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joVTXbxTEZBU5iAeTql4A | chemistry | biomolecules | carbohydrates | The <b>incorrect</b> statement among the following is : | [{"identifier": "A", "content": "$$\\alpha $$-D-glucose and $$\\beta $$-D-glucose are anomers."}, {"identifier": "B", "content": "$$\\alpha $$-D-glucose and $$\\beta $$-D-glucose are enantiomers.\n"}, {"identifier": "C", "content": "Cellulose is a straight chain polysaccharide made up of only $$\\beta $$-D-glucose unit... | ["B"] | null | $$\alpha $$-D-glucose and $$\beta $$-D-glucose are anomers not enantiomers. | mcq | jee-main-2017-online-9th-april-morning-slot | 619 |
6vtDB7CTzoMoJOL3oO3rsa0w2w9jx0uhb35 | chemistry | biomolecules | carbohydrates | Number of stereo centers present in linear and cyclic structures of glucose are respectively : | [{"identifier": "A", "content": "4 & 4\n"}, {"identifier": "B", "content": "4 & 5"}, {"identifier": "C", "content": "5 & 4"}, {"identifier": "D", "content": "5 & 5"}] | ["B"] | null | <picture><source media="(max-width: 320px)" srcset="https://res.cloudinary.com/dckxllbjy/image/upload/v1734266004/exam_images/rklecxyhzqiwkfbnocwr.webp"><img src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734264929/exam_images/xrhv9lo4oyr0irzrtng5.webp" style="max-width: 100%;height: auto;display: block;margi... | mcq | jee-main-2019-online-10th-april-evening-slot | 625 |
ZaXj9ZOX5MNxtwNjw6lES | chemistry | biomolecules | carbohydrates | Fructose and glucose can be distinguished by : | [{"identifier": "A", "content": "Barfoed's test"}, {"identifier": "B", "content": "Fehling's test"}, {"identifier": "C", "content": "Seliwanoff's test"}, {"identifier": "D", "content": "Benedict's test"}] | ["C"] | null | Seliwanoff's test is used to distinguish aldose
and ketose.
<br><br>When Seliwanoff's reagent added to a solution containing ketoses, red colour is formed rapidly indicating a positive test.
<br>While in case of aldose, a slower forming light pink colour observed. | mcq | jee-main-2019-online-8th-april-evening-slot | 627 |
5rKtX9Wupmhw9vr0q7Mrk | chemistry | biomolecules | carbohydrates | Maltose on treatment with dilute HCI gives : | [{"identifier": "A", "content": "D-Galactose"}, {"identifier": "B", "content": "D-Glucose and D-Fructose"}, {"identifier": "C", "content": "D-Glucose"}, {"identifier": "D", "content": "D-Fructose"}] | ["C"] | null | Maltose on treatment with dil. HCl gives D-glucose. Hydrolysis of
maltose yields two moles of $$\alpha $$- D-glucose. Thus, it is composed of two $$\alpha $$-D-glucose units in
which C-1 of one glucose unit (I) is linked to C-4 of another
glucose unit (II). The free aldehyde group can be produced at C-1
of second gluco... | mcq | jee-main-2019-online-8th-april-morning-slot | 628 |
xn9nIBoi2hl0RxspRb7k9k2k5h6f056 | chemistry | biomolecules | carbohydrates | Which of the following statement is not true for glucose? | [{"identifier": "A", "content": "Glucose gives Schiff's test for aldehyde"}, {"identifier": "B", "content": "Glucosse reacts with hydroxylamine to form oxime"}, {"identifier": "C", "content": "The pentaacetate of glucose does not react with hydroxylamine to give oxime"}, {"identifier": "D", "content": "Glucose exists i... | ["A"] | null | Glucose gives negative test with Schiff reagent. | mcq | jee-main-2020-online-8th-january-morning-slot | 629 |
TZIEsWcPSEVUXC603sjgy2xukg0ls23c | chemistry | biomolecules | carbohydrates | Which one of the following statements is not
true? | [{"identifier": "A", "content": "Lactose contains $$\\alpha $$-glycosidic linkage\nbetween C<sub>1</sub> of galactose and C<sub>4</sub> of glucose"}, {"identifier": "B", "content": "Lactose is a reducing sugar and it gives\nFehling\u2019s test"}, {"identifier": "C", "content": "On acid hydrolysis, lactose gives one\nmo... | ["A"] | null | <img src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734265858/exam_images/g2vewlioy9hkevieokbl.webp" style="max-width: 100%;height: auto;display: block;margin: 0 auto;" loading="lazy" alt="JEE Main 2020 (Online) 6th September Evening Slot Chemistry - Biomolecules Question 99 English Explanation">
Lactose cont... | mcq | jee-main-2020-online-6th-september-evening-slot | 630 |
NYCi0MnMQgDtLE6Aesjgy2xukfqa1du2 | chemistry | biomolecules | carbohydrates | The number of chiral carbons present in
sucrose is _____. | [] | null | 9 | <picture><source media="(max-width: 320px)" srcset="https://res.cloudinary.com/dckxllbjy/image/upload/v1734264466/exam_images/xlz2uyh6aqgw62aj3gyd.webp"><img src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734265557/exam_images/awjn4cceqhen9phx63fe.webp" style="max-width: 100%;height: auto;display: block;margi... | integer | jee-main-2020-online-5th-september-evening-slot | 631 |
kmM8LnBf6Z55XpJT4ljgy2xukf7t0ok8 | chemistry | biomolecules | carbohydrates | What are the functional groups present in the
structure of maltose? | [{"identifier": "A", "content": "One acetal and one ketal"}, {"identifier": "B", "content": "One ketal and one hemiketal"}, {"identifier": "C", "content": "Two acetals"}, {"identifier": "D", "content": "One acetal and one hemiacetal"}] | ["D"] | null | <img src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734267465/exam_images/toagzqx3qxynspf9x2le.webp" style="max-width: 100%;height: auto;display: block;margin: 0 auto;" loading="lazy" alt="JEE Main 2020 (Online) 4th September Morning Slot Chemistry - Biomolecules Question 104 English Explanation">
<br><br>Mal... | mcq | jee-main-2020-online-4th-september-morning-slot | 632 |
ns57EPy8zTNahAFWQjjgy2xukeygwnbj | chemistry | biomolecules | carbohydrates | The correct observation in the following
reactions is :
<picture><source media="(max-width: 320px)" srcset="https://res.cloudinary.com/dckxllbjy/image/upload/v1734266107/exam_images/luefjv9rzuvop6vjmn7k.webp"/><img src="data:image/png;base64,UklGRtgVAABXRUJQVlA4IMwVAADwbwCdASqoAnwAPm00lkgkIqIhJFJ6kIANiWlu/HyYhW9nZ11fo1... | [{"identifier": "A", "content": "Formation of blue colour"}, {"identifier": "B", "content": "Formation of violet colour"}, {"identifier": "C", "content": "Formation of red colour"}, {"identifier": "D", "content": "Gives no colour"}] | ["C"] | null | Seliwanoff's test is used to distinguish between aldose and ketone sugars; when added to a solution
containing ketose, red colour is formed rapidly.
