the anther of same flower is known as autogamy. For autogamy both sex organs of a chasmogamous flower should mature at the same time. As chasmogamous flowers open at maturity, pollen release and for the process of autogamy stigma receptivity should be synchronised.<br/>In such flowers, the length of anther and stigma plays secondary role in autogamy. e.g., in case of protandry (pollens nature early) and protogyny (stigma matures early) leads to cross-pollination.</div>


title: avena-curvature-test-is-a-bioassay-for-examining-the-activity-of
slug: avena-curvature-test-is-a-bioassay-for-examining-the-activity-of-63403
question: <div class="question">Avena curvature test is a bioassay for examining the activity of</div>
tags: ['Biology', 'Plant - Growth and Development', 'AIIMS', 'AIIMS 2006']
correct_option: <div class="correct-answer"> The correct answer is: <span class="option-value">auxins</span> </div>
source_db: MarksBatch1_P2.db
options:
<ul class="options"> <li class="correct"> <span class="option-label">A</span> <span class="option-data">auxins</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">gibberellins</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">cytokinins</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">ethylene.</span> </li> </ul>

answer:
<div class="solution">Bioassay is a testing of biological activity like growth response of a substance by employing plant part. Avena curvature test is a bioassay for examining the activity of auxins. It is based upon experiments of Went. $10^{\circ}$ curvature is produced by auxin concentration of $150 \mu \mathrm{g} /$ lit at $25^{\circ} \mathrm{C}$ and $90 \%$ relative humidity. It can measure auxin upto 300 $\mu \mathrm{g}$ /itre. Auxin from shoot tip or any other plant organ is allowed to diffuse in a standard size agar block. 15 - $30 \mathrm{~mm}$ long oat coleoptile grown in dark is held vertically over water. $1 \mathrm{~mm}$ tip of coleoptile is removed without injuring the primary leaf. After 3 hours a second decapitation is carried out for $4 \mathrm{~mm}$ distance. Primary leaf is now pulled loose and agar block supported against it at the tip of decapitated coleoptile. After $90-110 \mathrm{~mm}$ the coleoptile is found to have bent. The curvature is measured.</div>


title: b-is-associated-with
slug: b-is-associated-with-66019
tags: ['Mathematics', 'Continuity and Differentiability', 'NDA', 'NDA 2010 (Phase 1)']
source_db: MarksBatch1_P2.db
question:
<div class="question">B is associated with <br/><img src="https://cdn-question-pool.getmarks.app/pyq/nda/KZ_9YHdRVYib_6RC_uIf8TdDaNVmMVwucfK0_fpsgIw.original.fullsize.png"/></div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">$2,3,5,8,9,12$</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">$1,3,5,8,10,12$</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">$1,3,5,8,9,12$</span> </li><li class="correct"> <span class="option-label">D</span> <span class="option-data">None of the above</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">None of the above</span> </div>

answer:
<div class="solution">$\cos x$ is periodic, continuous and differentiable at every point on $(-\infty, \infty)$ and has a period $2 \pi, \cos x$ decreases on $\left(0, \frac{\pi}{2}\right)$ and increases on $\left(\frac{\pi}{2}, \pi\right)$.</div>


title: bark-refers-to
slug: bark-refers-to-17658
question: <div class="question">Bark refers to</div>
tags: ['Biology', 'Anatomy of Flowering Plants', 'AIIMS', 'AIIMS 2009']
source_db: MarksBatch1_P2.db
options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">phellem + phellogen + phelloderm</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">periderm + cortex</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">phellem + phelloderm + secondary phloem</span> </li><li class="correct"> <span class="option-label">D</span> <span class="option-data">periderm + cortex + pericycle + secondary phloem.</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">periderm + cortex + pericycle + secondary phloem.</span> </div>

answer:
<div class="solution">Bark is a loose term and is used to define all the tissues outside vascular cambium. It is differentiated into outer bark or rhytidome (consisting of dead cells) and inner bark (of living cells, i.e., periderm, cortex, pericycle and secondary phloem). The outer layers of the bark are being constantly peeled off on account of the formation of new secondary vascular tissues in the interior. Bark is insect repellent, decay proof, fire-proof and acts as a heat screen.</div>


tags: ['Chemistry', 'Redox Reactions']
options: None
correct_option: None
source_db: MarksBatch1_P2.db
title:
based-on-standard-electrode-potential-values-suggest-which-of-the-following-reactions-would-take-place-consult-the-book-for-edegree-value-i-cu-zn-2-cu

slug:
based-on-standard-electrode-potential-values-suggest-which-of-the-following-reactions-would-take-place-consult-the-book-for-edegree-value-i-cu-zn-2-cu-73549

question:
<div class="question">Based on standard electrode potential values, suggest which of the following reactions would take place? (Consult the book for E\degree value).<br/>(i) $\mathrm{Cu}+\mathrm{Zn}^{2+} \rightarrow \mathrm{Cu}^{2+}+\mathrm{Zn}$<br/>(ii) $\mathrm{Mg}+\mathrm{Fe}^{2+} \rightarrow \mathrm{Mg}^{2+}+\mathrm{Fe}$<br/>(iii) $\mathrm{Br}^{2+} 2 \mathrm{Cl}^{-} \rightarrow \mathrm{Cl}^2+2 \mathrm{B}^{\mathrm{r}-}$<br/>(iv) $\mathrm{Fe}+\mathrm{Cd}^{2+} \rightarrow \mathrm{Cd}+\mathrm{Fe}^{2+}$</div>

answer:
<div class="solution">(i) $\mathrm{Cu}+\mathrm{Zn}^{2+} \rightarrow \mathrm{Cu}^{2+}+\mathrm{Zn}$<br/>Here $\mathrm{Cu}$ undergoes oxidation so it acts as anode and $\mathrm{Zn}$ acts as the cathode. So from the table. For example $\mathrm{E}^{\circ}$ anode $=-0.76 \mathrm{~V}$<br/>For anode $\mathrm{E}^{\circ}$ anode $=0.52 \mathrm{~V}$<br/>$\mathrm{E}^{\circ}$ cell $=-0.24 \mathrm{~V}$<br/>As the EMF of the cell is negative the given reaction will not occur spontaneously if they were to form a cell placed as electrodes.<br/>(ii) $\mathrm{Mg}+\mathrm{Fe}^{2+} \rightarrow \mathrm{Mg}^{2+}+\mathrm{Fe}$<br/>Similarly, we can say that $\mathrm{Mg}$ undergoes oxidation and Fe undergoes reduction,<br/>$\mathrm{E}^{\circ}$ cathode $=-0.44 \mathrm{~V}$<br/>$\mathrm{E}^{\circ}$ anode $=-2.36 \mathrm{~V}$<br/>$\mathrm{E}^{\circ}$ cell $=+1.92 \mathrm{~V}$<br/>Positive EMF implies that the reaction will give out energy and attain stability, thus it will occur spontaneously. So the given redox reaction will occur.<br/>(iii) $\mathrm{Br}_2+2 \mathrm{Cl}^{-} \rightarrow \mathrm{Cl}_2+2 \mathrm{Br}^{-}$<br/>Here $\mathrm{Br}$ undergoes reduction thus acting as cathode and $\mathrm{Cl}$ acting as the anode.<br/>For cathode $\mathrm{E}^{\circ}$ cathode $=1.09 \mathrm{~V}$<br/>For anode $\mathrm{E}^{\circ}$ cathode $=1.36 \mathrm{~V}$<br/>$\mathrm{E}^{\circ}$ cell $=-0.25$<br/>The negative potential prevents easy reaction, so the redox reaction will not occur.<br/>(iv) $\mathrm{Fe}+\mathrm{Cd}^{2+} \rightarrow \mathrm{Cd}+\mathrm{Fe}^{2+}$<br/>$\mathrm{Fe}$ is the cathode and $\mathrm{Cd}$ is the anode<br/>For cathode $\mathrm{E}^{\circ}$ cathode $=-0.44 \mathrm{~V}$<br/>For anode $\mathrm{E}^{\circ}$ anode $=-0.40 \mathrm{~V}$<br/>$\mathrm{E}^{\circ}$ cell $=-0.04 \mathrm{~V}$<br/>The negative potential prevents easy reaction, so the redox reaction will not occur.</div>


title: bast-fibres-are-made-up-of
slug: bast-fibres-are-made-up-of-25133
question: <div class="question">Bast fibres are made up of</div>
tags: ['Biology', 'Anatomy of Flowering Plants', 'NEET']
source_db: MarksBatch1_P2.db
options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">Parenchyma cells</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">Collenchyma cells</span> </li><li class="correct"> <span class="option-label">C</span> <span class="option-data">Sclerenchyma 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><li class=""> <span class="option-label">D</span> <span class="option-data">Chlorenchyma cells</span> </li> </ul>

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

answer:
<div class="solution">Phloem fibres (bast fibres) are made up of sclerenchymatous cells. These are generally absent in the primary phloem but are found in the secondary phloem. These are much elongated, unbranched and have pointed, needle-like apices. The cell wall of phloem fibres is quite thick. At maturity, these fibres lose their protoplasm and become dead. Phloem fibres of jute, flax and hemp are used commercially.</div>


tags: ['Biology', 'Cell Cycle and Cell Division', 'AIIMS', 'AIIMS 2012']
source_db: MarksBatch1_P2.db
title:
beads-on-string-like-structures-of-a-are-seen-in-b-which-further-condense-to-form-chromosomes-in-c-stage-of-cell-division-a-b-c

slug:
beads-on-string-like-structures-of-a-are-seen-in-b-which-further-condense-to-form-chromosomes-in-c-stage-of-cell-division-a-b-c-14293

question:
<div class="question">Beads on string like structures of $A$ are seen in $B$, which further condense to form chromosomes in C stage of cell division.<br/>A $\quad$B $\quad$ C</div>

options:
<ul class="options"> <li class="correct"> <span class="option-label">A</span> <span class="option-data">Chromonema Chromatin Metaphase</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">Chromatin Chromatid Metaphase</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">Chromonema Chromosome Anaphase</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">Chromonema Chromatid Anaphase.</span> </li> </ul>

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

answer:
<div class="solution">The "beads-on-a-string" structure is seen in electron microscope of isolated metaphase chromosomes. The chromonema form the gene bearing portions of the chromosome. Basically chromonema is made up of nucleosome chains. Nucleosome chain gives a beads on string appearance under electron microscope. Nucleosome is the fundamental packaging unit in eukaryotic chromosomes.</div>


tags: ['Mathematics', 'Statistics', 'NDA', 'NDA 2011 (Phase 1)']
source_db: MarksBatch1_P2.db
title:
beginarrayccccc-hline-class-interval-15-610-1115-1620-hline-frequency-3-7-6-5-hline-endarray-consider-the-following-statements-in-respect-of-the-above

slug:
beginarrayccccc-hline-class-interval-15-610-1115-1620-hline-frequency-3-7-6-5-hline-endarray-consider-the-following-statements-in-respect-of-the-above-54204

question:
<div class="question">\begin{array}{|c|c|c|c|c|}<br/>\hline Class Interval &amp; 1-5 &amp; 6-10 &amp; 11-15 &amp; 16-20 \\<br/>\hline Frequency &amp; 3 &amp; 7 &amp; 6 &amp; 5 \\<br/>\hline<br/>\end{array} Consider the following statements in respect of the above frequency distribution.<br/>I. The median is contained in the modal class.<br/>II. The distribution is bell-shaped. Which of the above statements is/are correct?</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">Only I</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">Only II</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">Both I and II</span> </li><li class="correct"> <span class="option-label">D</span> <span class="option-data">Neither I nor II</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">Neither I nor II</span> </div>

answer:
<div class="solution">\begin{array}{|c|c|c|}<br/>\hline Class Interval &amp; \mathrm{f} &amp; cf \\<br/>\hline 0.5-5.5 &amp; 3 &amp; 3 \\<br/>\hline 5.5-10.5 &amp; 7 &amp; 10 \\<br/>\hline 10.5-15.5 &amp; 6 &amp; 16 \\<br/>\hline 15.5-20.5 &amp; 5 &amp; 21 \\<br/>\hline Total &amp; 21 &amp; 50 \\<br/>\hline<br/>\end{array} $N=21$<br/>$\frac{N}{2}=\frac{21}{2}=10.5$<br/>Median class is $10.5-15.5$<br/>Hence, Median $=10.5+\frac{10.5-10}{6} \times 5$<br/>$=10.5+0.417=10.917$<br/>Thus, median is not contained in the modal class and the distribution is not bell-shaped.</div>


tags: ['Mathematics', 'Statistics', 'NDA', 'NDA 2008 (Phase 2)']
correct_option: <div class="correct-answer"> The correct answer is: <span class="option-value">6</span> </div>
source_db: MarksBatch1_P2.db
title:
beginarrayccccc-hline-mathrmx-1-2-3-4-hline-frequency-2-3-f-5-hline-endarray-the-frequency-distribution-of-a-discrete-variable-x-with-one-missing-freq

slug:
beginarrayccccc-hline-mathrmx-1-2-3-4-hline-frequency-2-3-f-5-hline-endarray-the-frequency-distribution-of-a-discrete-variable-x-with-one-missing-freq-19339

question:
<div class="question">\begin{array}{|c|c|c|c|c|}<br/>\hline \mathrm{X} &amp; 1 &amp; 2 &amp; 3 &amp; 4 \\<br/>\hline Frequency &amp; 2 &amp; 3 &amp; f &amp; 5 \\<br/>\hline<br/>\end{array} The frequency distribution of a discrete variable $X$ with one missing frequency $f$ is given above. If the arithmetic mean of<br/>$X$ is $\frac{23}{8}$, what is the value of the missing frequency?</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">5</span> </li><li class="correct"> <span class="option-label">B</span> <span class="option-data">6</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li><li class=""> <span class="option-label">C</span> <span class="option-data">8</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">10</span> </li> </ul>

answer:
<div class="solution">Arithmetic mean $=\frac{2 \times 1+3 \times 2+3 f+4 \times 5}{2+3+f+5}$<br/>$\Rightarrow \frac{23}{8}=\frac{28+3 f}{10+f}$<br/>$230+23 f=224+24 f$<br/>$\Rightarrow f=6$</div>


tags: ['Mathematics', 'Statistics', 'NDA', 'NDA 2011 (Phase 1)']
correct_option: <div class="correct-answer"> The correct answer is: <span class="option-value">26</span> </div>
source_db: MarksBatch1_P2.db
title:
beginarraycccccc-hline-class-interval-010-1020-2030-3040-4050-hline-frequency-5-10-20-5-10-hline-endarray-what-is-the-mean-of-the-above-frequency-dist

slug:
beginarraycccccc-hline-class-interval-010-1020-2030-3040-4050-hline-frequency-5-10-20-5-10-hline-endarray-what-is-the-mean-of-the-above-frequency-dist-30241

question:
<div class="question">\begin{array}{|c|c|c|c|c|c|}<br/>\hline Class Interval &amp; 0-10 &amp; 10-20 &amp; 20-30 &amp; 30-40 &amp; 40-50 \\<br/>\hline Frequency &amp; 5 &amp; 10 &amp; 20 &amp; 5 &amp; 10 \\<br/>\hline<br/>\end{array}<br/>What is the mean of the above frequency distribution?</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">25</span> </li><li class="correct"> <span class="option-label">B</span> <span class="option-data">26</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">27</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">28</span> </li> </ul>

answer:
<div class="solution">\begin{array}{|c|c|c|c|c|}<br/>\hline Class Interval &amp; \mathbf{f} &amp; \mathbf{e f} &amp; \mathbf{x} &amp; \mathbf{f x} \\<br/>\hline 0-10 &amp; 5 &amp; 5 &amp; 5 &amp; 25 \\<br/>\hline 10-20 &amp; 10 &amp; 15 &amp; 15 &amp; 150 \\<br/>\hline 20-30 &amp; 20 &amp; 35 &amp; 25 &amp; 500 \\<br/>\hline 30-40 &amp; 5 &amp; 40 &amp; 35 &amp; 175 \\<br/>\hline 40-50 &amp; 10 &amp; 50 &amp; 45 &amp; 450 \\<br/>\hline Total &amp; 50 &amp; 145 &amp; 125 &amp; 1300 \\<br/>\hline<br/>\end{array} $\frac{N}{2}=\frac{50}{2}=25$<br/>Mean $=\frac{\sum f x}{\sum f}=\frac{1300}{50}=26$</div>


tags: ['Mathematics', 'Statistics', 'NDA', 'NDA 2011 (Phase 1)']
correct_option: <div class="correct-answer"> The correct answer is: <span class="option-value">25</span> </div>
source_db: MarksBatch1_P2.db
title:
beginarraycccccc-hline-class-interval-010-1020-2030-3040-4050-hline-frequency-5-10-20-5-10-hline-endarray-what-is-the-median-of-the-above-frequency-di

slug:
beginarraycccccc-hline-class-interval-010-1020-2030-3040-4050-hline-frequency-5-10-20-5-10-hline-endarray-what-is-the-median-of-the-above-frequency-di-44199

question:
<div class="question">\begin{array}{|c|c|c|c|c|c|}<br/>\hline Class Interval &amp; 0-10 &amp; 10-20 &amp; 20-30 &amp; 30-40 &amp; 40-50 \\<br/>\hline Frequency &amp; 5 &amp; 10 &amp; 20 &amp; 5 &amp; 10 \\<br/>\hline<br/>\end{array}<br/>What is the median of the above frequency $\begin{array}{ll}\text { distribution? } &amp; {}\end{array}$</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">23</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">24</span> </li><li class="correct"> <span class="option-label">C</span> <span class="option-data">25</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">26</span> </li> </ul>

answer:
<div class="solution">\begin{array}{|c|c|c|c|c|}<br/>\hline Class Interval &amp; \mathbf{f} &amp; \mathbf{e f} &amp; \mathbf{x} &amp; \mathbf{f x} \\<br/>\hline 0-10 &amp; 5 &amp; 5 &amp; 5 &amp; 25 \\<br/>\hline 10-20 &amp; 10 &amp; 15 &amp; 15 &amp; 150 \\<br/>\hline 20-30 &amp; 20 &amp; 35 &amp; 25 &amp; 500 \\<br/>\hline 30-40 &amp; 5 &amp; 40 &amp; 35 &amp; 175 \\<br/>\hline 40-50 &amp; 10 &amp; 50 &amp; 45 &amp; 450 \\<br/>\hline Total &amp; 50 &amp; 145 &amp; 125 &amp; 1300 \\<br/>\hline<br/>\end{array} $\frac{N}{2}=\frac{50}{2}=25$<br/>Median group is 20-30. $\Rightarrow$ Median $=20+\frac{25-15}{20} \times 10=20+5=25$</div>


tags: ['Mathematics', 'Statistics', 'NDA', 'NDA 2011 (Phase 2)']
correct_option: <div class="correct-answer"> The correct answer is: <span class="option-value">1997</span> </div>
source_db: MarksBatch1_P2.db
title:
beginarraycccccccc-hline-multirow2-year-multicolumn3c-male-multicolumn2c-female-multirow2-total-cline-2-7-urban-rural-total-urban-rural-total-hline-19-1

slug:
beginarraycccccccc-hline-multirow2-year-multicolumn3c-male-multicolumn2c-female-multirow2-total-cline-2-7-urban-rural-total-urban-rural-total-hline-19-1-85792