<br><img src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734266360/exam_images/r3iu5nfyyyqulrywiav5.webp" style="max-width: 100%;height: auto;display: block;margi... | mcq | jee-main-2020-online-2nd-september-evening-slot | 633 |
5mKUuQk25RkPbz6GJfjgy2xukevgx2oo | chemistry | biomolecules | carbohydrates | Consider the following rections:
<br/><img src="data:image/png;base64,UklGRr4UAABXRUJQVlA4ILIUAACQigCdASr0AU0BP4G61mU2LiqnIjC6UsAwCWlu/HRZVOtQ2f06/2H9x7p/+Z4j+fMJuh/nx7E+AK6rtEbRXUpyAPMvvp6B/FR/cPR8/PntdjT/tdTF7pNa2LmjnZOKASnuJiJha51A01reanWxloXvIj4X4mdwjry/iFFQ03wdShUvNKl49OwmnaP1DUzjybbEu8clnYvUASA4ZaRCyi6dn1jVDbRvJu... | [{"identifier": "A", "content": "5, 6, & 5"}, {"identifier": "B", "content": "4, 5 & 5"}, {"identifier": "C", "content": "4, 6 & 5"}, {"identifier": "D", "content": "5, 4 & 5 "}] | ["C"] | null | <picture><source media="(max-width: 320px)" srcset="https://res.cloudinary.com/dckxllbjy/image/upload/v1734266196/exam_images/vpmivhrjro9idvwwkcno.webp"><source media="(max-width: 500px)" srcset="https://res.cloudinary.com/dckxllbjy/image/upload/v1734263272/exam_images/pznjf86jagf9z9xv6m08.webp"><source media="(max-wid... | mcq | jee-main-2020-online-2nd-september-morning-slot | 634 |
931LtLVZBBbpfVSHyc7k9k2k5hlpczl | chemistry | biomolecules | carbohydrates | Two monomers in maltose are : | [{"identifier": "A", "content": "$$\\alpha $$-D-glucose and $$\\alpha $$-D-galactose"}, {"identifier": "B", "content": "$$\\alpha $$-D-glucose and $$\\alpha $$-D-Fructose"}, {"identifier": "C", "content": "$$\\alpha $$-D-glucose and $$\\alpha $$-D-glucose"}, {"identifier": "D", "content": "$$\\alpha $$-D-glucose and $$... | ["C"] | null | Two monomers in maltose are $$\alpha $$-D-glucose &
$$\alpha $$-D-glucose. | mcq | jee-main-2020-online-8th-january-evening-slot | 635 |
GX3vCjablV4iSUWTmP1kls919p2 | chemistry | biomolecules | carbohydrates | Which of the glycosidic linkage between galactose and glucose is present in lactose? | [{"identifier": "A", "content": "C-1 of galactose and C-6 of glucose"}, {"identifier": "B", "content": "C-1 of glucose and C-6 of galactose"}, {"identifier": "C", "content": "C-1 of galactose and C-4 of glucose"}, {"identifier": "D", "content": "C-1 of glucose and C-4 of galactose"}] | ["C"] | null | <p>Glycosidic linkage is a type of covalent bond that joins
carbohydrate molecules to another group.</p>
<p><img src="https://app-content.cdn.examgoal.net/fly/@width/image/1ldu08py6/dcba78d4-1e58-4ef2-a44f-a397bdd23983/e3e267e0-a6c4-11ed-8d92-0101c7cb78f8/file-1ldu08py7.png?format=png" data-orsrc="https://app-content.c... | mcq | jee-main-2021-online-25th-february-morning-slot | 637 |
QhI1shzNkBpOJbFhIg1kluslgus | chemistry | biomolecules | carbohydrates | Match List - I with List - II.<br/><br/><table style="width:100%">
<thead>
<tr>
<th></th>
<th>List - I </th>
<th></th>
<th>List - II</th>
</tr>
</thead>
<tbody>
<tr>
<td>(a)</td>
<td>Sucrose</td>
<td>(i)</td>
<td>$$\beta $$-D-Galactose and $$\beta $$-D-Glucose</td>
</tr>
<tr>
<td>(b)</td>
<td>Lactose</td>
<td>(ii)</td>... | [{"identifier": "A", "content": "(a) $$ \\to $$ (iii), (b) $$ \\to $$ (ii), (c) $$ \\to $$ (i)"}, {"identifier": "B", "content": "(a) $$ \\to $$ (i), (b) $$ \\to $$ (iii), (c) $$ \\to $$ (ii)"}, {"identifier": "C", "content": "(a) $$ \\to $$ (ii), (b) $$ \\to $$ (i), (c) $$ \\to $$ (iii)"}, {"identifier": "D", "content... | ["C"] | null | Sucrose $$ \to \alpha $$-D- Glucose and $$\beta $$-D- Fructose<br><br>
Lactose $$ \to \beta $$-D- Galactose and $$\beta $$-D- Glucose<br><br>
Maltose $$ \to \alpha $$-D- Glucose and $$\alpha $$-D- Glucose | mcq | jee-main-2021-online-26th-february-evening-slot | 639 |
dFwKahA2nUbtH4lwFC1kmki21jj | chemistry | biomolecules | carbohydrates | $${C_{12}}{H_{22}}{O_{11}} + {H_2}O\buildrel {Enzyme\,A} \over
\longrightarrow \mathop {{C_6}{H_{12}}{O_6}}\limits_{Glu\cos e} + \mathop {{C_6}{H_{12}}{O_6}}\limits_{Fructose} $$<br/><br/>$$\mathop {{C_6}{H_{12}}{O_6}}\limits_{Glu\cos e} \buildrel {Enzyme\,B} \over
\longrightarrow 2{C_2}{H_5}OH + 2C{O_2}$$<br/><br/>... | [{"identifier": "A", "content": "Zymase and Invertase"}, {"identifier": "B", "content": "Invertase and Amylase"}, {"identifier": "C", "content": "Amylase and Invertase"}, {"identifier": "D", "content": "Invertase and Zymase"}] | ["D"] | null | <img src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734263505/exam_images/gwlw57ojmbnmsky7x1dc.webp" style="max-width: 100%;height: auto;display: block;margin: 0 auto;" loading="lazy" alt="JEE Main 2021 (Online) 17th March Evening Shift Chemistry - Biomolecules Question 89 English Explanation"><br><br>$$ \the... | mcq | jee-main-2021-online-17th-march-evening-shift | 640 |
UACK82Cmm2rR7QsgIA1kmkj7wz5 | chemistry | biomolecules | carbohydrates | Fructose is an example of : | [{"identifier": "A", "content": "Heptose"}, {"identifier": "B", "content": "Pyranose"}, {"identifier": "C", "content": "Ketohexose"}, {"identifier": "D", "content": "Aldohexose"}] | ["C"] | null | Fructose contains ketone group so it is ketose.<br><br>
<img src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734266261/exam_images/tx6wrivwpr2e1w47suiu.webp" style="max-width: 100%;height: auto;display: block;margin: 0 auto;" loading="lazy" alt="JEE Main 2021 (Online) 17th March Evening Shift Chemistry - Biomo... | mcq | jee-main-2021-online-17th-march-evening-shift | 641 |
8HAgYyyXLFIMJAalcd1kmlmg8x6 | chemistry | biomolecules | carbohydrates | A non-reducing sugar "A" hydrolyses to give two reducing mono saccharides. Sugar A is | [{"identifier": "A", "content": "Fructose"}, {"identifier": "B", "content": "Galactose"}, {"identifier": "C", "content": "Glucose"}, {"identifier": "D", "content": "Sucrose"}] | ["D"] | null | Sucrose $$\buildrel {Hydrolyses} \over
\longrightarrow $$ glucose + fructose<br><br>
Glucose and fructose both are monosaccharides.