question:
<div class="question">\begin{array}{|c|c|c|c|c|c|c|c|}<br/>\hline \multirow{2}{*} { Year } &amp; \multicolumn{3}{|c|} { Male } &amp; \multicolumn{2}{|c|} { Female } &amp; \multirow{2}{*} { Total } \\<br/>\cline { 2 - 7 } &amp; &amp; Urban &amp; Rural &amp; Total &amp; Urban &amp; Rural &amp; Total &amp; \\<br/>\hline 1995 &amp; 280 &amp; 350 &amp; &amp; &amp; 310 &amp; &amp; 1350 \\<br/>\hline 1996 &amp; 370 &amp; &amp; 670 &amp; 180 &amp; &amp; 450 &amp; \\<br/>\hline 1997 &amp; &amp; 130 &amp; 440 &amp; &amp; 190 &amp; &amp; \\<br/>\hline 1998 &amp; 400 &amp; 280 &amp; &amp; 290 &amp; &amp; &amp; \\<br/>\hline Total &amp; &amp; &amp; &amp; 1060 &amp; 850 &amp; &amp; \\<br/>\hline<br/>\end{array}<br/>In which year is the male population minimum?</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">1995</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">1996</span> </li><li class="correct"> <span class="option-label">C</span> <span class="option-data">1997</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">1998</span> </li> </ul>

answer:
<div class="solution">Complete table is<br/>\begin{array}{|c|c|c|c|c|c|c|c|}<br/>\hline \multirow{2}{*} { Year } &amp; \multicolumn{3}{|c|} { Male } &amp; \multicolumn{3}{|c|} { Female } &amp; \multirow{2}{*} { Total } \\<br/>\cline { 2 - 8 } &amp; Urban &amp; Rural &amp; Total &amp; Urban &amp; Rural &amp; Total &amp; \\<br/>\hline 1995 &amp; 280 &amp; 350 &amp; 630 &amp; 410 &amp; 310 &amp; 720 &amp; 1350 \\<br/>\hline 1996 &amp; 370 &amp; 300 &amp; 670 &amp; 180 &amp; 270 &amp; 450 &amp; 1120 \\<br/>\hline 1997 &amp; 310 &amp; 130 &amp; 440 &amp; 180 &amp; 190 &amp; 370 &amp; 810 \\<br/>\hline 1998 &amp; 400 &amp; 280 &amp; 680 &amp; 290 &amp; 80 &amp; 370 &amp; 1050 \\<br/>\hline Total &amp; 1360 &amp; 1060 &amp; 2420 &amp; 1060 &amp; 850 &amp; 1910 &amp; 4330 \\<br/>\hline<br/>\end{array}<br/>In 1997 , the male population is minimum.</div>


tags: ['Mathematics', 'Statistics', 'NDA', 'NDA 2011 (Phase 2)']
correct_option: <div class="correct-answer"> The correct answer is: <span class="option-value">90</span> </div>
source_db: MarksBatch1_P2.db
title:
beginarraycccccccc-hline-multirow2-year-multicolumn3c-male-multicolumn2c-female-multirow2-total-cline-2-7-urban-rural-total-urban-rural-total-hline-19-2

slug:
beginarraycccccccc-hline-multirow2-year-multicolumn3c-male-multicolumn2c-female-multirow2-total-cline-2-7-urban-rural-total-urban-rural-total-hline-19-2-22301

question:
<div class="question">\begin{array}{|c|c|c|c|c|c|c|c|}<br/>\hline \multirow{2}{*} { Year } &amp; \multicolumn{3}{|c|} { Male } &amp; \multicolumn{2}{|c|} { Female } &amp; \multirow{2}{*} { Total } \\<br/>\cline { 2 - 7 } &amp; &amp; Urban &amp; Rural &amp; Total &amp; Urban &amp; Rural &amp; Total &amp; \\<br/>\hline 1995 &amp; 280 &amp; 350 &amp; &amp; &amp; 310 &amp; &amp; 1350 \\<br/>\hline 1996 &amp; 370 &amp; &amp; 670 &amp; 180 &amp; &amp; 450 &amp; \\<br/>\hline 1997 &amp; &amp; 130 &amp; 440 &amp; &amp; 190 &amp; &amp; \\<br/>\hline 1998 &amp; 400 &amp; 280 &amp; &amp; 290 &amp; &amp; &amp; \\<br/>\hline Total &amp; &amp; &amp; &amp; 1060 &amp; 850 &amp; &amp; \\<br/>\hline<br/>\end{array}<br/>What is the difference between the number of females and the number of males in the year 1995 ?</div>

options:
<ul class="options"> <li class="correct"> <span class="option-label">A</span> <span class="option-data">90</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">100</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">110</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">120</span> </li> </ul>

answer:
<div class="solution">Complete table is<br/>\begin{array}{|c|c|c|c|c|c|c|c|}<br/>\hline \multirow{2}{*} { Year } &amp; \multicolumn{3}{|c|} { Male } &amp; \multicolumn{3}{|c|} { Female } &amp; \multirow{2}{*} { Total } \\<br/>\cline { 2 - 8 } &amp; Urban &amp; Rural &amp; Total &amp; Urban &amp; Rural &amp; Total &amp; \\<br/>\hline 1995 &amp; 280 &amp; 350 &amp; 630 &amp; 410 &amp; 310 &amp; 720 &amp; 1350 \\<br/>\hline 1996 &amp; 370 &amp; 300 &amp; 670 &amp; 180 &amp; 270 &amp; 450 &amp; 1120 \\<br/>\hline 1997 &amp; 310 &amp; 130 &amp; 440 &amp; 180 &amp; 190 &amp; 370 &amp; 810 \\<br/>\hline 1998 &amp; 400 &amp; 280 &amp; 680 &amp; 290 &amp; 80 &amp; 370 &amp; 1050 \\<br/>\hline Total &amp; 1360 &amp; 1060 &amp; 2420 &amp; 1060 &amp; 850 &amp; 1910 &amp; 4330 \\<br/>\hline<br/>\end{array}<br/>Required difference $=720-630=90$.</div>


tags: ['Mathematics', 'Statistics', 'NDA', 'NDA 2011 (Phase 2)']
correct_option: <div class="correct-answer"> The correct answer is: <span class="option-value">410</span> </div>
source_db: MarksBatch1_P2.db
title:
beginarraycccccccc-hline-multirow2-year-multicolumn3c-male-multicolumn2c-female-multirow2-total-cline-2-7-urban-rural-total-urban-rural-total-hline-19-3

slug:
beginarraycccccccc-hline-multirow2-year-multicolumn3c-male-multicolumn2c-female-multirow2-total-cline-2-7-urban-rural-total-urban-rural-total-hline-19-3-88572

question:
<div class="question">\begin{array}{|c|c|c|c|c|c|c|c|}<br/>\hline \multirow{2}{*} { Year } &amp; \multicolumn{3}{|c|} { Male } &amp; \multicolumn{2}{|c|} { Female } &amp; \multirow{2}{*} { Total } \\<br/>\cline { 2 - 7 } &amp; &amp; Urban &amp; Rural &amp; Total &amp; Urban &amp; Rural &amp; Total &amp; \\<br/>\hline 1995 &amp; 280 &amp; 350 &amp; &amp; &amp; 310 &amp; &amp; 1350 \\<br/>\hline 1996 &amp; 370 &amp; &amp; 670 &amp; 180 &amp; &amp; 450 &amp; \\<br/>\hline 1997 &amp; &amp; 130 &amp; 440 &amp; &amp; 190 &amp; &amp; \\<br/>\hline 1998 &amp; 400 &amp; 280 &amp; &amp; 290 &amp; &amp; &amp; \\<br/>\hline Total &amp; &amp; &amp; &amp; 1060 &amp; 850 &amp; &amp; \\<br/>\hline<br/>\end{array}<br/>What is the female urban population in the year $1995 ?$</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">390</span> </li><li class="correct"> <span class="option-label">B</span> <span class="option-data">410</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">430</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">470</span> </li> </ul>

answer:
<div class="solution">Complete table is<br/>\begin{array}{|c|c|c|c|c|c|c|c|}<br/>\hline \multirow{2}{*} { Year } &amp; \multicolumn{3}{|c|} { Male } &amp; \multicolumn{3}{|c|} { Female } &amp; \multirow{2}{*} { Total } \\<br/>\cline { 2 - 8 } &amp; Urban &amp; Rural &amp; Total &amp; Urban &amp; Rural &amp; Total &amp; \\<br/>\hline 1995 &amp; 280 &amp; 350 &amp; 630 &amp; 410 &amp; 310 &amp; 720 &amp; 1350 \\<br/>\hline 1996 &amp; 370 &amp; 300 &amp; 670 &amp; 180 &amp; 270 &amp; 450 &amp; 1120 \\<br/>\hline 1997 &amp; 310 &amp; 130 &amp; 440 &amp; 180 &amp; 190 &amp; 370 &amp; 810 \\<br/>\hline 1998 &amp; 400 &amp; 280 &amp; 680 &amp; 290 &amp; 80 &amp; 370 &amp; 1050 \\<br/>\hline Total &amp; 1360 &amp; 1060 &amp; 2420 &amp; 1060 &amp; 850 &amp; 1910 &amp; 4330 \\<br/>\hline<br/>\end{array}<br/>Female urban population in the year $1995=410$.</div>


tags: ['Mathematics', 'Statistics', 'NDA', 'NDA 2011 (Phase 2)']
correct_option: <div class="correct-answer"> The correct answer is: <span class="option-value">810</span> </div>
source_db: MarksBatch1_P2.db
title:
beginarraycccccccc-hline-multirow2-year-multicolumn3c-male-multicolumn2c-female-multirow2-total-cline-2-7-urban-rural-total-urban-rural-total-hline-19-4

slug:
beginarraycccccccc-hline-multirow2-year-multicolumn3c-male-multicolumn2c-female-multirow2-total-cline-2-7-urban-rural-total-urban-rural-total-hline-19-4-60073

question:
<div class="question">\begin{array}{|c|c|c|c|c|c|c|c|}<br/>\hline \multirow{2}{*} { Year } &amp; \multicolumn{3}{|c|} { Male } &amp; \multicolumn{2}{|c|} { Female } &amp; \multirow{2}{*} { Total } \\<br/>\cline { 2 - 7 } &amp; &amp; Urban &amp; Rural &amp; Total &amp; Urban &amp; Rural &amp; Total &amp; \\<br/>\hline 1995 &amp; 280 &amp; 350 &amp; &amp; &amp; 310 &amp; &amp; 1350 \\<br/>\hline 1996 &amp; 370 &amp; &amp; 670 &amp; 180 &amp; &amp; 450 &amp; \\<br/>\hline 1997 &amp; &amp; 130 &amp; 440 &amp; &amp; 190 &amp; &amp; \\<br/>\hline 1998 &amp; 400 &amp; 280 &amp; &amp; 290 &amp; &amp; &amp; \\<br/>\hline Total &amp; &amp; &amp; &amp; 1060 &amp; 850 &amp; &amp; \\<br/>\hline<br/>\end{array}<br/>What is the total population for the year 1997?</div>

options:
<ul class="options"> <li class="correct"> <span class="option-label">A</span> <span class="option-data">810</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">830</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">970</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">1030</span> </li> </ul>

answer:
<div class="solution">Complete table is<br/>\begin{array}{|c|c|c|c|c|c|c|c|}<br/>\hline \multirow{2}{*} { Year } &amp; \multicolumn{3}{|c|} { Male } &amp; \multicolumn{3}{|c|} { Female } &amp; \multirow{2}{*} { Total } \\<br/>\cline { 2 - 8 } &amp; Urban &amp; Rural &amp; Total &amp; Urban &amp; Rural &amp; Total &amp; \\<br/>\hline 1995 &amp; 280 &amp; 350 &amp; 630 &amp; 410 &amp; 310 &amp; 720 &amp; 1350 \\<br/>\hline 1996 &amp; 370 &amp; 300 &amp; 670 &amp; 180 &amp; 270 &amp; 450 &amp; 1120 \\<br/>\hline 1997 &amp; 310 &amp; 130 &amp; 440 &amp; 180 &amp; 190 &amp; 370 &amp; 810 \\<br/>\hline 1998 &amp; 400 &amp; 280 &amp; 680 &amp; 290 &amp; 80 &amp; 370 &amp; 1050 \\<br/>\hline Total &amp; 1360 &amp; 1060 &amp; 2420 &amp; 1060 &amp; 850 &amp; 1910 &amp; 4330 \\<br/>\hline<br/>\end{array}<br/>Total population for the year $1997=440+370=810$</div>


tags: ['Mathematics', 'Statistics', 'NDA', 'NDA 2011 (Phase 2)']
correct_option: <div class="correct-answer"> The correct answer is: <span class="option-value">490</span> </div>
source_db: MarksBatch1_P2.db
title:
beginarraycccccccc-hline-multirow2-year-multicolumn3c-male-multicolumn2c-female-multirow2-total-cline-2-7-urban-rural-total-urban-rural-total-hline-19-5

slug:
beginarraycccccccc-hline-multirow2-year-multicolumn3c-male-multicolumn2c-female-multirow2-total-cline-2-7-urban-rural-total-urban-rural-total-hline-19-5-48267

question:
<div class="question">\begin{array}{|c|c|c|c|c|c|c|c|}<br/>\hline \multirow{2}{*} { Year } &amp; \multicolumn{3}{|c|} { Male } &amp; \multicolumn{2}{|c|} { Female } &amp; \multirow{2}{*} { Total } \\<br/>\cline { 2 - 7 } &amp; &amp; Urban &amp; Rural &amp; Total &amp; Urban &amp; Rural &amp; Total &amp; \\<br/>\hline 1995 &amp; 280 &amp; 350 &amp; &amp; &amp; 310 &amp; &amp; 1350 \\<br/>\hline 1996 &amp; 370 &amp; &amp; 670 &amp; 180 &amp; &amp; 450 &amp; \\<br/>\hline 1997 &amp; &amp; 130 &amp; 440 &amp; &amp; 190 &amp; &amp; \\<br/>\hline 1998 &amp; 400 &amp; 280 &amp; &amp; 290 &amp; &amp; &amp; \\<br/>\hline Total &amp; &amp; &amp; &amp; 1060 &amp; 850 &amp; &amp; \\<br/>\hline<br/>\end{array}<br/>What is the urban population in the year 1997?</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">400</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">460</span> </li><li class="correct"> <span class="option-label">C</span> <span class="option-data">490</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">510</span> </li> </ul>

answer:
<div class="solution">Complete table is<br/>\begin{array}{|c|c|c|c|c|c|c|c|}<br/>\hline \multirow{2}{*} { Year } &amp; \multicolumn{3}{|c|} { Male } &amp; \multicolumn{3}{|c|} { Female } &amp; \multirow{2}{*} { Total } \\<br/>\cline { 2 - 8 } &amp; Urban &amp; Rural &amp; Total &amp; Urban &amp; Rural &amp; Total &amp; \\<br/>\hline 1995 &amp; 280 &amp; 350 &amp; 630 &amp; 410 &amp; 310 &amp; 720 &amp; 1350 \\<br/>\hline 1996 &amp; 370 &amp; 300 &amp; 670 &amp; 180 &amp; 270 &amp; 450 &amp; 1120 \\<br/>\hline 1997 &amp; 310 &amp; 130 &amp; 440 &amp; 180 &amp; 190 &amp; 370 &amp; 810 \\<br/>\hline 1998 &amp; 400 &amp; 280 &amp; 680 &amp; 290 &amp; 80 &amp; 370 &amp; 1050 \\<br/>\hline Total &amp; 1360 &amp; 1060 &amp; 2420 &amp; 1060 &amp; 850 &amp; 1910 &amp; 4330 \\<br/>\hline<br/>\end{array}<br/>Urban population in the yean $1997=310+180=490 .$</div>


tags: ['Mathematics', 'Statistics', 'NDA', 'NDA 2011 (Phase 2)']
source_db: MarksBatch1_P2.db
title:
beginarraycccccccc-hline-multirow2-year-multicolumn3c-male-multicolumn2c-female-multirow2-total-cline-2-7-urban-rural-total-urban-rural-total-hline-19-6

slug:
beginarraycccccccc-hline-multirow2-year-multicolumn3c-male-multicolumn2c-female-multirow2-total-cline-2-7-urban-rural-total-urban-rural-total-hline-19-6-18839

question:
<div class="question">\begin{array}{|c|c|c|c|c|c|c|c|}<br/>\hline \multirow{2}{*} { Year } &amp; \multicolumn{3}{|c|} { Male } &amp; \multicolumn{2}{|c|} { Female } &amp; \multirow{2}{*} { Total } \\<br/>\cline { 2 - 7 } &amp; &amp; Urban &amp; Rural &amp; Total &amp; Urban &amp; Rural &amp; Total &amp; \\<br/>\hline 1995 &amp; 280 &amp; 350 &amp; &amp; &amp; 310 &amp; &amp; 1350 \\<br/>\hline 1996 &amp; 370 &amp; &amp; 670 &amp; 180 &amp; &amp; 450 &amp; \\<br/>\hline 1997 &amp; &amp; 130 &amp; 440 &amp; &amp; 190 &amp; &amp; \\<br/>\hline 1998 &amp; 400 &amp; 280 &amp; &amp; 290 &amp; &amp; &amp; \\<br/>\hline Total &amp; &amp; &amp; &amp; 1060 &amp; 850 &amp; &amp; \\<br/>\hline<br/>\end{array}<br/>What is the percentage of rural male population (over the whole population) in the year $1998 ?$</div>

options:
<ul class="options"> <li class="correct"> <span class="option-label">A</span> <span class="option-data">$\frac{80}{3} \%$</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">B</span> <span class="option-data">$\frac{100}{3} \%$</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">$35 \%$</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">$40 \%$</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">$\frac{80}{3} \%$</span> </div>

answer:
<div class="solution">Complete table is<br/>\begin{array}{|c|c|c|c|c|c|c|c|}<br/>\hline \multirow{2}{*} { Year } &amp; \multicolumn{3}{|c|} { Male } &amp; \multicolumn{3}{|c|} { Female } &amp; \multirow{2}{*} { Total } \\<br/>\cline { 2 - 8 } &amp; Urban &amp; Rural &amp; Total &amp; Urban &amp; Rural &amp; Total &amp; \\<br/>\hline 1995 &amp; 280 &amp; 350 &amp; 630 &amp; 410 &amp; 310 &amp; 720 &amp; 1350 \\<br/>\hline 1996 &amp; 370 &amp; 300 &amp; 670 &amp; 180 &amp; 270 &amp; 450 &amp; 1120 \\<br/>\hline 1997 &amp; 310 &amp; 130 &amp; 440 &amp; 180 &amp; 190 &amp; 370 &amp; 810 \\<br/>\hline 1998 &amp; 400 &amp; 280 &amp; 680 &amp; 290 &amp; 80 &amp; 370 &amp; 1050 \\<br/>\hline Total &amp; 1360 &amp; 1060 &amp; 2420 &amp; 1060 &amp; 850 &amp; 1910 &amp; 4330 \\<br/>\hline<br/>\end{array}<br/>Total rural male population in the year $1998=280$ Required $\%=\frac{280}{1050} \times 100 \%=\frac{28}{105} \times 100 \%$<br/>$=\frac{28 \times 20}{21} \%=\frac{4 \times 20}{3} \%=\frac{80}{3} \%$</div>


tags: ['Mathematics', 'Statistics', 'NDA', 'NDA 2011 (Phase 2)']
correct_option: <div class="correct-answer"> The correct answer is: <span class="option-value">1995</span> </div>
source_db: MarksBatch1_P2.db
title:
beginarraycccccccc-hline-multirow2-year-multicolumn3c-male-multicolumn2c-female-multirow2-total-cline-2-7-urban-rural-total-urban-rural-total-hline-19-7