Sucrose is non-reducing sugar. | mcq | jee-main-2021-online-18th-march-morning-shift | 642 |
1krq68vqf | chemistry | biomolecules | carbohydrates | Identify the incorrect statement from the following | [{"identifier": "A", "content": "Amylose is a branched chain polymer of glucose"}, {"identifier": "B", "content": "Starch is a polymer of $$\\alpha$$-D glucose"}, {"identifier": "C", "content": "$$\\beta$$-Glycosidic linkage makes cellulose polymer"}, {"identifier": "D", "content": "Glycogen is called as animal starch"... | ["A"] | null | Amylose is a linear chain polymer of $$\alpha $$-D-glucose
while amylopectine is branched chain polymer of
$$\alpha $$-D-glucose. | mcq | jee-main-2021-online-20th-july-morning-shift | 643 |
1krz0znag | chemistry | biomolecules | carbohydrates | Which one among the following chemical tests is used to distinguish monosaccharide from disaccharide? | [{"identifier": "A", "content": "Seliwanoff's test"}, {"identifier": "B", "content": "Iodine test"}, {"identifier": "C", "content": "Barfoed test"}, {"identifier": "D", "content": "Tollen's test"}] | ["C"] | null | Barford test is used for distinguish monosaccharide from disaccharide. | mcq | jee-main-2021-online-27th-july-morning-shift | 644 |
1ktco1160 | chemistry | biomolecules | carbohydrates | Given below are two statements : one is labelled as Assertion (A) and other is labelled as Reason (R). <br/><br/>Assertion (A) : Sucrose is a disaccharide and a non-reducing sugar.<br/><br/>Reason (R) : Sucrose involves glycosidic linkage between C<sub>1</sub> of $$\beta$$-glucose and C<sub>2</sub> of $$\alpha$$-fructo... | [{"identifier": "A", "content": "Both (A) and (R) are true but (R) is not the true explanation of (A)."}, {"identifier": "B", "content": "(A) is false but (R) is true."}, {"identifier": "C", "content": "(A) is true but (R) is false."}, {"identifier": "D", "content": "Both (A) and (R) are true and (R) is the true explan... | ["C"] | null | Sucrose is example of disaccharide & non reducing sugar<br><br>Assertion : Correct<br><br>Sucrose involves glycosidic linkage between C<sub>1</sub> of $$\alpha$$-D-glucose C<sub>2</sub> of $$\beta$$-D-fructose<br><br>Reason : Incorrect | mcq | jee-main-2021-online-26th-august-evening-shift | 646 |
1ktfsnmdl | chemistry | biomolecules | carbohydrates | Hydrolysis of sucrose gives : | [{"identifier": "A", "content": "$$\\alpha$$-D-($$-$$)-Glucose and $$\\beta$$-D-($$-$$)-Fructose"}, {"identifier": "B", "content": "$$\\alpha$$-D-(+)-Glucose and $$\\alpha$$-D-($$-$$)-Fructose"}, {"identifier": "C", "content": "$$\\alpha$$-D-($$-$$)-Glucose and $$\\alpha$$-D-(+)-Fructose"}, {"identifier": "D", "content... | ["D"] | null | Sucrose is formed by $$\alpha$$-D(+). Glucose + $$\beta$$-D($$-$$) Fructose.<br><br>We obtain these monomers on hydrolysis. | mcq | jee-main-2021-online-27th-august-evening-shift | 647 |
1ktiab4nh | chemistry | biomolecules | carbohydrates | Which one of the following compounds contains $$\beta$$-C<sub>1</sub>-C<sub>4</sub> glycosidic linkage? | [{"identifier": "A", "content": "Lactose"}, {"identifier": "B", "content": "Sucrose"}, {"identifier": "C", "content": "Maltose"}, {"identifier": "D", "content": "Amylose"}] | ["A"] | null | In Lactose it is $$\beta$$ C<sub>1</sub> - C<sub>4</sub> glycosidic linkage. <br><br>In Maltose, Amylose $$\alpha$$ C<sub>1</sub> - C<sub>4</sub> glycosidic linkage is present. | mcq | jee-main-2021-online-31st-august-morning-shift | 648 |
1l54ac4c9 | chemistry | biomolecules | carbohydrates | <p>C<sub>6</sub>H<sub>12</sub>O<sub>6</sub> $$\buildrel \text{Zymase} \over
\longrightarrow $$ A $$\mathrel{\mathop{\kern0pt\longrightarrow}
\limits_\Delta ^\text{NaOI}} $$ B + CHI<sub>3</sub></p>
<p>The number of carbon atoms present in the product B is _______________.</p> | [] | null | 1 | $$\mathrm{C}_6 \mathrm{H}_{12} \mathrm{O}_6 \stackrel{\text { Zymase }}{\longrightarrow} \mathrm{C}_2 \mathrm{H}_5 \mathrm{OH} \stackrel{\mathrm{NaOl}}{\longrightarrow} \underset{\text { (B) }}{\mathrm{HCOONa}}+\mathrm{CHI}_3
$$ | integer | jee-main-2022-online-29th-june-morning-shift | 649 |
1l55nq14v | chemistry | biomolecules | carbohydrates | <p>When sugar 'X' is boiled with dilute H<sub>2</sub>SO<sub>4</sub> in alcoholic solution, two isomers 'A' and 'B' are formed. 'A' on oxidation with HNO<sub>3</sub> yields saccharic acid where as 'B' is laevorotatory. The compound 'X' is :</p> | [{"identifier": "A", "content": "Maltose"}, {"identifier": "B", "content": "Sucrose"}, {"identifier": "C", "content": "Lactose"}, {"identifier": "D", "content": "Starch"}] | ["B"] | null | <img src="https://app-content.cdn.examgoal.net/fly/@width/image/1l99vlqhj/d5f8e639-7be3-44f4-a878-6bc7a379b3f3/35ab4670-4c82-11ed-aba3-e33a2f44b599/file-1l99vlqhk.png?format=png" data-orsrc="https://app-content.cdn.examgoal.net/image/1l99vlqhj/d5f8e639-7be3-44f4-a878-6bc7a379b3f3/35ab4670-4c82-11ed-aba3-e33a2f44b599/fi... | mcq | jee-main-2022-online-28th-june-evening-shift | 650 |