slug:
beginarraycccccccc-hline-multirow2-year-multicolumn3c-male-multicolumn2c-female-multirow2-total-cline-2-7-urban-rural-total-urban-rural-total-hline-19-7-74693

question:
<div class="question">\begin{array}{|c|c|c|c|c|c|c|c|}<br/>\hline \multirow{2}{*} { Year } &amp; \multicolumn{3}{|c|} { Male } &amp; \multicolumn{2}{|c|} { Female } &amp; \multirow{2}{*} { Total } \\<br/>\cline { 2 - 7 } &amp; &amp; Urban &amp; Rural &amp; Total &amp; Urban &amp; Rural &amp; Total &amp; \\<br/>\hline 1995 &amp; 280 &amp; 350 &amp; &amp; &amp; 310 &amp; &amp; 1350 \\<br/>\hline 1996 &amp; 370 &amp; &amp; 670 &amp; 180 &amp; &amp; 450 &amp; \\<br/>\hline 1997 &amp; &amp; 130 &amp; 440 &amp; &amp; 190 &amp; &amp; \\<br/>\hline 1998 &amp; 400 &amp; 280 &amp; &amp; 290 &amp; &amp; &amp; \\<br/>\hline Total &amp; &amp; &amp; &amp; 1060 &amp; 850 &amp; &amp; \\<br/>\hline<br/>\end{array}<br/>In which year is the female population maximum?</div>

options:
<ul class="options"> <li class="correct"> <span class="option-label">A</span> <span class="option-data">1995</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">1996</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">1997</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">1998</span> </li> </ul>

answer:
<div class="solution">Complete table is<br/>\begin{array}{|c|c|c|c|c|c|c|c|}<br/>\hline \multirow{2}{*} { Year } &amp; \multicolumn{3}{|c|} { Male } &amp; \multicolumn{3}{|c|} { Female } &amp; \multirow{2}{*} { Total } \\<br/>\cline { 2 - 8 } &amp; Urban &amp; Rural &amp; Total &amp; Urban &amp; Rural &amp; Total &amp; \\<br/>\hline 1995 &amp; 280 &amp; 350 &amp; 630 &amp; 410 &amp; 310 &amp; 720 &amp; 1350 \\<br/>\hline 1996 &amp; 370 &amp; 300 &amp; 670 &amp; 180 &amp; 270 &amp; 450 &amp; 1120 \\<br/>\hline 1997 &amp; 310 &amp; 130 &amp; 440 &amp; 180 &amp; 190 &amp; 370 &amp; 810 \\<br/>\hline 1998 &amp; 400 &amp; 280 &amp; 680 &amp; 290 &amp; 80 &amp; 370 &amp; 1050 \\<br/>\hline Total &amp; 1360 &amp; 1060 &amp; 2420 &amp; 1060 &amp; 850 &amp; 1910 &amp; 4330 \\<br/>\hline<br/>\end{array}<br/>In 1995 , the female population is maximum.</div>


tags: ['Mathematics', 'Statistics', 'NDA', 'NDA 2011 (Phase 2)']
correct_option: <div class="correct-answer"> The correct answer is: <span class="option-value">1050</span> </div>
source_db: MarksBatch1_P2.db
title:
beginarraycccccccc-hline-multirow2-year-multicolumn3c-male-multicolumn2c-female-multirow2-total-cline-2-7-urban-rural-total-urban-rural-total-hline-19

slug:
beginarraycccccccc-hline-multirow2-year-multicolumn3c-male-multicolumn2c-female-multirow2-total-cline-2-7-urban-rural-total-urban-rural-total-hline-19-89081

question:
<div class="question">\begin{array}{|c|c|c|c|c|c|c|c|}<br/>\hline \multirow{2}{*} { Year } &amp; \multicolumn{3}{|c|} { Male } &amp; \multicolumn{2}{|c|} { Female } &amp; \multirow{2}{*} { Total } \\<br/>\cline { 2 - 7 } &amp; &amp; Urban &amp; Rural &amp; Total &amp; Urban &amp; Rural &amp; Total &amp; \\<br/>\hline 1995 &amp; 280 &amp; 350 &amp; &amp; &amp; 310 &amp; &amp; 1350 \\<br/>\hline 1996 &amp; 370 &amp; &amp; 670 &amp; 180 &amp; &amp; 450 &amp; \\<br/>\hline 1997 &amp; &amp; 130 &amp; 440 &amp; &amp; 190 &amp; &amp; \\<br/>\hline 1998 &amp; 400 &amp; 280 &amp; &amp; 290 &amp; &amp; &amp; \\<br/>\hline Total &amp; &amp; &amp; &amp; 1060 &amp; 850 &amp; &amp; \\<br/>\hline<br/>\end{array}<br/>What is the total population in the year $1998 ? \quad$</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">1000</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">1020</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">1040</span> </li><li class="correct"> <span class="option-label">D</span> <span class="option-data">1050</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">Complete table is<br/>\begin{array}{|c|c|c|c|c|c|c|c|}<br/>\hline \multirow{2}{*} { Year } &amp; \multicolumn{3}{|c|} { Male } &amp; \multicolumn{3}{|c|} { Female } &amp; \multirow{2}{*} { Total } \\<br/>\cline { 2 - 8 } &amp; Urban &amp; Rural &amp; Total &amp; Urban &amp; Rural &amp; Total &amp; \\<br/>\hline 1995 &amp; 280 &amp; 350 &amp; 630 &amp; 410 &amp; 310 &amp; 720 &amp; 1350 \\<br/>\hline 1996 &amp; 370 &amp; 300 &amp; 670 &amp; 180 &amp; 270 &amp; 450 &amp; 1120 \\<br/>\hline 1997 &amp; 310 &amp; 130 &amp; 440 &amp; 180 &amp; 190 &amp; 370 &amp; 810 \\<br/>\hline 1998 &amp; 400 &amp; 280 &amp; 680 &amp; 290 &amp; 80 &amp; 370 &amp; 1050 \\<br/>\hline Total &amp; 1360 &amp; 1060 &amp; 2420 &amp; 1060 &amp; 850 &amp; 1910 &amp; 4330 \\<br/>\hline<br/>\end{array}<br/>Total population in the year $1998=1050$.</div>


tags: ['Chemistry', 'Electrochemistry', 'KCET', 'KCET 2014']
source_db: MarksBatch1_P2.db
title:
beginarrayl-m-n-o2h-c-ldelta-agf2text-excess-bg-bluscdots-cgdg-endarray-the-gases-a-b-c-and-d-are-respectively

slug:
beginarrayl-m-n-o2h-c-ldelta-agf2text-excess-bg-bluscdots-cgdg-endarray-the-gases-a-b-c-and-d-are-respectively-40869

question:
<div class="question">\[<br/>\begin{array}{l}<br/>M n O_{2}+H C l-\Delta \\<br/>A_{(g)}+F_{2}(\text { excess })_{--}&gt;-&gt;B_{(g)} \\<br/>B_{(l)}+U_{(s)}-\cdots C_{(g)}+D_{(g)}<br/>\end{array}<br/>\]<br/>The gases \( A, B, C \) and \( D \) are respectively</div>

options:
<ul class="options"> <li class="correct"> <span class="option-label">A</span> <span class="option-data">\( \mathrm{Cl}_{2}, \mathrm{ClF}_{3}, \mathrm{UF}_{6}, \mathrm{ClF} \)</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">\( \mathrm{O}_{2}, \mathrm{O}_{2} \mathrm{~F}_{2}, \mathrm{U}_{2} \mathrm{O}_{3}, \mathrm{OF}_{2} \)</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">\( \mathrm{Cl}_{2}, \mathrm{ClF}, U \mathrm{~F}_{6}, \mathrm{ClF}_{3} \)</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">\( \mathrm{O}_{2}, \mathrm{OF}_{2}, \mathrm{U}_{2} \mathrm{O}_{3}, \mathrm{O}_{2} \mathrm{~F}_{2} \)</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">\( \mathrm{Cl}_{2}, \mathrm{ClF}_{3}, \mathrm{UF}_{6}, \mathrm{ClF} \)</span> </div>

answer:
<div class="solution">\( \mathrm{MnO}_{2}+4 \mathrm{HCl}_{-}&gt;\underset{(A)}{\Delta} \mathrm{Cl}_{2}(g)+\mathrm{MnCl}_{2}+2 \mathrm{H}_{2} \mathrm{O} \)<br/>\( \mathrm{Cl}_{2}(g)+3 \mathrm{~F}_{2} \) (excess) \( \quad{ }_{573 \mathrm{~K}}^{(A)} \rightarrow 2 \mathrm{ClF}_{3}(g) \)<br/><img src="https://cdn-question-pool.getmarks.app/pyq/kcet/sol_55.png"/></div>


tags: ['Biology', 'Anatomy of Flowering Plants']
options: None
correct_option: None
source_db: MarksBatch1_P2.db
title:
below-is-a-list-of-plant-fibres-from-which-part-of-the-plant-these-are-obtained-a-coir-b-hemp-c-cotton-d-jute

slug:
below-is-a-list-of-plant-fibres-from-which-part-of-the-plant-these-are-obtained-a-coir-b-hemp-c-cotton-d-jute-20691

question:
<div class="question">Below is a list of plant fibres. From which part of the plant these are obtained.<br/>(a) Coir<br/>(b) Hemp<br/>(c) Cotton<br/>(d) Jute</div>

answer:
<div class="solution">(a) Coir is a natural fibre obtained from coconut husk. It is the fibrous mesoderm of the fruit of Cocos nucifera (coconut).<br/>(b) Hemp fibre is obtained from the stems of Cannabis sativa. It is the bast fibre (soft or stem fibre) obtained from secondary phloem.<br/>(c) Cotton fibre is the epidermal growth in cotton (Gossypium hirsutum) seed. It is an elongated structure made up of cellulose.<br/>(d) Jute is a natural bast fibre made up of cellulose and lignin obtained from Corchorus capsularis.</div>


title: benzene-reacts-with-n-propyl-chloride-in-the-presence-of-anhydrous-alcl-3-to-give-predominantly
tags: ['Chemistry', 'Hydrocarbons', 'TS EAMCET', 'TS EAMCET 2021 (05 Aug Shift 1)']
source_db: MarksBatch1_P2.db
slug:
benzene-reacts-with-n-propyl-chloride-in-the-presence-of-anhydrous-alcl-3-to-give-predominantly-43125

question:
<div class="question">Benzene reacts with <math xmlns="http://www.w3.org/1998/Math/MathML"><mi mathvariant="normal">n</mi></math>-propyl chloride in the presence of anhydrous <math xmlns="http://www.w3.org/1998/Math/MathML"><msub><mi>AlCl</mi><mn>3</mn></msub></math> to give predominantly</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data"><math xmlns="http://www.w3.org/1998/Math/MathML"><mi mathvariant="normal">n</mi></math>-Propyl benzene</span> </li><li class="correct"> <span class="option-label">B</span> <span class="option-data">Isopropyl benzene</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li><li class=""> <span class="option-label">C</span> <span class="option-data">3-Propyl-1-chloro benzene</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">1-Chloro-3-n-propyl benzene</span> </li> </ul>

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

answer:
<div class="solution"><p style="text-align: justify;">This reaction is known as Friedel Craft's alkylation reaction. in presence of anhydrous <math xmlns="http://www.w3.org/1998/Math/MathML"><msub><mi>AlCl</mi><mn>3</mn></msub></math>, n-propyl chloride introduce an alkylating agent. It is an electrophilic substitution reaction. </p><p style="text-align: justify;">Reaction occurs in following step.</p><p>Generation of electrophile.</p><p><math xmlns="http://www.w3.org/1998/Math/MathML"><msub><mi>CH</mi><mn>3</mn></msub><msub><mi>CH</mi><mn>2</mn></msub><msub><mi>CH</mi><mn>2</mn></msub><mi>Cl</mi><mo>+</mo><msub><mi>AlCl</mi><mn>3</mn></msub><mo>→</mo><msub><mi>CH</mi><mn>3</mn></msub><msub><mi>CH</mi><mn>2</mn></msub><msup><msub><mi>CH</mi><mn>2</mn></msub><mo>+</mo></msup><mo>+</mo><msup><msub><mi>AlCl</mi><mn>4</mn></msub><mo>-</mo></msup></math></p><p>Carbocation formed in step 1 rearranges to form secondary carbocation.</p><p><math xmlns="http://www.w3.org/1998/Math/MathML"><msub><mi>CH</mi><mn>3</mn></msub><msub><mi>CH</mi><mn>2</mn></msub><msup><msub><mi>CH</mi><mn>2</mn></msub><mo>+</mo></msup><mo>↔</mo><mo> </mo><msub><mi>CH</mi><mn>3</mn></msub><mover><mi>CH</mi><mo>+</mo></mover><msub><mi>CH</mi><mn>3</mn></msub><mspace linebreak="newline"></mspace><mo> </mo><mo> </mo><mo> </mo><mo> </mo><mo> </mo><mo> </mo><mn>1</mn><mo>°</mo><mo> </mo><mo> </mo><mo> </mo><mo> </mo><mo> </mo><mo> </mo><mo> </mo><mo> </mo><mo> </mo><mo> </mo><mo> </mo><mo> </mo><mo> </mo><mo> </mo><mo> </mo><mo> </mo><mo> </mo><mo> </mo><mo> </mo><mo> </mo><mn>2</mn><mo>°</mo></math></p><p>This secondary carbocation attack on benzene ring.</p><p><img src="https://cdn-question-pool.getmarks.app/pyq/ts_eamcet/60290244-f332-457c-a922-16b9262073ab-image.png" style="width: 300px; height: 123px;"/></p><p>Next step is the abstraction of proton from conjugate base</p><p><img src="https://cdn-question-pool.getmarks.app/pyq/ts_eamcet/8d6831be-edba-4b93-b41b-fbff2bacbee8-image.png" style="width: 300px; height: 122px;"/></p><p>Hence, the product is isopropyl benzene.</p><p> </p><p> </p><p> </p></div>


title: benzenesulfonyl-chloride-hinsbergs-reagent-reacts-with-which-type-of-amines-to-form-sulphonamides
tags: ['Chemistry', 'Amines', 'NEET']
source_db: MarksBatch1_P2.db
slug:
benzenesulfonyl-chloride-hinsbergs-reagent-reacts-with-which-type-of-amines-to-form-sulphonamides-15435

question:
<div class="question">Benzenesulfonyl chloride (Hinsberg's reagent) reacts with which type of amines to form sulphonamides?</div>

options:
<ul class="options"> <li class="correct"> <span class="option-label">A</span> <span class="option-data">Primary and secondary 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">Primary amines only</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">Secondary amines only</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">Tertiary amines only</span> </li> </ul>

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

answer:
<div class="solution">Benzenesulfonyl chloride reacts with both primary and secondary amines to form sulphonamides.</div>


title: besides-annelida-and-arthropoda-true-metamerism-is-found-in
slug: besides-annelida-and-arthropoda-true-metamerism-is-found-in-16791
question: <div class="question"><p>Besides Annelida and Arthropoda, true metamerism is found in</p> </div>
tags: ['Biology', 'Animal Kingdom', 'NEET']
source_db: MarksBatch1_P2.db
options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">Ctenophora</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">Mollusca</span> </li><li class="correct"> <span class="option-label">C</span> <span class="option-data">Chordata</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">Porifera</span> </li> </ul>

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

answer:
<div class="solution">True segmentation metamerism is found in Chordata, Annelida and Arthropoda. Metamerism is the phenomenon of having a linear series of body segments fundamentally similar in structure, though not all such structures are entirely alike in any single life form because some of them perform special functions. In animals, metameric segments are referred to as somites or metameres.</div>


tags: ['Physics', 'Ray Optics']
source_db: MarksBatch1_P2.db
title:
between-the-primary-and-secondary-rainbows-there-is-a-dark-band-known-as-alexandars-dark-band-this-is-because

slug:
between-the-primary-and-secondary-rainbows-there-is-a-dark-band-known-as-alexandars-dark-band-this-is-because-58433

question:
<div class="question">Between the primary and secondary rainbows, there is a dark band known as Alexandar's dark band. This is because</div>

options:
<ul class="options"> <li class="correct"> <span class="option-label">A</span> <span class="option-data"><br/>light scattered into this region interfere destructively<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/>there is no light scattered into this region<br/></span> </li><li class=""> <span class="option-label">C</span> <span class="option-data"><br/>light is absorbed in this region<br/></span> </li><li class="correct"> <span class="option-label">D</span> <span class="option-data"><br/>angle made at the eye by the scattered rays with respect to the incident light of the sun lies between approximately $42^{\circ}$ and $50^{\circ}$</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 answers are:
<span class="option-value"><br/>light scattered into this region interfere destructively<br/>, <br/>angle made at the eye by the scattered rays with respect to the incident light of the sun lies between approximately $42^{\circ}$ and $50^{\circ}$</span> </div>

answer:
<div class="solution">Between the primary and secondary rainbows, there is a dark band known as Alexandar's dark, this forms due to light scattered into this region interfere destructively. Since, primary and secondary rainbows subtends an angle nearly $41^{\circ}$ to $42^{\circ}$ and $51^{\circ}$ to $54^{\circ}$ respectively at observer's eye w.r.t. incident light ray. Then, the scattered rays with respect to the incident ray of the sun lies between approximately $42^{\circ}$ and $50^{\circ}$.</div>


title: bilateral-symmetry-metameric-segmentation-coelom-and-open-circulatory-system-are-the-features-of
tags: ['Biology', 'Animal Kingdom', 'JIPMER', 'JIPMER 2012']
source_db: MarksBatch1_P2.db
slug:
bilateral-symmetry-metameric-segmentation-coelom-and-open-circulatory-system-are-the-features-of-14394

question:
<div class="question">Bilateral symmetry, metameric segmentation, coelom and open circulatory system are the features of</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">Annelida</span> </li><li class="correct"> <span class="option-label">B</span> <span class="option-data">Arthropoda</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">Mollusca</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">Echinodermata</span> </li> </ul>

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

answer:
<div class="solution">The members of phylum-Arthropoda show bilateral symmetry, three germ layers in body wall, external metamerism, jointed and paired appendages, haemocoel and open type of circulatory system with dorsal heart.</div>


tags: ['Biology', 'Animal Kingdom', 'NEET']
source_db: MarksBatch1_P2.db
title:
bilateral-symmetry-metameric-segmentation-coelom-and-open-circulatory-system-characterizes-which-of-the-following-phylum

slug:
bilateral-symmetry-metameric-segmentation-coelom-and-open-circulatory-system-characterizes-which-of-the-following-phylum-91005

question:
<div class="question"><p>Bilateral symmetry, metameric segmentation, coelom and open circulatory system characterizes which of the following phylum?</p> </div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">Annelida</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">Mollusca</span> </li><li class="correct"> <span class="option-label">C</span> <span class="option-data">Arthropoda</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">Echinodermata</span> </li> </ul>

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

answer:
<div class="solution">The phylum Arthropoda is the largest and most varied in the animal kingdom. It includes insects, arachnids, myriapods and crustaceans. They have bilateral symmetry as their body can be divided vertically into two mirror images. They have metameric segmentation in which body organs and appendages were serially repeated in each segment. They are eucoelomate with an open circulatory system.</div>


title: biodiversity-of-a-geographical-region-represents-1
slug: biodiversity-of-a-geographical-region-represents-1-26422
question: <div class="question">Biodiversity of a geographical region represents</div>
tags: ['Biology', 'Biodiversity and its Conservation', 'NEET']
source_db: MarksBatch1_P2.db
options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">endangered species found in the region.</span> </li><li class="correct"> <span class="option-label">B</span> <span class="option-data">the diversity in the organisms living in the region.</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">genetic diversity in the dominant species of the region.</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">species endemic to the region.</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">the diversity in the organisms living in the region.</span> </div>

answer:
<div class="solution">Biodiversity (biological diversity) is the existence of a wide variety of species (species diversity) or other taxa of plants, animals and microorganisms in a natural community or habitat, or of communities within a particular environment (ecological diversity), or of genetic variation within a species (genetic diversity).</div>


title: biodiversity-of-a-geographical-region-represents-2
slug: biodiversity-of-a-geographical-region-represents-2-53965
question: <div class="question">Biodiversity of a geographical region represents</div>
tags: ['Biology', 'Biodiversity and its Conservation', 'NEET', 'NEET 2011 (Mains)']
source_db: MarksBatch1_P2.db
options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">endangered species found in the region</span> </li><li class="correct"> <span class="option-label">B</span> <span class="option-data">the diversity in the organism living in the region</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">genetic diversity present in the dominant species of the region</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">species endemic to the region</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">the diversity in the organism living in the region</span> </div>

answer:
<div class="solution">Biodiversity is the term popularised by the sociobiologist Edward Wilson to describe the combined diversity at all the levels of biological organisation. The most important of them are genetic diversity, species diversity and ecological diversity.</div>


title: biodiversity-of-a-geographical-region-represents
slug: biodiversity-of-a-geographical-region-represents-78139
question: <div class="question">Biodiversity of a geographical region represents</div>
tags: ['Biology', 'Biodiversity and its Conservation', 'NEET']
source_db: MarksBatch1_P2.db
options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">Endangered species found in the region.</span> </li><li class="correct"> <span class="option-label">B</span> <span class="option-data">The diversity in the organisms living in the region.</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">Genetic diversity present in the dominant species of the region.</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">Species endemic to the region.</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">The diversity in the organisms living in the region.</span> </div>

answer:
<div class="solution">Biodiversity is the number of variety of organism found within a specified geographical region. In our biosphere, immense diversity (or heterogeneity) exists not only at the species level but at all levels of biological organisation ranging from macromolecules within cells to biomes. </div>


tags: ['Biology', 'Organisms and Populations', 'NEET']
source_db: MarksBatch1_P2.db
title:
biomass-available-for-consumers-and-the-rate-of-formation-of-new-organic-matter-by-consumers-are-respectively

slug:
biomass-available-for-consumers-and-the-rate-of-formation-of-new-organic-matter-by-consumers-are-respectively-62290

question:
<div class="question">Biomass available for consumers and the rate of formation of new organic matter by consumers are respectively:</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">Gross primary productivity and net primary productivity</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">Net primary productivity and gross primary productivity</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">Gross primary productivity and secondary productivity</span> </li><li class="correct"> <span class="option-label">D</span> <span class="option-data">Net primary productivity and secondary productivity</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">Net primary productivity and secondary productivity</span> </div>

answer:
<div class="solution">Total biomass produced by producers is called gross primary productivity (GPP). In producers, some energy or biomass is utilized in respiration and other metabolic processes, so available biomass to next trophic level i.e. primary consumers are called net primary productivity (NPP). In these consumers, some amount of biomass is utilized in respiration and other metabolic processes and the remaining amount is assimilated in tissues, which is called as secondary productivity.</div>


tags: ['Biology', 'Organisms and Populations', 'NEET']
source_db: MarksBatch1_P2.db
title:
biome-distribution-with-respect-to-annual-temperature-and-precipitation-is-given-below-identify-grassland-and-coniferous-forest-by-selecting-the-corre

slug:
biome-distribution-with-respect-to-annual-temperature-and-precipitation-is-given-below-identify-grassland-and-coniferous-forest-by-selecting-the-corre-94577

question:
<div class="question">Biome distribution with respect to annual temperature and precipitation is given below. Identify grassland and coniferous forest by selecting the CORRECT option:<br/> <br/> <img alt="" src="https://cdn-question-pool.getmarks.app/nta_abhyas/neet/images/8_que-buod.JPG" style="max-width:100%; object-fit:contain"/></div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">A and B</span> </li><li class="correct"> <span class="option-label">B</span> <span class="option-data">B and E</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">B and D</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">C and D</span> </li> </ul>

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

answer:
<div class="solution">Ecology is the study of interactions between biotic and abiotic factors in a given environment and is concerned with basically four levels of biological organization - organisms, populations, community and biomes. Biome is a community of fauna having similar features for the environment they live in.<br/><br/>Vegetation that is dominated by the continuous cover of grasses is said to be grasslands. The region is covered by small shrubs and herbs rather than tall plants. The mean annual temperature and precipitation in this region is about <math><msup><mrow><mn>0</mn></mrow><mrow><mi mathvariant="normal">o</mi></mrow></msup><mi mathvariant="normal">C</mi><mi mathvariant="normal"> </mi><mi mathvariant="normal">t</mi><mi mathvariant="normal">o</mi><mi mathvariant="normal"> </mi><msup><mrow><mn>25</mn></mrow><mrow><mi mathvariant="normal">o</mi></mrow></msup><mi mathvariant="normal">C</mi></math> and approximately <math><mn>25</mn><mo>-</mo><mn>100</mn><mi mathvariant="normal"> </mi><mi mathvariant="normal">c</mi><mi mathvariant="normal">m</mi></math>.<br/><br/>Forest region having an abundance of cone-bearing needle leaf evergreen trees with long winter and moderate to high precipitation is considered under coniferous forest. They are found in the region above the tropical region. The mean annual temperature is around <math><mo>-</mo><msup><mrow><mn>1</mn></mrow><mrow><mi mathvariant="normal">o</mi></mrow></msup><mi mathvariant="normal">C</mi><mi mathvariant="normal"> </mi><mi mathvariant="normal">t</mi><mi mathvariant="normal">o</mi><mi mathvariant="normal"> </mi><msup><mrow><mn>13</mn></mrow><mrow><mi mathvariant="normal">o</mi></mrow></msup><mi mathvariant="normal">C</mi></math> and mean annual precipitation is approximately <math><mn>50</mn><mo>-</mo><mn>250</mn><mi mathvariant="normal"> </mi><mi mathvariant="normal">c</mi><mi mathvariant="normal">m</mi></math>.<br/><br/>Below image describes the requirement of MAP and MAT of different forest types.<br/><br/><img alt="" src="https://cdn-question-pool.getmarks.app/nta_abhyas/neet/images/9_que_bida.JPG" style="max-width:100%; object-fit:contain"/></div>


title: blue-colour-of-the-sky-is-due-to
slug: blue-colour-of-the-sky-is-due-to-53034
question: <div class="question">Blue colour of the sky is due to</div>
tags: ['Physics', 'Ray Optics', 'AP EAMCET', 'AP EAMCET 2023 (15 May Shift 1)']
source_db: MarksBatch1_P2.db
options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">reflection of light</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">refraction of light</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">diffraction of light</span> </li><li class="correct"> <span class="option-label">D</span> <span class="option-data">scattering of light</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">scattering of light</span> </div>

answer:
<div class="solution">Blue colour of the sky is due to scattering of light. Scattering $\propto \frac{1}{\lambda^4}$ and $\lambda$ is least for blue colour among the fundamental colour red, green and blue. So blue colour of light scattered the most. Therefore sky appear blue.</div>


title: both-ethanal-and-propanone-will-react-with-which-of-the-following
slug: both-ethanal-and-propanone-will-react-with-which-of-the-following-31434
question: <div class="question">Both ethanal and propanone will react with which of the following?</div>
tags: ['Chemistry', 'Aldehydes and Ketones', 'AP EAMCET', 'AP EAMCET 2020 (22 Sep Shift 2)']
source_db: MarksBatch1_P2.db
options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">Tollen reagent</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">Schiff reagent</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">Fehling reagent</span> </li><li class="correct"> <span class="option-label">D</span> <span class="option-data">Grignard reagent</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">Grignard reagent</span> </div>

answer:
<div class="solution">Acetaldehyde and acetone both react with a Grignard reagent to give secondary and tertiary alcohols respectively.<br/>While Fehling's reagent, Tollen's reagent and Schiff's reagent are reduced by only aldehydes (i.e., acetaldehyde). Hence, the correct option is (4).<br/><img src="https://cdn-question-pool.getmarks.app/pyq/ap_eamcet/GQduYxotmejjSskXyEsZOi4UZB5kTfB-l_rzwBGEqss.original.fullsize.png"/><br/></div>


title: br-will-abstract-which-of-the-hydrogen-most-readily
slug: br-will-abstract-which-of-the-hydrogen-most-readily-99744
tags: ['Chemistry', 'General Organic Chemistry', 'BITSAT', 'BITSAT 2020']
correct_option: <div class="correct-answer"> The correct answer is: <span class="option-value">a</span> </div>
source_db: MarksBatch1_P2.db
question:
<div class="question"><img src="https://cdn-question-pool.getmarks.app/pyq/bitsat/sweYDLJwR5isJiXV6OOnbBE_po2OPIfDcYhNF0V63X8.original.fullsize.png"/><br/> <br/> <br/>$\mathrm{Br}^{\huge\cdot}$ will abstract which of the hydrogen most readily?</div>

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

answer:
<div class="solution">Bromine is more selective
<br/> <br/>$\therefore$ abstract that hydrogen which forms stable free- radical
<br/> <br/>$\therefore$ <img src="https://cdn-question-pool.getmarks.app/pyq/bitsat/7ZLnC1gNopnDAOlftcP25DdgUrrGPt87Gca5yXTfSOY.original.fullsize.png"/></div>


title: briefly-describe-the-cell-theory
slug: briefly-describe-the-cell-theory-23155
question: <div class="question">Briefly describe the cell theory.</div>
tags: ['Biology', 'Cell - The Unit of Life']
options: None
correct_option: None
source_db: MarksBatch1_P2.db
answer:
<div class="solution">Schleiden and Schwann formulated the cell theory, in 1938-39 which stated<br/>(i) All living beings are made up of cells and products formed by the cells.<br/>(ii) Cells are the structural and functional units of life<br/>The cell theory stated by Schleiden and Schwann failed to explain the question of origin of cells. A major expansion of the cell theory was expressed by Virchow in his statment 'Omnis cellula e cellula' (all cells arise from pre-existing cells) in 1855. This concept, was the actual idea of Nagelli (1846), which later on was elaborated by Virchow, along with considerable evidences in its support. The work of Nagelli and Virchow established cell division as the central pehnomenon in the continuity of life.<br/>The modern cell theory is thus based on two facts<br/>(i) All living organisms are composed of cells and products of cells.<br/>(ii) Cells are the basic structural and functional units of life.<br/>(iii) All cells arise from pre-existing cells.<br/>Viruses are exception to cell theory as they are not composed of cell. They consist of a nucleic acid (DNA or RNA) surrounded by a protein sheet and are incapable of independant existence, self regulation and self reproduction.</div>


tags: ['Biology', 'Body Fluids and Circulation']
options: None
correct_option: None
source_db: MarksBatch1_P2.db
title:
briefly-describe-the-followings-a-anaemia-b-angina-pectoris-c-atherosclerosis-d-hypertension-e-heart-failure-f-erythroblastosis-foetalis

slug:
briefly-describe-the-followings-a-anaemia-b-angina-pectoris-c-atherosclerosis-d-hypertension-e-heart-failure-f-erythroblastosis-foetalis-34128

question:
<div class="question">Briefly describe the followings<br/>(a) anaemia<br/>(b) angina pectoris<br/>(c) atherosclerosis<br/>(d) hypertension<br/>(e) heart failure<br/>(f) erythroblastosis foetalis</div>

answer:
<div class="solution">(a) Anaemia This is the most common disorder of the blood, which is caused due to decrease in the number of RBC than the normal amount and also due to less quantity of haemoglobin than the normal value in blood. This is the most common disorder of the blood.<br/>(b) Angina Pectoris When there is blockage in coronary artery, thus insufficient supply of blood reaches to heart muscles. That results in chest pain, fear, anxiety, pale skin, profuse sweating and vomiting. The pain usually starts in the centre of the chest spreads down to the left arm which last for only few second.<br/>(c) Atherosclerosis It refers the deposition of cholesterol or fatty substance in the inner lining of arteries called atherosclerotic plaque. Sometimes arteries get completely blocked, this may result in stroke of heart attack.<br/>(d) Hypertension It is sometimes also known as arterial hypertension. The blood pressure in the arteries gets elevated. It could be primary or secondary hypertension which are caused by various conditions which affect kidneys, arteries heart or endocrine system.<br/>(e) Heart Failure It is the state of heart, causes in when heart does not pump blood effectively enough to meet the requirement of the body.<br/>(f) Erythroblastosis foetalis It is a haemolytic disease causes in new borns, which is an allo-immune condition that develops in foetus, when igG molecules produced by mother pass through placenta and attack RBC. It causes reticulocytosis and anaemia. It develops due to $\mathrm{Rh}$ incompatibility between the couples.<br/>In a man with $\mathrm{RH}^{+}$blood and women with $\mathrm{Rh}^{-}$blood, the second pregnancy foetus may have this problem due to $\operatorname{lgG}$ accumulation in women during first child development and delivery.</div>


title: brown-haze-produced-in-photochemical-smog-is-due-to
slug: brown-haze-produced-in-photochemical-smog-is-due-to-52633
question: <div class="question">Brown haze produced in photochemical smog is due to: </div>
tags: ['Chemistry', 'Environmental Chemistry', 'NEET']
source_db: MarksBatch1_P2.db
options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data"><math><mi mathvariant="normal">N</mi><mi mathvariant="normal">O</mi></math></span> </li><li class="correct"> <span class="option-label">B</span> <span class="option-data"><math><mi mathvariant="normal">N</mi><msub><mrow><mi mathvariant="normal">O</mi></mrow><mrow><mn>2</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><li class=""> <span class="option-label">C</span> <span class="option-data"><math xmlns="http://www.w3.org/1998/Math/MathML"><msub><mtext>CH</mtext><mn>3</mn></msub><mtext>-</mtext><munder><mtext>C</mtext><mover><mtext>O</mtext><mo>||</mo></mover></munder><msub><mtext>OO-NO</mtext><mn>2</mn></msub></math></span> </li><li class=""> <span class="option-label">D</span> <span class="option-data"><math xmlns="http://www.w3.org/1998/Math/MathML"><mi mathvariant="normal">C</mi><msub><mi mathvariant="normal">H</mi><mn>2</mn></msub><mo>=</mo><mi mathvariant="normal">C</mi><mi mathvariant="normal">H</mi><mo>-</mo><mi mathvariant="normal">C</mi><mi mathvariant="normal">H</mi><mo>=</mo><mi mathvariant="normal">O</mi></math></span> </li> </ul>

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

answer:
<div class="solution">Photochemical smog is initiated by the photochemical dissociation of <math><mi mathvariant="normal">N</mi><msub><mrow><mi mathvariant="normal">O</mi></mrow><mrow><mn>2</mn></mrow></msub></math> and the resulting secondary reactions involving unsaturated hydrocarbons, other organic compounds and free radicals, leading to the formation of organic peroxides and ozone.<br/><br/><img alt="" src="https://cdn-question-pool.getmarks.app/nta_abhyas/neet/images/Environmental_che_2.jpg" style="max-width:100%; object-fit:contain"/><br/><br/>Hydrocarbons <math xmlns="http://www.w3.org/1998/Math/MathML"><mo>+</mo><msub><mi mathvariant="normal">O</mi><mn>3</mn></msub><mo>,</mo><mo> </mo><msub><mi mathvariant="normal">O</mi><mn>2</mn></msub><mo>,</mo><mo> </mo><mi mathvariant="normal">O</mi><mo>,</mo><msub><mi>NO</mi><mn>2</mn></msub><mo>,</mo><mo> </mo><mi>NO</mi></math>; peroxides, peroxyacetyl nitrate, formaldehyde, ozone aldehyde, acrolein, etc. oxidised hydrocarbons and ozone in the presence of humidity cause photochemical smog, which dissipates at night.</div>


title: brunners-glands-are
slug: brunners-glands-are-41119
question: <div class="question">Brunner's glands are</div>
tags: ['Biology', 'Digestion and Absorption', 'NEET']
source_db: MarksBatch1_P2.db
options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">present in the ileum and is a secondary lymphatic tissue storing lymphocytes.</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">present in the duodenum and is a secondary lymphatic tissue storing lymphocytes.</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">present in the ileum and secrete an alkaline mucous fluid.</span> </li><li class="correct"> <span class="option-label">D</span> <span class="option-data">present in the duodenum and secrete an alkaline mucous fluid.</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">present in the duodenum and secrete an alkaline mucous fluid.</span> </div>

answer:
<div class="solution">Brunner's glands are found in the submucosa of the duodenum and secrete an alkaline fluid, having mucin in it. These glands play an important function in protecting the duodenal epithelium from the acidic chyme of the stomach and its gastric juices, by coating it.</div>


title: by-convention-which-of-the-following-is-not-characteristic-for-having-zero-water-potential
slug: by-convention-which-of-the-following-is-not-characteristic-for-having-zero-water-potential-27833
tags: ['Biology', 'Transport in Plants', 'NEET']
source_db: MarksBatch1_P2.db
question:
<div class="question">By convention which of the following is not characteristic for having Zero water potential?</div>

options:
<ul class="options"> <li class="correct"> <span class="option-label">A</span> <span class="option-data">Atmospheric pressure is taken to be 1 atm</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">Water is not under any pressure</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">Water is at standard temperature</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">Pure water is taken</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">Atmospheric pressure is taken to be 1 atm</span> </div>

answer:
<div class="solution">By convention, the water potential of pure water at standard temperatures, which is not under any pressure, is taken to be zero.</div>


title: bybayes-theorem-which-one-of-the-following-probabilities-is-calculated
slug: bybayes-theorem-which-one-of-the-following-probabilities-is-calculated-46664
tags: ['Mathematics', 'Probability', 'NDA', 'NDA 2009 (Phase 1)']
answer: <div class="solution">By Baye's theorem, we know that, conditional probability is calculated.</div>
source_db: MarksBatch1_P2.db
question:
<div class="question">ByBaye's theorem, which one of the following probabilities is calculated?</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">Prior probability</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">Likelihood probability</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">Posterior probability</span> </li><li class="correct"> <span class="option-label">D</span> <span class="option-data">Conditional probability</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">Conditional probability</span> </div>


tags: ['Chemistry', 'Amines', 'JIPMER', 'JIPMER 2016']
source_db: MarksBatch1_P2.db
title:
c-3-h-9-n-reacts-with-hinsberg-reagent-and-the-product-is-insoluble-in-alkali-but-soluble-in-ether-this-nitrogen-containing-compound-is

slug:
c-3-h-9-n-reacts-with-hinsberg-reagent-and-the-product-is-insoluble-in-alkali-but-soluble-in-ether-this-nitrogen-containing-compound-is-20481

question:
<div class="question">$\mathrm{C}_3 \mathrm{H}_9 \mathrm{~N}$ reacts with Hinsberg reagent and the product is insoluble in alkali but soluble in ether. This nitrogen containing compound is</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">primary amine</span> </li><li class="correct"> <span class="option-label">B</span> <span class="option-data">secondary 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">C</span> <span class="option-data">tertiary amine</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">methyl isocyanide</span> </li> </ul>