1l57sks7e | chemistry | biomolecules | carbohydrates | <p>L-isomer of a compound 'A' (C<sub>4</sub>H<sub>8</sub>O<sub>4</sub>) gives a positive test with [Ag(NH<sub>3</sub>)<sub>2</sub>]<sup>+</sup>. Treatment of 'A' with acetic anhydride yields triacetate derivative. Compound 'A' produces an optically active compound (B) and an optically inactive compound (C) on treatment... | [{"identifier": "A", "content": "<img src=\"https://app-content.cdn.examgoal.net/fly/@width/image/1l58lwc77/71162993-172e-4fcd-b39c-22da565881eb/9b13a130-fc9e-11ec-af50-7b1dc1e93a30/file-1l58lwc78.png?format=png\" data-orsrc=\"https://app-content.cdn.examgoal.net/image/1l58lwc77/71162993-172e-4fcd-b39c-22da565881eb/9b1... | ["A"] | null | <img src="https://app-content.cdn.examgoal.net/fly/@width/image/1l9xko0k3/b262e378-021f-4962-82be-8567ee419e7f/403b9940-598a-11ed-8ffa-1d2a9dd91f8d/file-1l9xko0k4.png?format=png" data-orsrc="https://app-content.cdn.examgoal.net/image/1l9xko0k3/b262e378-021f-4962-82be-8567ee419e7f/403b9940-598a-11ed-8ffa-1d2a9dd91f8d/fi... | mcq | jee-main-2022-online-27th-june-morning-shift | 652 |
1l5c6wjl4 | chemistry | biomolecules | carbohydrates | <p>A polysaccharide 'X' on boiling with dil H<sub>2</sub>SO<sub>4</sub> at 393 K under 2-3 atm pressure yields 'Y'. 'Y' on treatment with bromine water gives gluconic acid. 'X' contains $$\beta$$-glycosidic linkages only. Compound 'X' is :</p> | [{"identifier": "A", "content": "starch"}, {"identifier": "B", "content": "cellulose"}, {"identifier": "C", "content": "amylose"}, {"identifier": "D", "content": "amylopectin"}] | ["B"] | null | Cellulose contains $\beta$-glycosidic linkages only. Structure of cellulose<br><br>
<img src="https://app-content.cdn.examgoal.net/fly/@width/image/1l8jp9y5l/9a3e06a8-4a5e-48de-8931-7a042009f269/16392190-3e1d-11ed-9e32-d31ff3c07428/file-1l8jp9y5m.png?format=png" data-orsrc="https://app-content.cdn.examgoal.net/image/1l... | mcq | jee-main-2022-online-24th-june-morning-shift | 653 |
1l6gr0b43 | chemistry | biomolecules | carbohydrates | <p>Which one of the following is a reducing sugar?</p> | [{"identifier": "A", "content": "<img src=\"https://app-content.cdn.examgoal.net/fly/@width/image/1l6hznhjj/b5e98f0e-745b-4ce1-9884-6a9148fd74eb/a9f401f0-1593-11ed-abd2-c5f8c222b719/file-1l6hznhjk.png?format=png\" data-orsrc=\"https://app-content.cdn.examgoal.net/image/1l6hznhjj/b5e98f0e-745b-4ce1-9884-6a9148fd74eb/a9f... | ["A"] | null | <p><img src="https://app-content.cdn.examgoal.net/fly/@width/image/1l6hznhjj/b5e98f0e-745b-4ce1-9884-6a9148fd74eb/a9f401f0-1593-11ed-abd2-c5f8c222b719/file-1l6hznhjk.png?format=png" data-orsrc="https://app-content.cdn.examgoal.net/image/1l6hznhjj/b5e98f0e-745b-4ce1-9884-6a9148fd74eb/a9f401f0-1593-11ed-abd2-c5f8c222b719... | mcq | jee-main-2022-online-26th-july-morning-shift | 655 |
1l6i5nzqq | chemistry | biomolecules | carbohydrates | <p>Animal starch is the other name of</p> | [{"identifier": "A", "content": "amylose."}, {"identifier": "B", "content": "maltose."}, {"identifier": "C", "content": "glycogen."}, {"identifier": "D", "content": "amylopectin."}] | ["C"] | null | Animal starch is the other name of glycogen
because its structure is similar to amylopectin. | mcq | jee-main-2022-online-26th-july-evening-shift | 656 |
1l6kqzpez | chemistry | biomolecules | carbohydrates | <p>Match List - I with Match List - II.</p>
<p><style type="text/css">
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.tg td{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px;
overflow:hidden;padding:10px 5px;word-break:normal;}
.tg th{border-color:black;border-sty... | [{"identifier": "A", "content": "(A) - (IV), (B) - (I), (C) -(II), (D) - (III)"}, {"identifier": "B", "content": "(A) - (IV), (B) - (III), (C) -(II), (D) - (I)"}, {"identifier": "C", "content": "(A) - (III), (B) - (I), (C) -(IV), (D) - (II)"}, {"identifier": "D", "content": "(A) - (I), (B) - (III), (C) -(IV), (D) - (II... | ["A"] | null | <img src="https://app-content.cdn.examgoal.net/fly/@width/image/1l6q6h6mr/81f765aa-258b-41b3-aa7a-49eef43960ae/9fc50230-1a14-11ed-a446-bf4a07617a8d/file-1l6q6h6ms.png?format=png" data-orsrc="https://app-content.cdn.examgoal.net/image/1l6q6h6mr/81f765aa-258b-41b3-aa7a-49eef43960ae/9fc50230-1a14-11ed-a446-bf4a07617a8d/fi... | mcq | jee-main-2022-online-27th-july-evening-shift | 658 |
1l6mdnxmj | chemistry | biomolecules | carbohydrates | <p>For the below given cyclic hemiacetal (X), the correct pyranose structure is :</p>
<p><img src="data:image/png;base64,UklGRpAMAABXRUJQVlA4IIQMAABwxgCdASrXAQADP4HA22Q2MT+mofSZy/AwCWlu4WjRemNwvH6V/3PrHuIOTW+OdXwnFefNl3z1qD//9c5taFMAA5BM9IE7wTD1hOdYTnWE51hOdWSlGJ7qy9EkI/cODdXEmEu3ebh+aw/4iSFnJaz0t4A839w7LlvpLUUSQs4HuHZ... | [{"identifier": "A", "content": "<img src=\"https://app-content.cdn.examgoal.net/fly/@width/image/1l6rwtoia/bce06f4b-6795-42f4-b997-7dff578841db/714bba30-1b08-11ed-b7a9-79e6877f3a95/file-1l6rwtoib.png?format=png\" data-orsrc=\"https://app-content.cdn.examgoal.net/image/1l6rwtoia/bce06f4b-6795-42f4-b997-7dff578841db/714... | ["D"] | null | <img src="https://app-content.cdn.examgoal.net/fly/@width/image/1l7oxdlq5/f4655223-1601-4df5-9bf3-585fd7e8056e/78c28ed0-2d30-11ed-b144-5949e1cb6ba8/file-1l7oxdlq6.png?format=png" data-orsrc="https://app-content.cdn.examgoal.net/image/1l7oxdlq5/f4655223-1601-4df5-9bf3-585fd7e8056e/78c28ed0-2d30-11ed-b144-5949e1cb6ba8/fi... | mcq | jee-main-2022-online-28th-july-morning-shift | 659 |
1l6nxa67s | chemistry | biomolecules | carbohydrates | <p>The formulas of A and B for the following reaction sequence</p>
<p><img src="data:image/png;base64,UklGRn4MAABXRUJQVlA4IHIMAABQwgCdASoAA8ABP4HA2mS2MK0nIfIZisAwCWlu8p8dpyxiN+fb6l/2Xq9yhO43914zyEcr/5vxk9//+tgxoUX5XIvyuRflci/K5Bs5wLPPRcdVZPp94mz1+wD8bX4gjKl4pr2pPMZZHAQljSuRflcJlqtVqtVqtVqtVqtVqtVqqSxCn7wNly7qgb4zBpo9NV... | [{"identifier": "A", "content": "$$\\mathrm{A}=\\mathrm{C}_{7} \\mathrm{H}_{14} \\mathrm{O}_{8}, \\quad \\mathrm{~B}=\\mathrm{C}_{6} \\mathrm{H}_{14}$$"}, {"identifier": "B", "content": "$$\\mathrm{A}=\\mathrm{C}_{7} \\mathrm{H}_{13} \\mathrm{O}_{7}, \\quad \\mathrm{~B}=\\mathrm{C}_{7} \\mathrm{H}_{14} \\mathrm{O}$$"},... | ["A"] | null | <img src="https://app-content.cdn.examgoal.net/fly/@width/image/1l7vy6cqv/223a5deb-09a5-4e88-8d75-0cef7ce47777/14d59170-310d-11ed-9c98-ad39d53b642b/file-1l7vy6cqw.png?format=png" data-orsrc="https://app-content.cdn.examgoal.net/image/1l7vy6cqv/223a5deb-09a5-4e88-8d75-0cef7ce47777/14d59170-310d-11ed-9c98-ad39d53b642b/fi... | mcq | jee-main-2022-online-28th-july-evening-shift | 660 |
1l6rl2ubr | chemistry | biomolecules | carbohydrates | <p>Given below are two statements. One is labelled as Assertion A and the other is labelled as Reason R.</p>
<p>Assertion A: Amylose is insoluble in water.</p>
<p>Reason R: Amylose is a long linear molecule with more than 200 glucose units.</p>
<p>In the light of the above statements, choose the correct answer from the... | [{"identifier": "A", "content": "Both $$\\mathbf{A}$$ and $$\\mathbf{R}$$ are correct and $$\\mathbf{R}$$ is the correct explanation of $$\\mathbf{A}$$."}, {"identifier": "B", "content": "Both $$\\mathbf{A}$$ and $$\\mathbf{R}$$ are correct but $$\\mathbf{R}$$ is NOT the correct explanation of $$\\mathbf{A}$$."}, {"ide... | ["D"] | null | <p>Let's analyze the given statements:</p>
<p>Assertion A: "Amylose is insoluble in water." This statement is incorrect. Amylose is actually soluble in water, although its solubility is lower compared to other carbohydrates like amylopectin.</p>
<p>Reason R: "Amylose is a long linear molecule with mo... | mcq | jee-main-2022-online-29th-july-evening-shift | 661 |
1ldoijooy | chemistry | biomolecules | carbohydrates | <p>The correct representation in six membered pyranose form for the following sugar [X] is</p>
<p><img src="data:image/png;base64,UklGRmwQAABXRUJQVlA4IGAQAABw2QCdASqTAQADP4G21mW2LT+nIXBaS/AwCWlu4WmC4mNwud8u/zvpB+ddverlw9s/e2f97zVcAHeFyXXsv//+rP7/Fg855RyTu7u7u7u7u7p+A9gPYD1uEenL+JtJGNuQVdQuZSpGoCCTX9ZB7Iwyj9pfN8eULMv531... | [{"identifier": "A", "content": "<img src=\"https://app-content.cdn.examgoal.net/fly/@width/image/1ldougdc8/0af204bb-be26-4192-a178-c26ee30b50f9/56985080-a3ee-11ed-b56d-63317aef4a22/file-1ldougdc9.png?format=png\" data-orsrc=\"https://app-content.cdn.examgoal.net/image/1ldougdc8/0af204bb-be26-4192-a178-c26ee30b50f9/569... | ["D"] | null | <p><img src="https://app-content.cdn.examgoal.net/fly/@width/image/1ldouf9ws/6db451e9-544b-4172-a8c2-116a333fdc9a/382312c0-a3ee-11ed-b56d-63317aef4a22/file-1ldouf9wt.png?format=png" data-orsrc="https://app-content.cdn.examgoal.net/image/1ldouf9ws/6db451e9-544b-4172-a8c2-116a333fdc9a/382312c0-a3ee-11ed-b56d-63317aef4a22... | mcq | jee-main-2023-online-1st-february-morning-shift | 662 |
1ldojeb80 | chemistry | biomolecules | carbohydrates | <p>Match List I with List II</p>
<p><style type="text/css">
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.tg th{border-color:black;border-style:solid;bo... | [{"identifier": "A", "content": "(A) - III, (B) - IV, (C) - II, (D) - I"}, {"identifier": "B", "content": "(A) - II, (B) - I, (C) - III, (D) - IV"}, {"identifier": "C", "content": "(A) - III, (B) - IV, (C) - I, (D) - II"}, {"identifier": "D", "content": "(A) - I, (B) - II, (C) - III, (D) - IV"}] | ["B"] | null | (A) Molisch test is for carbohydrates
<br/><br/>(B) Biuret test is for proteins/peptide
<br/><br/>(C) Carbylamine test is for primary amine
<br/><br/>(D) Schiff’s test is for aldehyde | mcq | jee-main-2023-online-1st-february-morning-shift | 663 |
1ldr3hbj4 | chemistry | biomolecules | carbohydrates | <p>Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).</p>
<p>Assertion (A) : Ketoses give Seliwanoff's test faster than Aldoses.</p>
<p>Reason (R) : Ketoses undergo $$\beta$$-elimination followed by formation of furfural.</p>
<p>In the light of the above statement... | [{"identifier": "A", "content": "(A) is false but (R) is true"}, {"identifier": "B", "content": "Both (A) and (R) are true but (R) is not the correct explanation of (A)"}, {"identifier": "C", "content": "(A) is true but (R) is false"}, {"identifier": "D", "content": "Both (A) and (R) are true and (R) is the correct exp... | ["C"] | null | Seliwanoff 's test is a differentiating test for Ketose
and aldose. This test relies on the principle that the
keto hexose are more rapidly dehydrated to form
5-hydroxy methyl furfural when heated in acidic
medium which on condensation with resorcinol,
Cherry red or brown red coloured complex is
formed rapidly indicati... | mcq | jee-main-2023-online-30th-january-morning-shift | 664 |
1lgsz5bwm | chemistry | biomolecules | carbohydrates | <p>Number of compounds from the following which will not produce orange red precipitate with Benedict solution is ___________.</p>
<p>Glucose, maltose, sucrose, ribose, 2-deoxyribose, amylose, lactose</p> | [] | null | 2 | Benedict's solution is a reagent that tests for reducing sugars. A reducing sugar is one that has a free aldehyde or ketone group, which can reduce the copper(II) ions in Benedict's reagent to copper(I) oxide, which forms a brick-red or orange-red precipitate.