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

answer:
<div class="solution">The compound with molecular formula $\mathrm{C}_3 \mathrm{H}_9 \mathrm{~N}$ is a secondary amine. When it reacts with Hinsberg reagent, the product obtained is soluble in ether.<br/><img src="https://cdn-question-pool.getmarks.app/pyq/jipmer/Yv-wu3i1zEbBpeRR455L8xVOk9xPnW9OqIAlXVoYmmU.original.fullsize.png"/><br/></div>


tags: ['Chemistry', 'Alcohols Phenols and Ethers', 'AP EAMCET', 'AP EAMCET 2014']
source_db: MarksBatch1_P2.db
title:
c-6-h-5-o-ch-2-ch-3-hi-y-z-i-d-e-n-t-i-f-y-y-an-d-z-in-the-above-reaction-beginarrayll-x-y-endarray-1

slug:
c-6-h-5-o-ch-2-ch-3-hi-y-z-i-d-e-n-t-i-f-y-y-an-d-z-in-the-above-reaction-beginarrayll-x-y-endarray-1-44012

question:
<div class="question">$$<br/>\mathrm{C}_6 \mathrm{H}_5-\mathrm{O}-\mathrm{CH}_2 \mathrm{CH}_3 \underset{\Delta}{\stackrel{\mathrm{HI}}{\longrightarrow}} Y+Z<br/>$$<br/>Identify $Y$ and $Z$ in the above reaction.<br/>\begin{array}{l|l}<br/>X &amp; Y<br/>\end{array}</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">\begin{array}{l|l}<br/>\mathrm{C}_6 \mathrm{H}_5 \mathrm{OH} &amp; \mathrm{H}_3 \mathrm{CCH}_3<br/>\end{array}</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">\begin{array}{l|l}<br/>\mathrm{C}_2 \mathrm{H}_5 \mathrm{I} &amp; \mathrm{C}_6 \mathrm{H}_5 \mathrm{CHO}<br/>\end{array}</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">\begin{array}{l|l}<br/>\mathrm{C}_6 \mathrm{H}_5 \mathrm{I} &amp; \mathrm{H}_3 \mathrm{CCH}_2 \mathrm{OH}<br/>\end{array}</span> </li><li class="correct"> <span class="option-label">D</span> <span class="option-data">$\mathrm{C}_6 \mathrm{H}_5 \mathrm{OH} \quad \mathrm{H}_3 \mathrm{CCH}_2$</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">$\mathrm{C}_6 \mathrm{H}_5 \mathrm{OH} \quad \mathrm{H}_3 \mathrm{CCH}_2$</span> </div>

answer:
<div class="solution">When an alkyl aryl ether is reacted with halogen acid $(H X)$, the products are always phenol and an alkyl halide.<br/>$$<br/>\begin{aligned}<br/>\mathrm{C}_6 \mathrm{H}_5-\mathrm{O}-\mathrm{CH}_2- &amp; \mathrm{CH}_3+\mathrm{HI} \stackrel{100 \mathrm{C}}{\longrightarrow} \\<br/>&amp; \mathrm{C}_6 \mathrm{H}_5 \mathrm{OH}+\mathrm{CH}_3-\mathrm{CH}_2-\mathrm{I}<br/>\end{aligned}<br/>$$</div>


title: c-6-h-5-o-ch-2-ch-3-hi-y-z-i-d-e-n-t-i-f-y-y-an-d-z-in-the-above-reaction-beginarrayll-x-y-endarray
tags: ['Chemistry', 'Alcohols Phenols and Ethers', 'TS EAMCET', 'TS EAMCET 2014']
source_db: MarksBatch1_P2.db
slug:
c-6-h-5-o-ch-2-ch-3-hi-y-z-i-d-e-n-t-i-f-y-y-an-d-z-in-the-above-reaction-beginarrayll-x-y-endarray-89414

question:
<div class="question">$$<br/>\mathrm{C}_6 \mathrm{H}_5-\mathrm{O}-\mathrm{CH}_2 \mathrm{CH}_3 \underset{\Delta}{\stackrel{\mathrm{HI}}{\longrightarrow}} Y+Z<br/>$$<br/>Identify $Y$ and $Z$ in the above reaction.<br/>\begin{array}{l|l}<br/>X &amp; Y<br/>\end{array}</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">\begin{array}{l|l}<br/>\mathrm{C}_6 \mathrm{H}_5 \mathrm{OH} &amp; \mathrm{H}_3 \mathrm{CCH}_3<br/>\end{array}</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">\begin{array}{l|l}<br/>\mathrm{C}_2 \mathrm{H}_5 \mathrm{I} &amp; \mathrm{C}_6 \mathrm{H}_5 \mathrm{CHO}<br/>\end{array}</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">\begin{array}{l|l}<br/>\mathrm{C}_6 \mathrm{H}_5 \mathrm{I} &amp; \mathrm{H}_3 \mathrm{CCH}_2 \mathrm{OH}<br/>\end{array}</span> </li><li class="correct"> <span class="option-label">D</span> <span class="option-data">$\mathrm{C}_6 \mathrm{H}_5 \mathrm{OH} \quad \mathrm{H}_3 \mathrm{CCH}_2$</span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">$\mathrm{C}_6 \mathrm{H}_5 \mathrm{OH} \quad \mathrm{H}_3 \mathrm{CCH}_2$</span> </div>

answer:
<div class="solution">When an alkyl aryl ether is reacted with halogen acid $(H X)$, the products are always phenol and an alkyl halide.<br/>$$<br/>\begin{aligned}<br/>\mathrm{C}_6 \mathrm{H}_5-\mathrm{O}-\mathrm{CH}_2- &amp; \mathrm{CH}_3+\mathrm{HI} \stackrel{100 \mathrm{C}}{\longrightarrow} \\<br/>&amp; \mathrm{C}_6 \mathrm{H}_5 \mathrm{OH}+\mathrm{CH}_3-\mathrm{CH}_2-\mathrm{I}<br/>\end{aligned}<br/>$$</div>


title: c-is-associated-with
slug: c-is-associated-with-44383
tags: ['Mathematics', 'Continuity and Differentiability', 'NDA', 'NDA 2010 (Phase 1)']
source_db: MarksBatch1_P2.db
question:
<div class="question">C is associated with<br/><img src="https://cdn-question-pool.getmarks.app/pyq/nda/KZ_9YHdRVYib_6RC_uIf8TdDaNVmMVwucfK0_fpsgIw.original.fullsize.png"/></div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">$1,4,6,7,9,11$</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">$2,4,8,9$</span> </li><li class="correct"> <span class="option-label">C</span> <span class="option-data">$1,4,6,7,9$</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>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">$1,4,6,7,9$</span> </div>

answer:
<div class="solution">$\tan x$ is a periodic function with period $\pi$ and is<br/>discontinuous at $x=\frac{m \pi}{2}$. Also, tan $x$ is not differentiable at every point on $(-\infty, \infty)$ and increases on $\left(0, \frac{\pi}{2}\right)$ and increases on $\left(\frac{\pi}{2}, \pi\right)$. Hence, option (c) is correct.</div>


tags: ['Chemistry', 'Electrochemistry', 'MHT CET', 'MHT CET 2022 (05 Aug Shift 2)']
source_db: MarksBatch1_P2.db
title:
calculate-standard-cell-potential-for-a-cell-having-following-reaction-2-al-s-3-ni-2-2-al-3-3-ni-s-e-ni-025-v-e-a-1-166-v

slug:
calculate-standard-cell-potential-for-a-cell-having-following-reaction-2-al-s-3-ni-2-2-al-3-3-ni-s-e-ni-025-v-e-a-1-166-v-57679

question:
<div class="question">Calculate standard cell potential for a cell having following reaction,<br/>$\begin{aligned} &amp; 2 \mathrm{Al}_{(\mathrm{s})}+3 \mathrm{Ni}^{2+} \rightarrow 2 \mathrm{Al}^{3+}+3 \mathrm{Ni}(\mathrm{s}) \\ &amp; \left(\mathrm{E}_{\mathrm{Ni}}^{\circ}=-0.25 \mathrm{~V}, \mathrm{E}_{\mathrm{A} 1}^{\circ}=-1.66 \mathrm{~V}\right)\end{aligned}$</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">$0.50 \mathrm{~V}$</span> </li><li class="correct"> <span class="option-label">B</span> <span class="option-data">$1.41 \mathrm{~V}$</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">C</span> <span class="option-data">$-0.50 \mathrm{~V}$</span> </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">$1.41 \mathrm{~V}$</span> </div>

answer:
<div class="solution">$\begin{aligned} &amp; \mathrm{E}_{\text {cell }}^{\circ}=\mathrm{E}_{\mathrm{Ni}}^{\circ}-\mathrm{E}_{\mathrm{Ai}}^{\circ} \\ &amp; =-0.25-(-1.66) \\ &amp; =1.41 \mathrm{~V}\end{aligned}$</div>


tags: ['Chemistry', 'Electrochemistry', 'JEE Main']
source_db: MarksBatch1_P2.db
title:
calculate-standard-free-energy-change-for-the-reaction-2-1-cu-s-2-1-cl-2-g-2-1-cu-2-cl-taking-place-at-2-5-c-in-a-cell-whose-standard-emf-is-102-volts

slug:
calculate-standard-free-energy-change-for-the-reaction-2-1-cu-s-2-1-cl-2-g-2-1-cu-2-cl-taking-place-at-2-5-c-in-a-cell-whose-standard-emf-is-102-volts-10233

question:
<div class="question">Calculate standard free energy change for the reaction $\frac{1}{2} \mathrm{Cu}(\mathrm{s})+\frac{1}{2} \mathrm{Cl}_2(\mathrm{~g}) \rightleftharpoons \frac{1}{2} \mathrm{Cu}^{2+}+\mathrm{Cl}^{-}$taking place at $25^{\circ} \mathrm{C}$ in a cell whose standard e.m.f. is 1.02 volts</div>

options:
<ul class="options"> <li class="correct"> <span class="option-label">A</span> <span class="option-data">$-98430 J$</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">$98430 \mathrm{~J}$</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">$96500 \mathrm{~J}$</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">$-49215 J$</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">$-98430 J$</span> </div>

answer:
<div class="solution">$\Delta G=-n F E^O$<br/>$\Delta G=-1 \times 96500 \times 1.02 . \quad \Delta G=-98430$</div>


tags: ['Chemistry', 'Electrochemistry', 'NEET']
source_db: MarksBatch1_P2.db
title:
calculate-standard-free-energy-change-for-the-reaction-2-a-g-2-h-h-2-2-a-g-given-e-a-g-a-g-o-080-v-1

slug:
calculate-standard-free-energy-change-for-the-reaction-2-a-g-2-h-h-2-2-a-g-given-e-a-g-a-g-o-080-v-1-49186

question:
<div class="question">Calculate standard free energy change for the reaction <math><mn>2</mn><mi mathvariant="normal">A</mi><mi mathvariant="normal">g</mi><mo>+</mo><mn>2</mn><msup><mrow><mi mathvariant="normal">H</mi></mrow><mrow><mo>+</mo></mrow></msup><mo>â</mo><msub><mrow><mi mathvariant="normal">H</mi></mrow><mrow><mn>2</mn></mrow></msub><mo>+</mo><mn>2</mn><mi mathvariant="normal">A</mi><msup><mrow><mi mathvariant="normal">g</mi></mrow><mrow><mo>+</mo></mrow></msup></math><br/>
Given: <math><msubsup><mrow><mi mathvariant="normal">E</mi></mrow><mrow><mi mathvariant="normal">A</mi><msup><mrow><mi mathvariant="normal">g</mi></mrow><mrow><mo>+</mo></mrow></msup><mo>/</mo><mi mathvariant="normal">A</mi><mi mathvariant="normal">g</mi></mrow><mrow><mi mathvariant="normal">o</mi></mrow></msubsup><mo>=</mo><mo>+</mo><mn>0.80</mn><mi mathvariant="normal">V</mi></math></div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">-308.08 kJ</span> </li><li class="correct"> <span class="option-label">B</span> <span class="option-data">154.4 kJ</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">77.2 kJ</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data"><math><mo>-</mo><mn>154.4</mn></math> kJ</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">154.4 kJ</span> </div>

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><msub><mrow><mi mathvariant="normal">H</mi></mrow><mrow><mn>2</mn></mrow></msub></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">g</mi></mrow><mrow><mi mathvariant="normal">o</mi></mrow></msubsup></math><br/><math><mo>=</mo><mn>0</mn><mo>-</mo><mn>0.80</mn><mo>=</mo><mo>-</mo><mn>0.80</mn></math><br/><math><mi mathvariant="normal">Î</mi><mi mathvariant="normal">G</mi><mo>Â°</mo><mo>=</mo><mo>-</mo><mi mathvariant="normal">n</mi><mi mathvariant="normal">F</mi><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></math><br/><math><mo>=</mo><mo>-</mo><mn>2</mn><mo>Ã</mo><mn>96500</mn><mo>Ã</mo><mo>(</mo><mo>-</mo><mn>0.8</mn><mo>)</mo></math><br/><math> <mrow> <mo>=</mo><mo>+</mo><mn>154.4</mn><mtext> </mtext><mtext>kJ</mtext></mrow></math></div>


title: calculate-standard-free-energy-change-for-the-reaction-2-a-g-2-h-h-2-2-a-g-given-e-a-g-a-g-o-080-v
tags: ['Chemistry', 'Electrochemistry', 'JEE Main']
source_db: MarksBatch1_P2.db
slug:
calculate-standard-free-energy-change-for-the-reaction-2-a-g-2-h-h-2-2-a-g-given-e-a-g-a-g-o-080-v-98758

question:
<div class="question">Calculate standard free energy change for the reaction <math><mn>2</mn><mi mathvariant="normal">A</mi><mi mathvariant="normal">g</mi><mo>+</mo><mn>2</mn><msup><mrow><mi mathvariant="normal">H</mi></mrow><mrow><mo>+</mo></mrow></msup><mo>â</mo><msub><mrow><mi mathvariant="normal">H</mi></mrow><mrow><mn>2</mn></mrow></msub><mo>+</mo><mn>2</mn><mi mathvariant="normal">A</mi><msup><mrow><mi mathvariant="normal">g</mi></mrow><mrow><mo>+</mo></mrow></msup></math><br/> <br/>
Given: <math><msubsup><mrow><mi mathvariant="normal">E</mi></mrow><mrow><mrow><mrow><mi mathvariant="normal">A</mi><msup><mrow><mi mathvariant="normal">g</mi></mrow><mrow><mo>+</mo></mrow></msup></mrow><mo>/</mo><mrow><mi mathvariant="normal">A</mi><mi mathvariant="normal">g</mi></mrow></mrow></mrow><mrow><mi mathvariant="normal">o</mi></mrow></msubsup><mo>=</mo><mo>+</mo><mn>0.80</mn><mi mathvariant="normal">V</mi></math></div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">308.08 kJ</span> </li><li class="correct"> <span class="option-label">B</span> <span class="option-data">154.4 kJ</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">77.2 kJ</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data"> â 154.4 kJ</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">154.4 kJ</span> </div>

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><msub><mrow><mi mathvariant="normal">H</mi></mrow><mrow><mn>2</mn></mrow></msub></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">g</mi></mrow><mrow><mi mathvariant="normal">o</mi></mrow></msubsup></math><br/><br/><math><mo>=</mo><mn>0</mn><mo>-</mo><mn>0.80</mn><mo>=</mo><mo>-</mo><mn>0.80</mn></math><br/><br/><math><mi mathvariant="normal">Î</mi><mi mathvariant="normal">G</mi><mo>Â°</mo><mo>=</mo><mo>-</mo><mi mathvariant="normal">n</mi><mi mathvariant="normal">F</mi><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></math><br/><br/><math><mo>=</mo><mo>-</mo><mn>2</mn><mo>Ã</mo><mn>96500</mn><mo>Ã</mo><mo>(</mo><mo>-</mo><mn>0.8</mn><mo>)</mo></math><br/><br/><math><mo>=</mo><mo>+</mo><mn>154.4 </mn><mi mathvariant="normal">k</mi><mi mathvariant="normal">J</mi></math></div>


tags: ['Chemistry', 'Electrochemistry', 'MHT CET', 'MHT CET 2022 (11 Aug Shift 1)']
source_db: MarksBatch1_P2.db
title:
calculate-standard-potential-of-a-cell-having-electrode-reaction-as-cd-aq-2-2-e-cd-s-e-0403-v-zn-aq-2-2-e-zn-s-e-0763-v

slug:
calculate-standard-potential-of-a-cell-having-electrode-reaction-as-cd-aq-2-2-e-cd-s-e-0403-v-zn-aq-2-2-e-zn-s-e-0763-v-91004

question:
<div class="question">Calculate standard potential of a cell having electrode reaction as<br/>$\begin{aligned}<br/>&amp; \mathrm{Cd}_{(\mathrm{aq})}^{2+}+2 \mathrm{e}^{-} \rightarrow \mathrm{Cd}_{\mathrm{s}} \mathrm{E}^{\circ}=-0.403 \mathrm{~V} \\<br/>&amp; \mathrm{Zn}_{(\mathrm{aq})}^{2+}+2 \mathrm{e}^{-} \rightarrow \mathrm{Zn}_{(\mathrm{s})} \mathrm{E}^{\circ}=-0.763 \mathrm{~V}<br/>\end{aligned}$</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">0.201 V</span> </li><li class="correct"> <span class="option-label">B</span> <span class="option-data">0.360 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">C</span> <span class="option-data">0.481 V</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">1.166 V</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">0.360 V</span> </div>

answer:
<div class="solution">$\begin{aligned} &amp; \mathrm{E}_{\text {cell }}^{\circ}=\mathrm{E}_{\text {Cathode }}^{\circ}-\mathrm{E}_{\text {Anode }}^{\circ} \\ &amp; =-0.403-(-0.763) \\ &amp; =0.763-0.403 \\ &amp; =0.36 \mathrm{~V}\end{aligned}$</div>


tags: ['Chemistry', 'Some Basic Concepts of Chemistry']
options: None
correct_option: None
source_db: MarksBatch1_P2.db
title:
calculate-the-atomic-mass-average-of-chlorine-using-the-following-data-beginarraylcl-text-natural-abundance-text-molar-mass-35-mathrmcl-7577-349689-37

slug:
calculate-the-atomic-mass-average-of-chlorine-using-the-following-data-beginarraylcl-text-natural-abundance-text-molar-mass-35-mathrmcl-7577-349689-37-14851

question:
<div class="question">Calculate the atomic mass (average) of chlorine using the following data :<br/>\(\begin{array}{lcl} &amp; \text { % Natural Abundance } &amp; \text { Molar Mass } \\ { }^{35} \mathrm{Cl} &amp; 75.77 &amp; 34.9689 \\ { }^{37} \mathrm{Cl} &amp; 24.23 &amp; 36.9659\end{array}\)</div>

answer:
<div class="solution">Fractional abundance of \({ }^{35} \mathrm{Cl}=0.7577\)<br/>Molar mass \(=34.9689\)<br/>Fractional abundance of \({ }^{37} \mathrm{Cl}=0.2423\)<br/>Molar mass \(=36.9659\)<br/>Average atomic mass<br/>\(=(0.7577)(34.9689 \mathrm{amu})+(0.2423)(36.9659 \mathrm{amu})\) \(=26.4959+8.9568=35.4527\)</div>


tags: ['Chemistry', 'Thermodynamics (C)']
options: None
correct_option: None
source_db: MarksBatch1_P2.db
title:
calculate-the-entropy-change-in-surroundings-when-100-mathrmmol-of-mathrmh2-mathrmol-is-formed-under-standard-conditions-deltamathrmf-mathrmhcirc286-m

slug:
calculate-the-entropy-change-in-surroundings-when-100-mathrmmol-of-mathrmh2-mathrmol-is-formed-under-standard-conditions-deltamathrmf-mathrmhcirc286-m-21019

question:
<div class="question">Calculate the entropy change in surroundings when \(1.00 \mathrm{~mol}\) of \(\mathrm{H}_2 \mathrm{O}(l)\) is formed under standard conditions: \(\Delta_{\mathrm{f}} \mathrm{H}^{\circ}=-286 \mathrm{~kJ} \mathrm{~mol}^{-1}\).</div>

answer:
<div class="solution">\(\mathrm{H}_2(\mathrm{~g})+\frac{1}{2} \mathrm{O}_2(\mathrm{~g}) \longrightarrow \mathrm{H}_2 \mathrm{O}(\ell) \Delta_{\mathrm{f}} \mathrm{H}^{\circ}=-286 \mathrm{~kJ} \mathrm{~mol}^{-1}\)<br/>This means that when \(1 \mathrm{~mol}_2 \mathrm{H}_2 \mathrm{O}(\mathrm{I})\), is formed, \(286 \mathrm{~kJ}\) of heat is released. This heat is absorbed by the surroundings, i.e., \(\mathrm{q}_{\text {surr }}=+286 \mathrm{kJmol}^{-1}\).<br/>\(\begin{aligned}<br/>\Delta \mathrm{S}=&amp; \mathrm{q}_{\text {surr }} / \mathrm{T}=\frac{286 \mathrm{~kJ} \mathrm{~mol}^{-1}}{298 \mathrm{~K}} \\<br/>&amp;=0.9597 \mathrm{kJK}^{-1} \mathrm{~mol}^{-1}=959.7 \mathrm{JK}^{-1} \mathrm{~mol}^{-1} .<br/>\end{aligned}\)</div>


tags: ['Chemistry', 'Thermodynamics (C)', 'NEET']
source_db: MarksBatch1_P2.db
title:
calculate-the-entropy-change-in-surroundings-when-100-mol-of-h-2-ol-is-formed-under-standard-conditions-f-h-286-kj-mol-1

slug:
calculate-the-entropy-change-in-surroundings-when-100-mol-of-h-2-ol-is-formed-under-standard-conditions-f-h-286-kj-mol-1-60936

question:
<div class="question">Calculate the entropy change in surroundings when 1.00 mol of H<sub>2</sub>O(l) is formed under standard conditions. (â<sub>f</sub>H<sup>â</sup>= â286 kJ mol<sup>â1</sup>)</div>

options:
<ul class="options"> <li class="correct"> <span class="option-label">A</span> <span class="option-data">âS<sub>surr</sub>= 959.73 J K<sup>â1</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><li class=""> <span class="option-label">B</span> <span class="option-data">âS<sub>surr</sub>= 910.42 J K<sup>â1</sup></span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">âS<sub>surr</sub>= 456.84 J K<sup>â1</sup></span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">âS<sub>surr</sub>= 494.15 J K<sup>â1</sup></span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">âS<sub>surr</sub>= 959.73 J K<sup>â1</sup></span> </div>

answer:
<div class="solution">Correct Option is : (A)<br/>âS<sub>surr</sub>= 959.73 J K<sup>â1</sup></div>


tags: ['Chemistry', 'Electrochemistry', 'JEE Main', 'JEE Main 2019 (08 Apr Shift 2)']
source_db: MarksBatch1_P2.db
title:
calculate-the-standard-cell-potential-in-v-of-the-cell-in-which-the-following-reaction-takes-place-f-e-2-a-q-a-g-a-q-f-e-3-a-q-a-g-s-given-that-e-ag-a

slug:
calculate-the-standard-cell-potential-in-v-of-the-cell-in-which-the-following-reaction-takes-place-f-e-2-a-q-a-g-a-q-f-e-3-a-q-a-g-s-given-that-e-ag-a-23289

question:
<div class="question"><p>Calculate the standard cell potential (in V) of the cell in which the following reaction takes place:</p><p><math><msup><mrow><mi mathvariant="normal">F</mi><mi mathvariant="normal">e</mi></mrow><mrow><mn>2</mn><mo>+</mo></mrow></msup><mi mathvariant="normal"> </mi><mfenced separators="|"><mrow><mi mathvariant="normal">a</mi><mi mathvariant="normal">q</mi></mrow></mfenced><mo>+</mo><mi mathvariant="normal">A</mi><msup><mrow><mi mathvariant="normal">g</mi></mrow><mrow><mo>+</mo></mrow></msup><mfenced separators="|"><mrow><mi mathvariant="normal">a</mi><mi mathvariant="normal">q</mi></mrow></mfenced><mo>→</mo><mi mathvariant="normal">F</mi><msup><mrow><mi mathvariant="normal">e</mi></mrow><mrow><mn>3</mn><mo>+</mo></mrow></msup><mfenced separators="|"><mrow><mi mathvariant="normal">a</mi><mi mathvariant="normal">q</mi></mrow></mfenced><mo>+</mo><mi mathvariant="normal">A</mi><mi mathvariant="normal">g</mi><mo>(</mo><mi mathvariant="normal">s</mi><mo>)</mo></math></p><p>Given that<br/><math xmlns="http://www.w3.org/1998/Math/MathML"><msubsup><mi mathvariant="normal">E</mi><mrow><msup><mi>Ag</mi><mo>+</mo></msup><mo>/</mo><mi mathvariant="normal">A</mi><mi mathvariant="normal">g</mi></mrow><mi mathvariant="normal">o</mi></msubsup><mo>=</mo><mi mathvariant="normal">x</mi><mi mathvariant="normal"> </mi><mi mathvariant="normal">V</mi></math><br/><math><msubsup><mrow><mi mathvariant="normal">E</mi></mrow><mrow><msup><mrow><mi mathvariant="normal">F</mi><mi mathvariant="normal">e</mi></mrow><mrow><mn>2</mn><mo>+</mo></mrow></msup><mo>/</mo><mi mathvariant="normal">F</mi><mi mathvariant="normal">e</mi></mrow><mrow><mi mathvariant="normal">o</mi></mrow></msubsup><mo>=</mo><mi mathvariant="normal">y</mi><mi mathvariant="normal"> </mi><mi mathvariant="normal">V</mi></math><br/><math><msubsup><mrow><mi mathvariant="normal">E</mi></mrow><mrow><msup><mrow><mi mathvariant="normal">F</mi><mi mathvariant="normal">e</mi></mrow><mrow><mn>3</mn><mo>+</mo></mrow></msup><mo>/</mo><mi mathvariant="normal">F</mi><mi mathvariant="normal">e</mi></mrow><mrow><mi mathvariant="normal">o</mi></mrow></msubsup><mo>=</mo><mi mathvariant="normal">z</mi><mi mathvariant="normal"> </mi><mi mathvariant="normal">V</mi></math></p></div>

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

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value"><math><mi mathvariant="normal">x</mi><mo>+</mo><mn>2</mn><mi mathvariant="normal">y</mi><mo>-</mo><mn>3</mn><mi mathvariant="normal">z</mi></math></span> </div>

answer:
<div class="solution"><p><math><mover><mrow><mi mathvariant="normal">F</mi><msup><mrow><mi mathvariant="normal">e</mi></mrow><mrow><mo>+</mo><mn>2</mn></mrow></msup></mrow><mrow><mi mathvariant="normal">A</mi></mrow></mover><mo>+</mo><mover><mrow><mi mathvariant="normal">A</mi><msup><mrow><mi mathvariant="normal">g</mi></mrow><mrow><mo>+</mo></mrow></msup></mrow><mrow><mi mathvariant="normal">C</mi></mrow></mover><mo>→</mo><mi mathvariant="normal">F</mi><msup><mrow><mi mathvariant="normal">e</mi></mrow><mrow><mn>3</mn><mo>+</mo></mrow></msup><mo>+</mo><mi mathvariant="normal">A</mi><mi mathvariant="normal">g</mi></math></p><p><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><mi mathvariant="normal">S</mi><mi mathvariant="normal">R</mi><mi mathvariant="normal">P</mi></math> of cathode <math><mo>-</mo><mi mathvariant="normal"> </mi><mi mathvariant="normal">S</mi><mi mathvariant="normal">R</mi><mi mathvariant="normal">P</mi></math> of anode<br/><math><mo>=</mo><msubsup><mrow><mi mathvariant="normal">E</mi></mrow><mrow><mi mathvariant="normal">A</mi><msup><mrow><mi mathvariant="normal">g</mi></mrow><mrow><mo>+</mo></mrow></msup><mo>|</mo><mi mathvariant="normal">A</mi><mi mathvariant="normal">g</mi></mrow><mrow><mi mathvariant="normal">o</mi></mrow></msubsup><mo>-</mo><msubsup><mrow><mi mathvariant="normal">E</mi></mrow><mrow><mi mathvariant="normal">F</mi><msup><mrow><mi mathvariant="normal">e</mi></mrow><mrow><mo>+</mo><mn>3</mn></mrow></msup><mo>|</mo><mi mathvariant="normal">F</mi><msup><mrow><mi mathvariant="normal">e</mi></mrow><mrow><mo>+</mo><mn>2</mn></mrow></msup></mrow><mrow><mi mathvariant="normal">o</mi></mrow></msubsup></math><br/><math><mo>=</mo><mi mathvariant="normal">x</mi><mo>-</mo><msubsup><mrow><mi mathvariant="normal">E</mi></mrow><mrow><mi mathvariant="normal">F</mi><msup><mrow><mi mathvariant="normal">e</mi></mrow><mrow><mn>3</mn><mo>+</mo></mrow></msup><mo>|</mo><mi mathvariant="normal">F</mi><msup><mrow><mi mathvariant="normal">e</mi></mrow><mrow><mo>+</mo><mn>2</mn></mrow></msup></mrow><mrow><mi mathvariant="normal">o</mi></mrow></msubsup></math></p><p>Since <math><mi mathvariant="normal">E</mi><mo>°</mo></math> cell is an intensive property, the <math><mi mathvariant="normal">E</mi><mo>°</mo></math> cell values are not additive by nature. But the standard Gibbs free energy change is an extensive property and hence can be added.</p><p>(i) <math xmlns="http://www.w3.org/1998/Math/MathML"><mi mathvariant="normal">F</mi><msup><mi mathvariant="normal">e</mi><mrow><mo>+</mo><mn>3</mn></mrow></msup><mo>→</mo><mi mathvariant="normal">F</mi><mi mathvariant="normal">e</mi><mo>+</mo><mn>3</mn><msup><mi mathvariant="normal">e</mi><mo>-</mo></msup><mo>→</mo><mi mathvariant="normal">Z</mi><mo>=</mo><msubsup><mi mathvariant="normal">E</mi><mn>1</mn><mi mathvariant="normal">o</mi></msubsup><mo>;</mo><mtext>  </mtext><mi mathvariant="normal">Δ</mi><msub><mi mathvariant="normal">G</mi><mn>1</mn></msub><mo>=</mo><mo>-</mo><mn>3</mn><mo>×</mo><mi mathvariant="normal">F</mi><mo>×</mo><mi>z</mi></math></p><p>(ii) <math><mi mathvariant="normal">F</mi><msup><mrow><mi mathvariant="normal">e</mi></mrow><mrow><mo>+</mo><mn>2</mn></mrow></msup><mo>→</mo><mi mathvariant="normal">F</mi><mi mathvariant="normal">e</mi><mo>+</mo><mn>2</mn><msup><mrow><mi mathvariant="normal">e</mi></mrow><mrow><mo>-</mo></mrow></msup></math> <math><mi mathvariant="normal">Y</mi><mo>=</mo><msubsup><mrow><mi mathvariant="normal">E</mi></mrow><mrow><mn>2</mn></mrow><mrow><mi mathvariant="normal">o</mi></mrow></msubsup><mo>;</mo></math> <math xmlns="http://www.w3.org/1998/Math/MathML"><mi mathvariant="normal"> </mi><mi mathvariant="normal">Δ</mi><msub><mi mathvariant="normal">G</mi><mn>2</mn></msub><mo>=</mo><mo>-</mo><mn>2</mn><mo>×</mo><mi mathvariant="normal">F</mi><mo>×</mo><mi>y</mi></math></p><p>Subtracting (ii) from (i)<br/><math><mi mathvariant="normal">F</mi><msup><mrow><mi mathvariant="normal">e</mi></mrow><mrow><mo>+</mo><mn>3</mn></mrow></msup><mo>→</mo><mi mathvariant="normal">F</mi><msup><mrow><mi mathvariant="normal">e</mi></mrow><mrow><mo>+</mo><mn>2</mn></mrow></msup></math> <math><mi mathvariant="normal">Δ</mi><msub><mrow><mi mathvariant="normal">G</mi></mrow><mrow><mn>3</mn></mrow></msub><mo>=</mo><mi mathvariant="normal">Δ</mi><msub><mrow><mi mathvariant="normal">G</mi></mrow><mrow><mn>1</mn></mrow></msub><mo>-</mo><mi mathvariant="normal">Δ</mi><msub><mrow><mi mathvariant="normal">G</mi></mrow><mrow><mn>2</mn></mrow></msub></math></p><p><math><mfenced separators="|"><mrow><msup><mrow><mi mathvariant="normal">E</mi></mrow><mrow><mi mathvariant="normal">o</mi></mrow></msup><mo>=</mo><mo>-</mo><mn>2</mn><mi mathvariant="normal">y</mi><mo>+</mo><mn>3</mn><mi mathvariant="normal">z</mi></mrow></mfenced></math></p><p><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><mi mathvariant="normal">x</mi><mo>-</mo><mfenced separators="|"><mrow><mo>-</mo><mn>2</mn><mi mathvariant="normal">y</mi><mo>+</mo><mn>3</mn><mi mathvariant="normal">z</mi></mrow></mfenced></math></p><p><math><mo>=</mo><mi mathvariant="normal">x</mi><mo>+</mo><mn>2</mn><mi mathvariant="normal">y</mi><mo>-</mo><mn>3</mn><mi mathvariant="normal">z</mi></math></p></div>


tags: ['Chemistry', 'Electrochemistry', 'JEE Main']
source_db: MarksBatch1_P2.db
title:
calculate-the-standard-cell-potentials-of-galvanic-cell-in-which-the-following-reactions-take-place-2-mathrmcrmathrms3-mathrmcd2mathrmaq-longrightarro

slug:
calculate-the-standard-cell-potentials-of-galvanic-cell-in-which-the-following-reactions-take-place-2-mathrmcrmathrms3-mathrmcd2mathrmaq-longrightarro-22630

question:
<div class="question">Calculate the standard cell potentials of galvanic cell in which the following reactions take place \( 2 \mathrm{Cr}(\mathrm{s})+3 \mathrm{Cd}^{2+}(\mathrm{aq}) \longrightarrow 2 \mathrm{Cr}^{3+}(\mathrm{aq})+3 \mathrm{Cd} \) Calculate the \( \Delta_{\mathrm{r}} \mathrm{G}^{0} \) and equilibrium constant for the reactions. \(\mathrm{E}_{\mathrm{Cr}^{3+} / \mathrm{Cr}}^{\mathrm{o}}=-0.74 \mathrm{~V}, \mathrm{E}_{\mathrm{Cd}^{2+} / \mathrm{Cd}}^{\mathrm{o}}=-0.40 \mathrm{~V}\) The values of \( E_{\text {cell }}^{0}, \Delta_{r} G^{0} \) and \( \mathrm{K}_{\mathrm{C}} \) may be</div>

options:
<ul class="options"> <li class="correct"> <span class="option-label">A</span> <span class="option-data">\( \begin{array}{ccc}E_{\text {cell }}^{0} &amp; \Delta_{r} G^{0} &amp; K_{c} \\ 0 \cdot 34 \mathrm{~V} &amp; -196 \cdot 86 \mathrm{~kJ} &amp; 3 \cdot 17 \times 10^{34}\end{array} \)</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">\( \begin{array}{ccc}E_{\text {cell }}^{0} &amp; \Delta_{r} G^{0} &amp; K_{c} \\ 0 \cdot 34 \mathrm{~V} &amp; -146 \cdot 86 \mathrm{~kJ} &amp; 3 \cdot 17 \times 10^{34}\end{array} \)</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">\( \begin{array}{ccc}E_{\text {cell }}^{0} &amp; \Delta_{r} G^{0} &amp; K_{c} \\ 0 \cdot 34 \mathrm{~V} &amp; -106 \cdot 86 \mathrm{~kJ} &amp; 1 \cdot 17 \times 10^{34}\end{array} \)</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">\( \begin{array}{ccc}E_{\text {cell }}^{0} &amp; \Delta_{r} G^{0} &amp; K_{c} \\ 0 \cdot 34 \mathrm{~V} &amp; -196 \cdot 86 \mathrm{~kJ} &amp; 3 \cdot 17 \times 10^{34}\end{array} \)</span> </div>