<br/><br/>Given the compounds :
<br/><br/>1. Glucose - is ... | integer | jee-main-2023-online-11th-april-evening-shift | 667 |
jaoe38c1lse7270g | chemistry | biomolecules | carbohydrates | <p>Match List I with List II</p>
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.tg th{border-color:black;border-style:solid;bo... | [{"identifier": "A", "content": "A-II, B-IV, C-III, D-I"}, {"identifier": "B", "content": "A-III, B-II, C-I, D-IV\n"}, {"identifier": "C", "content": "A-IV, B-I, C-III, D-II\n"}, {"identifier": "D", "content": "A-I, B-IV, C-III, D-II"}] | ["A"] | null | <p>Glucose $$\xrightarrow[\Delta]{\mathrm{NaHCO}_3}$$ no reaction</p>
<p>Glucose $$\xrightarrow[\Delta]{\mathrm{HNO}_3}$$ saccharic acid</p>
<p>Glucose $$\xrightarrow[\Delta]{\mathrm{HI}}$$ n-hexane</p>
<p>Glucose $$\xrightarrow[\Delta]{\mathrm{Br}_2}$$ Gluconic acid</p> | mcq | jee-main-2024-online-31st-january-morning-shift | 669 |
jaoe38c1lsfmi0q1 | chemistry | biomolecules | carbohydrates | <p>Match List I with List II</p>
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.tg th{border-color:black;border-style:solid;bo... | [{"identifier": "A", "content": "A-IV, B-II, C-I, D-III\n"}, {"identifier": "B", "content": "A-I, B-III, C-IV, D-II\n"}, {"identifier": "C", "content": "A-II, B-I, C-III, D-IV\n"}, {"identifier": "D", "content": "A-II, B-III, C-I, D-IV"}] | ["D"] | null | <p>A-II, B-III, C-I, D-IV</p>
<p>Fact based.</p> | mcq | jee-main-2024-online-29th-january-evening-shift | 670 |
1lsgy8oql | chemistry | biomolecules | carbohydrates | <p>Sugar which does not give reddish brown precipitate with Fehling's reagent, is :</p> | [{"identifier": "A", "content": "Glucose\n"}, {"identifier": "B", "content": "Sucrose\n"}, {"identifier": "C", "content": "Lactose\n"}, {"identifier": "D", "content": "Maltose"}] | ["B"] | null | <p>Sucrose do not contain hemiacetal group.</p>
<p>Hence it does not give test with Fehling solution.</p>
<p>While all other give positive test with Fehling solution</p> | mcq | jee-main-2024-online-30th-january-morning-shift | 671 |
luxzq693 | chemistry | biomolecules | carbohydrates | <p>The incorrect statement about Glucose is :</p> | [{"identifier": "A", "content": "Glucose remains in multiple isomeric form in its aqueous solution\n"}, {"identifier": "B", "content": "Glucose is soluble in water because of having aldehyde functional group\n"}, {"identifier": "C", "content": "Glucose is an aldohexose\n"}, {"identifier": "D", "content": "Glucose is on... | ["B"] | null | <p>Let's analyze each statement to identify the incorrect one about glucose.</p>
<p><strong>Option A:</strong> Glucose remains in multiple isomeric forms in its aqueous solution. This statement is <strong>correct</strong>. Glucose exists in equilibrium with various isomeric forms in solution, including its linear form... | mcq | jee-main-2024-online-9th-april-evening-shift | 672 |
lv2eryxe | chemistry | biomolecules | carbohydrates | <p>Match List I with List II</p>
<p><style type="text/css">
.tg {border-collapse:collapse;border-spacing:0;}
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.tg th{border-color:black;border-style:solid;bo... | [{"identifier": "A", "content": "A-III, B-IV, C-II, D-I\n"}, {"identifier": "B", "content": "A-IV, B-III, C-I, D-II\n"}, {"identifier": "C", "content": "A-III, B-IV, C-I, D-II\n"}, {"identifier": "D", "content": "A-IV, B-III, C-II, D-I"}] | ["B"] | null | <p>$$\alpha$$-Glucose and $$\alpha$$-Galactose differ in configuration of one asymmetric carbon. Thus they are epimers.</p>
<p>$$\alpha$$ and $$\beta$$-glucose differ at anomeric carbon. Thus they are anomers.</p>
<p>$$\alpha$$-Glucose and $$\alpha$$-Fructose have different functional groups. Thus they are functional i... | mcq | jee-main-2024-online-4th-april-evening-shift | 674 |
lv5gt4ry | chemistry | biomolecules | carbohydrates | <p><img src="data:image/png;base64,UklGRrgQAABXRUJQVlA4IKwQAABQGgGdASr9AgADP4HA3mS2Ma8nIbO5asAwCWlu8lqb/0j3QVmFPkpzes/TFdksFcTfyW547f5l1vr0Gv//XO5oP//1l/f4ghohbhufUD4NThohbhufUD4NThohbhufUD4NThohbhufTOHJhMvTH4d9Fy6I+XRMXs4MrivfaO7n1A+DU4aIW4bn1A+DU4aIVouBoRVLtU0QE4QCejt9YeP7TgVIrbscHcEPKg46d6AGIs9dhRL+7AbmvPuS5NaiD4NTh... | [{"identifier": "A", "content": "can be oxidized to a dicarboxylic acid with $$\\mathrm{Br}_2$$ water\n"}, {"identifier": "B", "content": "despite the presence of $$-\\mathrm{CHO}$$ does not give Schiff's test\n"}, {"identifier": "C", "content": "will coexist in equilibrium with 2 other cyclic structure\n"}, {"identifi... | ["A"] | null | <p>The given structure is of glucose.</p>
<p>Glucose does not give Schiff test due to absence of aldehyde group in ring structure, glucose on reaction with $$\mathrm{Br}_2 / \mathrm{H}_2 \mathrm{O}$$ give gluconic acid which is mono carboxylic acid.</p> | mcq | jee-main-2024-online-8th-april-morning-shift | 675 |
3fVsM8OaomHwGegB | chemistry | biomolecules | proteins-and-enzymes | The functional group, which is found in amino acid is | [{"identifier": "A", "content": "-COOH group"}, {"identifier": "B", "content": "-NH<sub>2</sub> group"}, {"identifier": "C", "content": "-CH<sub>3</sub> group"}, {"identifier": "D", "content": "both (a) and (b)"}] | ["D"] | null | Amino acids contain $$-$$ $$N{H_2}$$ and $$-$$ $$COOH$$ groups $$e.g$$
<br><br><img class="question-image" src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734265321/exam_images/kwg5z8h1ntiulerdzzkw.webp" loading="lazy" alt="AIEEE 2002 Chemistry - Biomolecules Question 161 English Explanation"> | mcq | aieee-2002 | 676 |