answer:
<div class="solution"><p>Given  ; <math xmlns="http://www.w3.org/1998/Math/MathML"><mn>2</mn><mtext>Cr</mtext><mfenced><mtext>s</mtext></mfenced><mo>+</mo><mn>3</mn><msup><mtext>Cd</mtext><mrow><mn>2</mn><mo>+</mo></mrow></msup><mfenced><mtext>aq</mtext></mfenced><mo>⟶</mo><mn>2</mn><msup><mtext>Cr</mtext><mrow><mn>3</mn><mo>+</mo></mrow></msup><mfenced><mtext>aq</mtext></mfenced><mo>+</mo><mn>3</mn><mtext>Cd</mtext></math></p><p><math> <mrow> <msubsup> <mtext>E</mtext> <mrow> <msup> <mtext>Cr</mtext> <mrow> <mn>3</mn> <mo>+</mo> </mrow> </msup> <mo>/</mo> <mtext>Cr</mtext> </mrow> <mtext>o</mtext> </msubsup> <mo>=</mo> <mo>-</mo> <mn>0</mn> <mtext>.</mtext> <mn>7</mn> <mn>4 </mn> <mtext>V; </mtext> <msubsup> <mtext>E</mtext> <mfenced close=")" open="(" separators=","> <mrow> <msup> <mtext>Cd</mtext> <mrow> <mn>2</mn> <mo>+</mo> </mrow> </msup> <mo>/</mo> <mtext>Cd</mtext> </mrow> </mfenced> <mtext>o</mtext> </msubsup> <mo>=</mo> <mo>-</mo> <mn>0</mn> <mtext>.</mtext> <mn>4</mn> <mn>0</mn> <mtext> V</mtext> </mrow> </math><br/>(a)  Calculation of standard cell potential (E<sup>o</sup>)<br/>                         <math xmlns="http://www.w3.org/1998/Math/MathML"><msubsup><mtext>E</mtext><mtext>cell</mtext><mtext>o</mtext></msubsup><mo>=</mo><msubsup><mtext>E</mtext><mtext>cathode</mtext><mtext>o</mtext></msubsup><mo>-</mo><msubsup><mtext>E</mtext><mtext>anode</mtext><mtext>o</mtext></msubsup><mspace linebreak="newline"></mspace><msubsup><mtext>E</mtext><mtext>cell</mtext><mtext>o</mtext></msubsup><mtext> = (-0.40)-(-0.74) V</mtext><mspace linebreak="newline"></mspace><msubsup><mtext>E</mtext><mtext>cell</mtext><mtext>o</mtext></msubsup><mtext> = -0.40 + 0.74V = 0.34V</mtext></math><br/><math xmlns="http://www.w3.org/1998/Math/MathML"><msubsup><mtext>E</mtext><mtext>cell</mtext><mtext>o</mtext></msubsup><mo>=</mo><mn>0</mn><mtext>.</mtext><mn>3</mn><mn>4</mn><mtext> V</mtext></math><br/>(b)  Calculation of <math> <mrow> <msub> <mo>Δ</mo> <mtext>r</mtext> </msub> <msup> <mtext>G</mtext> <mtext>o</mtext> </msup> </mrow> </math>. </p><p>We know that , <br/> <math xmlns="http://www.w3.org/1998/Math/MathML"><msub><mo>Δ</mo><mtext>r</mtext></msub><msup><mtext>G</mtext><mtext>o</mtext></msup><mo>=</mo><mo>-</mo><mtext>nF</mtext><msubsup><mtext>E</mtext><mtext>cell</mtext><mtext>o</mtext></msubsup></math></p><p>Here the value of n = 6 </p><p>thus ,<math xmlns="http://www.w3.org/1998/Math/MathML"><msub><mo>Δ</mo><mtext>r</mtext></msub><msup><mtext>G</mtext><mtext>o</mtext></msup><mo>=</mo><mo>-</mo><mo> </mo><mn>6</mn><mo> </mo><mo>×</mo><mo> </mo><mn>96500</mn><mo> </mo><mo>×</mo><mo> </mo><mn>0</mn><mo>.</mo><mn>34</mn><mo> </mo><mi>J</mi><mo> </mo><mi>m</mi><mi>o</mi><msup><mi>l</mi><mrow><mo>-</mo><mn>1</mn></mrow></msup><mspace linebreak="newline"></mspace><msub><mo>Δ</mo><mtext>r</mtext></msub><msup><mtext>G</mtext><mtext>o</mtext></msup><msup><mtext> = -196860 J mol</mtext><mrow><mo>-</mo><mn>1</mn></mrow></msup><mspace linebreak="newline"></mspace><msub><mo>Δ</mo><mtext>r</mtext></msub><msup><mtext>G</mtext><mtext>o</mtext></msup><msup><mtext> = -196.86 kJmol</mtext><mrow><mo>-</mo><mn>1</mn></mrow></msup></math>  <br/>(c)  Calculation of equilibrium constant (K<sub>c</sub>)<br/> <math xmlns="http://www.w3.org/1998/Math/MathML"><msub><mo>Δ</mo><mtext>r</mtext></msub><msup><mtext>G</mtext><mtext>o</mtext></msup><mo>=</mo><mo>-</mo><mn>2</mn><mo>.</mo><mn>303</mn><mo> </mo><mi>R</mi><mi>T</mi><mo> </mo><mi>log</mi><mo> </mo><msub><mi>K</mi><mi>c</mi></msub></math> <br/>  <math> <mrow> <mtext>log </mtext> <msub> <mtext>K</mtext> <mtext>c</mtext> </msub> <mo>=</mo> <mfrac> <mrow> <mo>-</mo> <msub> <mo>Δ</mo> <mtext>r</mtext> </msub> <msup> <mtext>G</mtext> <mtext>o</mtext> </msup> </mrow> <mrow> <mn>2</mn> <mtext>.</mtext> <mn>3</mn> <mn>0</mn> <mn>3</mn> <mtext> RT</mtext> </mrow> </mfrac> </mrow> </math><br/> <math xmlns="http://www.w3.org/1998/Math/MathML"><msub><mtext>log K</mtext><mi>c</mi></msub><mo>=</mo><mfrac><mrow><mo>-</mo><mo>(</mo><mo>-</mo><mn>1</mn><mn>9</mn><mn>6</mn><mn>8</mn><mn>6</mn><mn>0</mn><mo>)</mo></mrow><mrow><mn>2</mn><mo>·</mo><mn>3</mn><mn>0</mn><mn>3</mn><mo>×</mo><mn>8</mn><mo>·</mo><mn>3</mn><mn>1</mn><mn>4</mn><mo>×</mo><mn>2</mn><mn>9</mn><mn>8</mn></mrow></mfrac><mspace linebreak="newline"></mspace><msub><mtext>log K</mtext><mi>c</mi></msub><mtext> = 34.50</mtext><mspace linebreak="newline"></mspace><msub><mi>K</mi><mi>c</mi></msub><mo>=</mo><mo> </mo><mi>A</mi><mi>n</mi><mi>t</mi><mi>i</mi><mi>log</mi><mo> </mo><mo>(</mo><mn>34</mn><mo>.</mo><mn>501</mn><mo>)</mo><mo> </mo><mo>=</mo><mn>3</mn><mo>.</mo><mn>17</mn><mo> </mo><mo>×</mo><mo> </mo><msup><mn>10</mn><mn>34</mn></msup></math></p></div>


tags: ['Chemistry', 'Electrochemistry']
options: None
correct_option: None
source_db: MarksBatch1_P2.db
title:
calculate-the-standard-cell-potentials-of-galvanic-cell-in-which-the-following-reactions-take-place-i-2-mathrmcrs3-mathrmcd2a-q-longrightarrow-2-mathr

slug:
calculate-the-standard-cell-potentials-of-galvanic-cell-in-which-the-following-reactions-take-place-i-2-mathrmcrs3-mathrmcd2a-q-longrightarrow-2-mathr-46191

question:
<div class="question">Calculate the standard cell potentials of galvanic cell in which the following reactions take place<br/>(i) \(2 \mathrm{Cr}(s)+3 \mathrm{Cd}^{2+}(a q) \longrightarrow 2 \mathrm{Cr}^{3+}(a q)+3 \mathrm{Cd}(s)\)<br/>(ii) \(\mathrm{Fe}^{2+}(a q)+\mathrm{Ag}^{+}(a q) \longrightarrow \mathrm{Fe}^{3+}(a q)+\mathrm{Ag}(s)\)<br/>\(\mathrm{E}_{\mathrm{Cd}^{2+}, \mathrm{Cd}}^{\circ}=-0.40 \mathrm{~V}\),<br/>\(\mathrm{E}_{\mathrm{Ag}^{+}, \mathrm{Ag}}^{\circ}=\mathbf{0 . 8 0 \mathrm { V } ,} \mathrm{E}_{\mathrm{Fe}^{3+}}^{\circ}, \mathrm{Fe}^{2+}=0.77 \mathrm{~V}\).<br/>Calculate the \(\Delta_r G^{\circ}\) and equilibrium constant of the reactions.</div>

answer:
<div class="solution">(i) \(\quad \mathrm{E}_{\text {cell }}^0=\mathrm{E}_{\text {cathode }}^{\circ}-\mathrm{E}_{\text {anode }}^{\circ}\)<br/>\(\begin{aligned}<br/>&amp;=-0.40 \mathrm{~V}-(-0.74 \mathrm{~V})=+0.34 \mathrm{~V} \\<br/>&amp;\Delta_{\mathrm{r}} \mathrm{G}^{\circ}=-\mathrm{nFE}_{\text {cell }}^{\circ} \\<br/>&amp;=-6 \times 96500 \mathrm{C} \mathrm{mol}^{-1} \times 0.34 \mathrm{~V} \\<br/>&amp;=-196860 \mathrm{C} \mathrm{V} \mathrm{mol}^{-1} \\<br/>&amp;=-196860 \mathrm{~J} \mathrm{~mol}^{-1}=-196.86 \mathrm{~kJ} \mathrm{~mol}{ }^{-1} \\<br/>&amp;-\Delta_{\mathrm{r}} \mathrm{G}^{\circ}=2.303 \mathrm{RT} \operatorname{log~K} \\<br/>&amp;196860=2.303 \times 8.314 \times 298 \operatorname{log~K} \\<br/>&amp;\text { or } \quad \log \mathrm{K}=34.5014 \\<br/>&amp;\mathrm{~K}=\text { Antilog } 34.5014=3.172 \times 10^{34}<br/>\end{aligned}\)<br/>(ii) \(\mathrm{E}_{\text {cell }}^0=+0.80 \mathrm{~V}-0.77 \mathrm{~V}=+0.03 \mathrm{~V}\)<br/>\(\begin{aligned}<br/>&amp;\Delta_r G^{\circ}=-\mathrm{nFE}_{\text {cell }}^{\circ} \\<br/>&amp;=-1 \times\left(96500 \mathrm{C} \mathrm{mol}^{-1}\right) \times(0.03 \mathrm{~V}) \\<br/>&amp;=-2895 \mathrm{C} \mathrm{V} \mathrm{mol}^{-1}=-2895 \mathrm{~J} \mathrm{~mol}^{-1} \\<br/>&amp;=-2.895 \mathrm{~kJ} \mathrm{~mol}^{-1} \\<br/>&amp;\Delta_{\mathrm{r}} \mathrm{G}^{\circ}=-2.303 \mathrm{RT} \operatorname{log~K} \\<br/>&amp;-2895=-2.303 \times 8.314 \times 298 \times \operatorname{log~K} \\<br/>&amp;\text { or } \operatorname{log~K}=0.5074 \\<br/>&amp;\text { or } \mathrm{K}=\text { Antilog }(0.5074)=3.22 .<br/>\end{aligned}\)</div>


tags: ['Chemistry', 'Electrochemistry', 'JEE Main']
source_db: MarksBatch1_P2.db
title:
calculate-the-standard-electrode-potential-e-o-for-f-e-e-f-e-from-the-given-standard-electrode-potentials-value-of-two-half-cells-f-e-2-e-f-e-e-o-0440

slug:
calculate-the-standard-electrode-potential-e-o-for-f-e-e-f-e-from-the-given-standard-electrode-potentials-value-of-two-half-cells-f-e-2-e-f-e-e-o-0440-46883

question:
<div class="question">Calculate the standard electrode potential <math><mfenced separators="|"><mrow><msup><mrow><mi mathvariant="normal">E</mi></mrow><mrow><mi mathvariant="normal">o</mi></mrow></msup></mrow></mfenced></math> for<br/> <br/> <math><mi mathvariant="normal">F</mi><msup><mrow><mi mathvariant="normal">e</mi></mrow><mrow><mo>+</mo><mo>+</mo><mo>+</mo></mrow></msup><mo>+</mo><msup><mrow><mi mathvariant="normal">e</mi></mrow><mrow><mo>-</mo></mrow></msup><mo>â</mo><mi mathvariant="normal">F</mi><msup><mrow><mi mathvariant="normal">e</mi></mrow><mrow><mo>+</mo><mo>+</mo></mrow></msup></math><br/> <br/>
From the given standard electrode potentials value of two half cells<br/> <br/> <math><mi mathvariant="normal">F</mi><msup><mrow><mi mathvariant="normal">e</mi></mrow><mrow><mo>+</mo><mo>+</mo></mrow></msup><mo>+</mo><mn>2</mn><msup><mrow><mi mathvariant="normal">e</mi></mrow><mrow><mo>-</mo></mrow></msup><mo>â</mo><mi mathvariant="normal">F</mi><mi mathvariant="normal">e</mi><mo>â</mo><mo>;</mo><mo>â</mo><msup><mrow><mi mathvariant="normal">E</mi></mrow><mrow><mi mathvariant="normal">o</mi></mrow></msup><mo>=</mo><mo>-</mo><mtext>0.440</mtext><mo>â</mo><mi mathvariant="normal">V</mi></math><br/> <br/> <math><mi mathvariant="normal">F</mi><msup><mrow><mi mathvariant="normal">e</mi></mrow><mrow><mo>+</mo><mo>+</mo><mo>+</mo></mrow></msup><mo>+</mo><mn>3</mn><msup><mrow><mi mathvariant="normal">e</mi></mrow><mrow><mo>-</mo></mrow></msup><mo>â</mo><mi mathvariant="normal">F</mi><mi mathvariant="normal">e</mi><mo>â</mo><mo>;</mo><mo>â</mo><msup><mrow><mi mathvariant="normal">E</mi></mrow><mrow><mi mathvariant="normal">o</mi></mrow></msup><mo>=</mo><mo>-</mo><mtext>0.036</mtext><mo>â</mo><mi mathvariant="normal">V</mi></math></div>

options:
<ul class="options"> <li class="correct"> <span class="option-label">A</span> <span class="option-data"><math> <mrow> <mtext>+ 0</mtext><mtext>.772</mtext><mtext> </mtext><mtext>V</mtext></mrow></math></span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li><li class=""> <span class="option-label">B</span> <span class="option-data"><math> <mrow> <mtext>– 0</mtext><mtext>.404</mtext><mtext> </mtext><mtext>V</mtext></mrow></math></span> </li><li class=""> <span class="option-label">C</span> <span class="option-data"><math> <mrow> <mtext>+ 0</mtext><mtext>.404</mtext><mtext> </mtext><mtext>V</mtext></mrow></math></span> </li><li class=""> <span class="option-label">D</span> <span class="option-data"><math> <mrow> <mtext>– 0</mtext><mtext>.476</mtext><mtext> </mtext><mtext>V</mtext></mrow></math></span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value"><math> <mrow> <mtext>+ 0</mtext><mtext>.772</mtext><mtext> </mtext><mtext>V</mtext></mrow></math></span> </div>

answer:
<div class="solution"><math><mi mathvariant="normal">Î</mi><msup><mrow><mi mathvariant="normal">G</mi></mrow><mrow><mi mathvariant="normal">o</mi></mrow></msup><mo>=</mo><mo>-</mo><mi mathvariant="normal">n</mi><msup><mrow><mi mathvariant="normal">E</mi></mrow><mrow><mi mathvariant="normal">o</mi></mrow></msup><mi mathvariant="normal">F</mi></math><br/><br/><math><mi mathvariant="normal">F</mi><msup><mrow><mi mathvariant="normal">e</mi></mrow><mrow><mn>2</mn><mo>+</mo></mrow></msup><mo>+</mo><mn>2</mn><msup><mrow><mi mathvariant="normal">e</mi></mrow><mrow><mo>-</mo></mrow></msup><mo>â</mo><mi mathvariant="normal">F</mi><mi mathvariant="normal">e</mi></math> .....(i)<br/><br/><math><mi mathvariant="normal">Î</mi><msup><mrow><mi mathvariant="normal">G</mi></mrow><mrow><mi mathvariant="normal">o</mi></mrow></msup><mo>=</mo><mo>-</mo><mn>2</mn><mo>Ã</mo><mi mathvariant="normal">F</mi><mo>Ã</mo><mo>(</mo><mo>-</mo><mtext>0.440</mtext><mo>â</mo><mi mathvariant="normal">V</mi><mo>)</mo><mo>=</mo><mtext>0.880</mtext><mo>â</mo><mi mathvariant="normal">F</mi></math><br/><br/><math><mi mathvariant="normal">F</mi><msup><mrow><mi mathvariant="normal">e</mi></mrow><mrow><mn>3</mn><mo>+</mo></mrow></msup><mo>+</mo><mn>3</mn><msup><mrow><mi mathvariant="normal">e</mi></mrow><mrow><mo>-</mo></mrow></msup><mo>â</mo><mi mathvariant="normal">F</mi><mi mathvariant="normal">e</mi></math> .....(ii)<br/><br/><math> <mrow> <msup> <mrow> <mtext>ΔG</mtext></mrow> <mtext>o</mtext> </msup> <mo>=</mo><mo>−</mo><mn>3</mn><mo>×</mo><mtext>F</mtext><mo>×</mo><mfenced> <mrow> <mo>−</mo><mtext>0</mtext><mtext>.036</mtext></mrow> </mfenced><mo>=</mo><mtext>0</mtext><mtext>.108</mtext><mtext> </mtext><mtext>F</mtext></mrow></math><br/><br/>On subtracting equation (i) from (ii)<br/><br/><math><mi mathvariant="normal">F</mi><msup><mrow><mi mathvariant="normal">e</mi></mrow><mrow><mn>3</mn><mo>+</mo></mrow></msup><mo>+</mo><msup><mrow><mi mathvariant="normal">e</mi></mrow><mrow><mo>-</mo></mrow></msup><mo>â</mo><mi mathvariant="normal">F</mi><msup><mrow><mi mathvariant="normal">e</mi></mrow><mrow><mn>2</mn><mo>+</mo></mrow></msup></math><br/><br/><math> <mrow> <msup> <mrow> <mtext>ΔG</mtext></mrow> <mtext>o</mtext> </msup> <mo>=</mo><mtext>0</mtext><mtext>.108</mtext><mtext> </mtext><mtext>F</mtext><mo>−</mo><mtext>0</mtext><mtext>.880</mtext><mtext> </mtext><mtext>F</mtext><mo>=</mo><mo>−</mo><mtext>0</mtext><mtext>.772</mtext><mtext> </mtext><mtext>F</mtext></mrow></math><br/><br/><math><msup><mrow><mi mathvariant="normal">E</mi></mrow><mrow><mi mathvariant="normal">o</mi></mrow></msup></math> for the reaction <math><mo>=</mo><mo>-</mo><mfrac><mrow><mi mathvariant="normal">Î</mi><msup><mrow><mi mathvariant="normal">G</mi></mrow><mrow><mi mathvariant="normal">o</mi></mrow></msup></mrow><mrow><mi mathvariant="normal">n</mi><mi mathvariant="normal">F</mi></mrow></mfrac><mo>=</mo><mo>-</mo><mfrac><mrow><mo>(</mo><mo>-</mo><mo>â</mo><mtext>0.772</mtext><mo>â</mo><mi mathvariant="normal">F</mi><mo>)</mo></mrow><mrow><mn>1</mn><mo>Ã</mo><mi mathvariant="normal">F</mi></mrow></mfrac><mtext>=+</mtext><mo>â</mo><mtext>0.772</mtext><mo>â</mo><mi mathvariant="normal">V</mi></math></div>


tags: ['Chemistry', 'Solutions', 'NEET']
source_db: MarksBatch1_P2.db
title:
calculate-the-standard-enthalpy-change-in-kj-m-o-l-1-for-the-reaction-h-2-g-o-2-g-h-2-o-2-g-given-that-bond-enthalpies-of-h-h-o-o-o-h-and-o-o-in-k-j-m

slug:
calculate-the-standard-enthalpy-change-in-kj-m-o-l-1-for-the-reaction-h-2-g-o-2-g-h-2-o-2-g-given-that-bond-enthalpies-of-h-h-o-o-o-h-and-o-o-in-k-j-m-68217