66NHlZF5ZVy4XoJz | chemistry | biomolecules | proteins-and-enzymes | Identify the correct statements regarding enzymes | [{"identifier": "A", "content": "Enzymes are specific biological catalysts that can normally function at very high\ntemperature (T ~ 1000 K) "}, {"identifier": "B", "content": "Enzymes are specific biological catalysts that the posses well \u2013 defined active sites "}, {"identifier": "C", "content": "Enzymes are spec... | ["B"] | null | Enzymes are shape selective specific biological catalysts which normally functions effectively at body temperature. | mcq | aieee-2004 | 677 |
MbSqitW9IUkfMgCz | chemistry | biomolecules | proteins-and-enzymes | Insulin production and its action in human body are responsible for the level of diabetes. This
compound belongs to which of the following categories? | [{"identifier": "A", "content": "A co- enzyme"}, {"identifier": "B", "content": "An antibiotic "}, {"identifier": "C", "content": "An enzyme"}, {"identifier": "D", "content": "A hormone "}] | ["D"] | null | Insulin is a proteinaceous hormone secreted by $$\beta $$-cells by islet of Langerhans of pancreas in our body. | mcq | aieee-2004 | 678 |
uBWnxySe3vx4UZKN | chemistry | biomolecules | proteins-and-enzymes | The secondary structure of a protein refers to | [{"identifier": "A", "content": "$$\\alpha$$-helical backbone"}, {"identifier": "B", "content": "hydrophobic interactions"}, {"identifier": "C", "content": "sequence of $$\\alpha$$-amino acids"}, {"identifier": "D", "content": "fixed configuration of the polypeptide backbone"}] | ["A"] | null | The secondary structure of a protein refers to the shape in which a long peptide chain can exist. There are two different conformations of the peptide linkage present in protein, these are $$\alpha $$-helix and $$\beta $$-conformation. The $$\alpha $$-helix always has a right handed arrangement. In $$\beta $$-conformat... | mcq | aieee-2007 | 679 |
UjS12aJLafFvBDdT | chemistry | biomolecules | proteins-and-enzymes | Biuret test is <b>not</b> given by | [{"identifier": "A", "content": "carbohydrates"}, {"identifier": "B", "content": "polypeptides"}, {"identifier": "C", "content": "urea"}, {"identifier": "D", "content": "proteins"}] | ["A"] | null | Biuret test produces violet colour on addition of dilute $$CaS{O_4}$$ to alkaline solution of a compound containing perptide linkage.
<br><br>Polypeptides, proteins and urea have -
<br><br><img class="question-image" src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734263569/exam_images/jwkbn4qamkug6nmv3oxr.web... | mcq | aieee-2010 | 680 |
vGuKG40v1hU3iNIA | chemistry | biomolecules | proteins-and-enzymes | Which one of the following statements is correct ? | [{"identifier": "A", "content": "All amino acids except lysine are optically active"}, {"identifier": "B", "content": "All amino acids are optically active\n"}, {"identifier": "C", "content": "All amino acids except glycine are optically active"}, {"identifier": "D", "content": "All amino acids except glutamic acid are... | ["C"] | null | With the exception of glycine all the $$19$$ other common amino acids have a uniquely different functional group on the central tetrahedral alpha carbon.
<br><br><img class="question-image" src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734266305/exam_images/iicp9smb8j4wxewipalr.webp" loading="lazy" alt="AIE... | mcq | aieee-2012 | 681 |
6451t5ZoWHeJvsVK | chemistry | biomolecules | proteins-and-enzymes | Synthesis of each molecule of glucose in photosynthesis involves: | [{"identifier": "A", "content": "10 molecules of ATP"}, {"identifier": "B", "content": "8 molecules of ATP "}, {"identifier": "C", "content": "6 molecules of ATP "}, {"identifier": "D", "content": "18 molecules of ATP"}] | ["D"] | null | $$6C{O_2} + 12NADPH + 18ATP$$ + 6RuBP
<br><br>$$\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, \to {C_6}{H_{12}}{O_6} + 12NADP + 18ADP$$ + 6RuBP + 18P
<br><br>One molecule of glucose is formed from 6CO<sub>2</sub> by utilising 18ATP and 12NADPH. | mcq | jee-main-2013-offline | 682 |
VD5dmETMLWQ7voWYBgqZO | chemistry | biomolecules | proteins-and-enzymes | Consider the following sequence for aspartic acid :
<br/><br/><img src="data:image/png;base64,UklGRmYQAABXRUJQVlA4IFoQAABQvQCdASoAA38BP4G812U2LywnInGJwsAwCWlu/A04ETYHZ18/q//w7VGzz/v/A/9y+vr1ov/VvM2+fOxkh2Mk8b/89/wKQg/L0l2yzspph7ey9Jdsrk6m1z252IgRph7ey8dOMwSc/YnOND4dNR/kwNr6exwE9Sak8J5dCILy9Jdss7KaYUQdZqxCYEr5fi2w9VqhH... | [{"identifier": "A", "content": "1.88 "}, {"identifier": "B", "content": "3.65"}, {"identifier": "C", "content": "5.74"}, {"identifier": "D", "content": "2.77"}] | ["D"] | null | pI = $${{p{K_1} + p{K_R}} \over 2} = {{1.88 + 3.65} \over 2} = {{5.53} \over 2} = 2.765 \approx 2.77$$ | mcq | jee-main-2016-online-9th-april-morning-slot | 683 |
Ync0jVKYZTR6amAnjUMGZ | chemistry | biomolecules | proteins-and-enzymes | Observation of “Rhumann’s purple” is a confirmatory test for the presence of :
| [{"identifier": "A", "content": "Reducing sugar"}, {"identifier": "B", "content": "Cupric ion"}, {"identifier": "C", "content": "Protein"}, {"identifier": "D", "content": "Starch"}] | ["C"] | null | Ruhemann’s purple is ninhydrin.
<br><img src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734264304/exam_images/qxmrpjftw8divmgpjwjh.webp" style="max-width: 100%;height: auto;display: block;margin: 0 auto;" loading="lazy" alt="JEE Main 2016 (Online) 10th April Morning Slot Chemistry - Biomolecules Question 131 ... | mcq | jee-main-2016-online-10th-april-morning-slot | 684 |
BH6tULGqrH8TBtOf | chemistry | biomolecules | proteins-and-enzymes | Thiol group is present in : | [{"identifier": "A", "content": "Cytosine"}, {"identifier": "B", "content": "Cystine"}, {"identifier": "C", "content": "Cysteine "}, {"identifier": "D", "content": "Methionine"}] | ["C"] | null | Among $$20$$ naturally occuring amino acids ''Cysteine'' has' $$-$$ $$SH'$$ or thiol functional group.