question:
<div class="question">Calculate the standard enthalpy change (in kJ <math><mi mathvariant="normal">m</mi><mi mathvariant="normal">o</mi><msup><mrow><mi mathvariant="normal">l</mi></mrow><mrow><mo>-</mo><mn>1</mn></mrow></msup></math> ) for the reaction, <math><msub><mrow><mi mathvariant="normal">H</mi></mrow><mrow><mn>2</mn></mrow></msub><mo>(</mo><mi mathvariant="normal">g</mi><mo>)</mo><mo>+</mo><msub><mrow><mi mathvariant="normal">O</mi></mrow><mrow><mn>2</mn></mrow></msub><mo>(</mo><mi mathvariant="normal">g</mi><mo>)</mo><mo>â</mo><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><mo>(</mo><mi mathvariant="normal">g</mi><mo>)</mo></math> , given, that bond enthalpies of <math><mi mathvariant="normal">H</mi><mo>â</mo><mi mathvariant="normal">H</mi><mo>,</mo><mi mathvariant="normal">O</mi><mo>=</mo><mi mathvariant="normal">O</mi><mo>,</mo><mi mathvariant="normal">O</mi><mo>â</mo><mi mathvariant="normal">H</mi></math> and <math><mi mathvariant="normal">O</mi><mo>â</mo><mi mathvariant="normal">O</mi></math> (in <math><mi mathvariant="normal">k</mi><mi mathvariant="normal">J</mi></math> <math><mi mathvariant="normal">m</mi><mi mathvariant="normal">o</mi><msup><mrow><mi mathvariant="normal">l</mi></mrow><mrow><mo>-</mo><mn>1</mn></mrow></msup></math> ) are respectively 438, 498, 464 and 138</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data"><math><mo>-</mo><mn>334</mn></math></span> </li><li class="correct"> <span class="option-label">B</span> <span class="option-data"><math><mo>-</mo><mn>130</mn></math></span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li><li class=""> <span class="option-label">C</span> <span class="option-data"><math><mo>+</mo><mn>334</mn></math></span> </li><li class=""> <span class="option-label">D</span> <span class="option-data"><math><mo>+</mo><mn>130</mn></math></span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value"><math><mo>-</mo><mn>130</mn></math></span> </div>

answer:
<div class="solution"><math><msub><mrow><mi mathvariant="normal">H</mi></mrow><mrow><mn>2</mn></mrow></msub><mo>(</mo><mi mathvariant="normal">g</mi><mo>)</mo><mo>+</mo><msub><mrow><mi mathvariant="normal">O</mi></mrow><mrow><mn>2</mn></mrow></msub><mo>(</mo><mi mathvariant="normal">g</mi><mo>)</mo><mo>â</mo><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><mo>(</mo><mi mathvariant="normal">g</mi><mo>)</mo></math> <br/><math><mi mathvariant="normal">Î</mi><msub><mrow><mi mathvariant="normal">H</mi></mrow><mrow><mi mathvariant="normal">r</mi><mi mathvariant="normal">e</mi><mi mathvariant="normal">a</mi><mi mathvariant="normal">c</mi><mi mathvariant="normal">t</mi><mi mathvariant="normal">i</mi><mi mathvariant="normal">o</mi><mi mathvariant="normal">n</mi></mrow></msub><mo>=</mo><mi mathvariant="normal">B</mi><mo>.</mo><mi mathvariant="normal">E</mi><msub><mrow><mo>.</mo></mrow><mrow><mi mathvariant="normal">R</mi><mi mathvariant="normal">e</mi><mi mathvariant="normal">a</mi><mi mathvariant="normal">c</mi><mi mathvariant="normal">t</mi><mi mathvariant="normal">a</mi><mi mathvariant="normal">n</mi><mi mathvariant="normal">t</mi><mi mathvariant="normal">s</mi></mrow></msub><mo>-</mo><mi mathvariant="normal">B</mi><mo>.</mo><mi mathvariant="normal">E</mi><msub><mrow><mo>.</mo></mrow><mrow><mi mathvariant="normal">p</mi><mi mathvariant="normal">r</mi><mi mathvariant="normal">o</mi><mi mathvariant="normal">d</mi><mi mathvariant="normal">u</mi><mi mathvariant="normal">c</mi><mi mathvariant="normal">t</mi><mi mathvariant="normal">s</mi></mrow></msub></math> <br/><math><mo>=</mo><mo>[</mo><mi mathvariant="normal">B</mi><mo>.</mo><mi mathvariant="normal">E</mi><mo>.</mo><mo>(</mo><mi mathvariant="normal">H</mi><mo>-</mo><mi mathvariant="normal">H</mi><mo>)</mo><mo>+</mo><mi mathvariant="normal">B</mi><mo>.</mo><mi mathvariant="normal">E</mi><mo>.</mo><mo>(</mo><mi mathvariant="normal">O</mi><mo>=</mo><mi mathvariant="normal">O</mi><mo>)</mo><mo>]</mo><mo>-</mo><mo>[</mo><mn>2</mn><mi mathvariant="normal">B</mi><mo>.</mo><mi mathvariant="normal">E</mi><mo>.</mo><mo>(</mo><mi mathvariant="normal">O</mi><mo>-</mo><mi mathvariant="normal">H</mi><mo>)</mo><mo>+</mo><mi mathvariant="normal">B</mi><mo>.</mo><mi mathvariant="normal">E</mi><mo>.</mo><mo>(</mo><mi mathvariant="normal">O</mi><mo>-</mo><mi mathvariant="normal">O</mi><mo>)</mo><mo>]</mo></math> <br/><math><mo>=</mo><mfenced close="]" open="[" separators="|"><mrow><mn>438</mn><mo>+</mo><mn>498</mn></mrow></mfenced><mo>â</mo><mfenced close="]" open="[" separators="|"><mrow><mn>2</mn><mo>Ã</mo><mn>464</mn><mo>+</mo><mn>138</mn></mrow></mfenced><mo>=</mo><mn>936</mn><mo>â</mo><mn>1066</mn><mo>=</mo><mo>-</mo><mn>130</mn></math> <math><mi mathvariant="normal">k</mi><mi mathvariant="normal">J</mi><mi mathvariant="normal">m</mi><mi mathvariant="normal">o</mi><msup><mrow><mi mathvariant="normal">l</mi></mrow><mrow><mo>-</mo><mn>1</mn></mrow></msup></math></div>


tags: ['Chemistry', 'Thermodynamics (C)', 'NEET']
answer: <div class="solution">Correct Option is : (D)<br/>â239 kJ mol<sup>â1</sup></div>
source_db: MarksBatch1_P2.db
title:
calculate-the-standard-enthalpy-of-formation-of-ch-3-ohl-from-the-following-data-ch-3-oh-l-32-o-2-g-co-2-g-2h-2-ol-r-h-726-kj-mol-1-cgraphite-o-2-g-co

slug:
calculate-the-standard-enthalpy-of-formation-of-ch-3-ohl-from-the-following-data-ch-3-oh-l-32-o-2-g-co-2-g-2h-2-ol-r-h-726-kj-mol-1-cgraphite-o-2-g-co-29435

question:
<div class="question">Calculate the standard enthalpy of formation of CH<sub>3</sub>OH(l) from the following data:   CH<sub>3</sub>OH (l) + 3/2 O<sub>2</sub>(g) â CO<sub>2</sub>(g) + 2H<sub>2</sub>O(l) ; â<sub>r</sub>H<sup>â</sup>= â726 kJ mol<sup>â1</sup>C(graphite) + O<sub>2</sub>(g) â CO<sub>2</sub>(g) ; â<sub>c</sub>H<sup>â</sup>= â393 kJ mol<sup>â1</sup>H<sub>2</sub>(g) + 1/2 O<sub>2</sub>(g) â H<sub>2</sub>O(l) ; â<sub>f</sub>H<sup>â</sup>= â286 kJ mol<sup>â1</sup></div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">â390 kJ mol<sup>â1</sup></span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">â265 kJ mol<sup>â1</sup></span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">â324 kJ mol<sup>â1</sup></span> </li><li class="correct"> <span class="option-label">D</span> <span class="option-data">â239 kJ mol<sup>â1</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">â239 kJ mol<sup>â1</sup></span> </div>


tags: ['Chemistry', 'Thermodynamics (C)']
options: None
correct_option: None
source_db: MarksBatch1_P2.db
title:
calculate-the-standard-enthalpy-of-formation-of-mathrmch3-mathrmohl-from-the-following-data-i-mathrmch3-mathrmohlfrac32-mathrmo2-g-longrightarrow-math

slug:
calculate-the-standard-enthalpy-of-formation-of-mathrmch3-mathrmohl-from-the-following-data-i-mathrmch3-mathrmohlfrac32-mathrmo2-g-longrightarrow-math-13055

question:
<div class="question">Calculate the standard enthalpy of formation of \(\mathrm{CH}_3 \mathrm{OH}(l)\) from the following data :<br/>(i) \(\mathrm{CH}_3 \mathrm{OH}(l)+\frac{3}{2} \mathrm{O}_2\) (g) \(\longrightarrow \mathrm{CO}_2(\mathrm{~g})+2 \mathrm{H}_2 \mathrm{O}(l)\); \(\Delta_{\mathrm{r}} \mathbf{H}^{\circ}=-726 \mathrm{~kJ} \mathrm{~mol}^{-1}\)<br/>(ii) \(\mathrm{C}\) (graphite) \(+\mathrm{O}_2(\mathrm{~g}) \longrightarrow \mathrm{CO}_2(\mathrm{~g})\); \(\Delta_{\mathrm{c}} \mathbf{H}^{\circ}=-393 \mathbf{k J ~ m o l}^{-1}\)<br/>(iii) \(\mathrm{H}_2(\mathrm{~g})+\frac{1}{2} \mathrm{O}_2\) (g) \(\longrightarrow \mathrm{H}_2 \mathrm{O}(l)\); \(\Delta_{\mathrm{f}} \mathrm{H}^{\circ}=-286 \mathrm{~kJ} \mathrm{~mol}^{-1}\).</div>

answer:
<div class="solution">Aim : \(\mathrm{C}(\mathrm{s})+2 \mathrm{H}_2(\mathrm{~g})+\frac{1}{2} \mathrm{O}_2(\mathrm{~g}) \longrightarrow \mathrm{CH}_3 \mathrm{OH}(\ell), \Delta_{\mathrm{f}} \mathrm{H}^{\circ}=\) ? Eqn. (ii) \(+2 \times\) Eqn. (iii) \(-\) Eqn. (i) gives the required eqn. with<br/>\(\Delta \mathrm{H}=-393+2(-286)-(-726) \mathrm{kJ} \mathrm{mol}^{-1}\) \(=-239 \mathrm{~kJ} \mathrm{~mol}^{-1}\)</div>


tags: ['Chemistry', 'Electrochemistry', 'NEET']
source_db: MarksBatch1_P2.db
title:
calculate-the-standard-gibbs-energy-r-g-for-the-reaction-zns-cuaq-znaq-cus-the-standard-electrode-potential-is-11v

slug:
calculate-the-standard-gibbs-energy-r-g-for-the-reaction-zns-cuaq-znaq-cus-the-standard-electrode-potential-is-11v-84265

question:
<div class="question">Calculate the standard Gibbs energy (Î<sub>r</sub>G) for the reaction: Zn(s) +  CuÂ²âº(aq) â ZnÂ²âº(aq) + Cu(s). The standard electrode  potential is 1.1V.</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">-100.15 kJ mol-1</span> </li><li class="correct"> <span class="option-label">B</span> <span class="option-data">-212.27 kJ 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">55.34 kJ mol-1</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">0.85 kJ mol-1</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">-212.27 kJ mol-1</span> </div>

answer:
<div class="solution">The standard Gibbs energy (Î<sub>r</sub>G) can be calculated using the equation Î<sub>r</sub>G = -nFEo, where 'n' is the number of moles of electrons transferred, 'F' is the Faraday constant(96487 C mol-1), and 'Eo' is the standard electrode potential. In this case, 'n' is 2 (since two moles of electrons are involved in the balanced reaction), and 'Eo' is 1.1 V (as provided in the information). Therefore, Î<sub>r</sub>G â -212.27  kJmol-1.</div>


tags: ['Chemistry', 'Electrochemistry', 'NEET']
source_db: MarksBatch1_P2.db
title:
calculate-the-standard-potential-of-the-cell-if-the-standard-electrode-potentials-of-z-n-2-z-n-and-a-g-a-g-are-0763-v-and-0799-v-respectively

slug:
calculate-the-standard-potential-of-the-cell-if-the-standard-electrode-potentials-of-z-n-2-z-n-and-a-g-a-g-are-0763-v-and-0799-v-respectively-35686

question:
<div class="question">Calculate the standard potential of the cell, if the standard electrode potentials of <math><mi mathvariant="normal">Z</mi><msup><mrow><mi mathvariant="normal">n</mi></mrow><mrow><mn>2</mn><mo>+</mo></mrow></msup><mo>/</mo><mi mathvariant="normal">Z</mi><mi mathvariant="normal">n</mi></math> and <math><mi mathvariant="normal">A</mi><msup><mrow><mi mathvariant="normal">g</mi></mrow><mrow><mo>+</mo></mrow></msup><mo>/</mo><mi mathvariant="normal">A</mi><mi mathvariant="normal">g</mi></math> are <math><mo>-</mo><mo>â</mo><mtext>0.763</mtext><mo>â</mo><mi mathvariant="normal">V</mi></math> and <math><mo>+</mo><mo>â</mo><mtext>0.799</mtext><mo>â</mo><mi mathvariant="normal">V</mi></math> respectively.</div>

options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data"><math><mtext>0.036V</mtext></math></span> </li><li class="correct"> <span class="option-label">B</span> <span class="option-data"><math><mtext>1.56V</mtext></math></span> <svg fill="none" height="24" viewbox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"> <path d="M12 2.25C10.0716 2.25 8.18657 2.82183 6.58319 3.89317C4.97982 4.96452 3.73013 6.48726 2.99218 8.26884C2.25422 10.0504 2.06114 12.0108 2.43735 13.9021C2.81355 15.7934 3.74215 17.5307 5.10571 18.8943C6.46928 20.2579 8.20656 21.1865 10.0979 21.5627C11.9892 21.9389 13.9496 21.7458 15.7312 21.0078C17.5127 20.2699 19.0355 19.0202 20.1068 17.4168C21.1782 15.8134 21.75 13.9284 21.75 12C21.7473 9.41498 20.7192 6.93661 18.8913 5.10872C17.0634 3.28084 14.585 2.25273 12 2.25ZM16.2806 10.2806L11.0306 15.5306C10.961 15.6004 10.8783 15.6557 10.7872 15.6934C10.6962 15.7312 10.5986 15.7506 10.5 15.7506C10.4014 15.7506 10.3038 15.7312 10.2128 15.6934C10.1218 15.6557 10.039 15.6004 9.96938 15.5306L7.71938 13.2806C7.57865 13.1399 7.49959 12.949 7.49959 12.75C7.49959 12.551 7.57865 12.3601 7.71938 12.2194C7.86011 12.0786 8.05098 11.9996 8.25 11.9996C8.44903 11.9996 8.6399 12.0786 8.78063 12.2194L10.5 13.9397L15.2194 9.21937C15.2891 9.14969 15.3718 9.09442 15.4628 9.0567C15.5539 9.01899 15.6515 8.99958 15.75 8.99958C15.8486 8.99958 15.9461 9.01899 16.0372 9.0567C16.1282 9.09442 16.2109 9.14969 16.2806 9.21937C16.3503 9.28906 16.4056 9.37178 16.4433 9.46283C16.481 9.55387 16.5004 9.65145 16.5004 9.75C16.5004 9.84855 16.481 9.94613 16.4433 10.0372C16.4056 10.1282 16.3503 10.2109 16.2806 10.2806Z" fill="#24A865"></path> </svg> </li><li class=""> <span class="option-label">C</span> <span class="option-data"><math><mtext>-1.562V</mtext></math></span> </li><li class=""> <span class="option-label">D</span> <span class="option-data"><math><mtext>0.799V</mtext></math></span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value"><math><mtext>1.56V</mtext></math></span> </div>

answer:
<div class="solution"><math><msubsup><mrow><mi mathvariant="normal">E</mi></mrow><mrow><mtext>cell</mtext></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><mtext>anode</mtext></mrow><mrow><mi mathvariant="normal">o</mi></mrow></msubsup></math> <br/>= <math><mtext>0.799</mtext><mo>-</mo><mo>(</mo><mo>-</mo><mtext>0.763</mtext><mo>)</mo><mo>=</mo><mtext>1.562</mtext></math> V</div>


title: cam-helps-the-plants-in-1
slug: cam-helps-the-plants-in-1-11854
question: <div class="question">CAM helps the plants in</div>
tags: ['Biology', 'Transport in Plants', 'NEET', 'NEET 2011 (Screening)']
source_db: MarksBatch1_P2.db
options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">secondary growth</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">disease resistance</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">reproduction</span> </li><li class="correct"> <span class="option-label">D</span> <span class="option-data">conserving water</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">conserving water</span> </div>

answer:
<div class="solution">CAM plants are mostly succulent xerophytes. The stomata in these plants remain closed during the day. This helps to check the transpiration. In this way, water is conserved.</div>


title: cam-helps-the-plants-in
slug: cam-helps-the-plants-in-17803
question: <div class="question">CAM helps the plants in:</div>
tags: ['Biology', 'Photosynthesis in Higher Plants', 'NEET']
source_db: MarksBatch1_P2.db
options:
<ul class="options"> <li class="correct"> <span class="option-label">A</span> <span class="option-data">Conserving water</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 growth</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">Disease resistance</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">Reproduction</span> </li> </ul>

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

answer:
<div class="solution">CAM plants are most common in arid environments. Being able to keep stomata closed during the hottest and driest part of the day reduces the loss of water through evapotranspiration.</div>


title: can-a-body-possess-inertia-without-having-weight
slug: can-a-body-possess-inertia-without-having-weight-63912
question: <div class="question">Can a body possess inertia without having weight?</div>
tags: ['Chemistry', 'Gravitation', 'NEET']
source_db: MarksBatch1_P2.db
options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">No, as weight is a fundamental property of matter.</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">Yes, only in a vacuum environment.</span> </li><li class="correct"> <span class="option-label">C</span> <span class="option-data">Yes, in conditions where the gravitational force acting on it is zero.</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">No, inertia and weight are directly proportional properties.</span> </li> </ul>

correct_option:
<div class="correct-answer">
The correct answer is:
<span class="option-value">Yes, in conditions where the gravitational force acting on it is zero.</span> </div>

answer:
<div class="solution">Correct Option is : (C)<br/>Yes, in conditions where the gravitational force acting on it is zero.</div>


title: can-a-given-organism-occupy-more-than-one-trophic-level-simultaneously
slug: can-a-given-organism-occupy-more-than-one-trophic-level-simultaneously-39805
question: <div class="question">Can a given organism occupy more than one trophic level simultaneously?</div>
tags: ['Biology', 'Ecosystem', 'NEET']
correct_option: <div class="correct-answer"> The correct answer is: <span class="option-value">Yes</span> </div>
source_db: MarksBatch1_P2.db
options:
<ul class="options"> <li class="correct"> <span class="option-label">A</span> <span class="option-data">Yes</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">No</span> </li><li class=""> <span class="option-label">C</span> <span class="option-data">Sometimes</span> </li><li class=""> <span class="option-label">D</span> <span class="option-data">It depends on the ecosystem</span> </li> </ul>

answer:
<div class="solution">A given organism may occupy more than one trophic level simultaneously, for example, a sparrow may be a primary consumer when it eats seeds, fruits and peas and a secondary consumer when it eats insects and worms.</div>


title: can-competition-occur-between-unrelated-species
slug: can-competition-occur-between-unrelated-species-52523
question: <div class="question">Can competition occur between unrelated species?</div>
tags: ['Biology', 'Organisms and Populations', 'NEET']
correct_option: <div class="correct-answer"> The correct answer is: <span class="option-value">Yes</span> </div>
source_db: MarksBatch1_P2.db
options:
<ul class="options"> <li class=""> <span class="option-label">A</span> <span class="option-data">No</span> </li><li class=""> <span class="option-label">B</span> <span class="option-data">Only if resources are abundant</span> </li><li class="correct"> <span class="option-label">C</span> <span class="option-data">Yes</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">Only if resources are limiting</span> </li> </ul>

answer:
<div class="solution">Competition can occur between unrelated species, where visiting flamingoes and resident fishes compete for their common food in shallow South American lakes.</div>