<br><br><img class="question-image" src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734263705/exam_images/enukgqqxep82oijvyjvd.webp" loading="lazy" alt="JEE Main 2016 (Offline) Chemistry - Biomolecules Questi... | mcq | jee-main-2016-offline | 685 |
xHytp66LAf5aEfC3 | chemistry | biomolecules | proteins-and-enzymes | The predominant form of histamine present in human blood is (pK<sub>a</sub>, Histidine = 6.0) | [{"identifier": "A", "content": "<img class=\"question-image\" src=\"https://res.cloudinary.com/dckxllbjy/image/upload/v1734267383/exam_images/yukh8gekyibekrrhhe08.webp\" loading=\"lazy\" alt=\"JEE Main 2018 (Offline) Chemistry - Biomolecules Question 140 English Option 1\">"}, {"identifier": "B", "content": "<img clas... | ["A"] | null | Blood is slightly basic in nature as it's pH is around 7.4 .
<br><br><img class="question-image" src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734267022/exam_images/k388aljrpuvagyyxtytg.webp" loading="lazy" alt="JEE Main 2018 (Offline) Chemistry - Biomolecules Question 140 English Explanation 1">
<br><br>In ... | mcq | jee-main-2018-offline | 687 |
RD0H7VIPO9MdGNYsrFqAs | chemistry | biomolecules | proteins-and-enzymes | The correct match between Item I and Item II is :
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.tg th{font-fami... | [{"identifier": "A", "content": "(A)$$ \\to $$(Q); (B)$$ \\to $$(S); (C)$$ \\to $$(P)"}, {"identifier": "B", "content": "(A)$$ \\to $$(R); (B)$$ \\to $$(S); (C)$$ \\to $$(Q)"}, {"identifier": "C", "content": "(A)$$ \\to $$(R); (B)$$ \\to $$(Q); (C)$$ \\to $$(P)"}, {"identifier": "D", "content": "(A)$$ \\to $$(Q); (B)$$... | ["A"] | null | <img src="https://app-content.cdn.examgoal.net/fly/@width/image/1l3qs6fuf/56b189d1-93fd-4663-bdc1-6e3d6a6e796f/d7b0bc70-df04-11ec-b17a-f1edf5965e5d/file-1l3qs6fug.png?format=png" data-orsrc="https://app-content.cdn.examgoal.net/image/1l3qs6fuf/56b189d1-93fd-4663-bdc1-6e3d6a6e796f/d7b0bc70-df04-11ec-b17a-f1edf5965e5d/fi... | mcq | jee-main-2019-online-11th-january-evening-slot | 689 |
133K4VCn7QfsukBrIHsVK | chemistry | biomolecules | proteins-and-enzymes | The peptide that gives positive ceric
ammonium nitrate and carbylamine tests is : | [{"identifier": "A", "content": "Ser-Lys"}, {"identifier": "B", "content": "Asp-Gln"}, {"identifier": "C", "content": "Gln-Asp"}, {"identifier": "D", "content": "Lys-Asp"}] | ["A"] | null | Positive Ceric ammonium nitrate test is given by
alcohol (- OH).
<br><br>Positive Carbylamine test is given by 1<sup>o</sup> amine (-NH<sub>2</sub>).
<picture><source media="(max-width: 320px)" srcset="https://res.cloudinary.com/dckxllbjy/image/upload/v1734264114/exam_images/ec1diayiofng5v3mftbh.webp"><source media="(m... | mcq | jee-main-2019-online-9th-april-evening-slot | 690 |
Ainno7Izmjbmyh82TDvpK | chemistry | biomolecules | proteins-and-enzymes | The correct structure of histidine in a strongly acidic solution (pH = 2) is - | [{"identifier": "A", "content": "<img src=\"https://res.cloudinary.com/dckxllbjy/image/upload/v1734267412/exam_images/aclqs3lkn69pk2y2khac.webp\" style=\"max-width: 100%; height: auto;display: block;margin: 0 auto;\" loading=\"lazy\" alt=\"JEE Main 2019 (Online) 12th January Evening Slot Chemistry - Biomolecules Quest... | ["B"] | null | <img src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734264284/exam_images/d2lwy7kq3zbhrhp5q7ls.webp" style="max-width: 100%; height: auto;display: block;margin: 0 auto;" loading="lazy" alt="JEE Main 2019 (Online) 12th January Evening Slot Chemistry - Biomolecules Question 123 English Explanation"> | mcq | jee-main-2019-online-12th-january-evening-slot | 692 |
v7XRrlKIMGrlUbverYrnU | chemistry | biomolecules | proteins-and-enzymes | Among the following compounds most basic amino acid is - | [{"identifier": "A", "content": "Lysine"}, {"identifier": "B", "content": "Asparagine "}, {"identifier": "C", "content": "Histidine "}, {"identifier": "D", "content": "Serine"}] | ["A"] | null | <b>Compound</b> <b>Pl value</b>
<br>Histidine 7.6
<br>Serine 5.7
<br>Lysine &nbs... | mcq | jee-main-2019-online-12th-january-morning-slot | 693 |
Ju7MKvcDmXaFE38YBqdM7 | chemistry | biomolecules | proteins-and-enzymes | Which of the following tests cannot be used for identifying amino acids? | [{"identifier": "A", "content": "Ninhydrin test "}, {"identifier": "B", "content": "Barfoed test \n"}, {"identifier": "C", "content": "Xanthoproteic test"}, {"identifier": "D", "content": "Biuret test \n"}] | ["B"] | null | Barfoed test is used to detect the presence of monosaccharide (reducing sugars) in solutions not amino acids. | mcq | jee-main-2019-online-10th-january-evening-slot | 694 |
oStCN8cJD43lWcIliACLM | chemistry | biomolecules | proteins-and-enzymes | The correct structure of product 'P' in the following reactions is :
<br/><br/><img src="data:image/png;base64,UklGRmYVAABXRUJQVlA4IFoVAACQbACdASoAA50APm00lkkkIqIhIpMJyIANiWlu4XSF7mNwr15b/unap/UPyb/q/qT+M/QP2D8pv3i51vWP/F9CP5B9ift39f/cP+8/uV8of4D7ZvRv5Ef2/qEfjH8t/t/5f/4LiSdq8wX19+gf5v/DfvL/ivTl/qfRP63f7j3AP5V/Vv9N6y/8... | [{"identifier": "A", "content": "<img src=\"https://res.cloudinary.com/dckxllbjy/image/upload/v1734264102/exam_images/yksyobrh9nqjaxhugtzy.webp\" style=\"max-width: 100%; height: auto;display: block;margin: 0 auto;\" loading=\"lazy\" alt=\"JEE Main 2019 (Online) 10th January Morning Slot Chemistry - Biomolecules Quest... | ["B"] | null | <picture><source media="(max-width: 320px)" srcset="https://res.cloudinary.com/dckxllbjy/image/upload/v1734266247/exam_images/ogtywkhjpmhbzzv4wqmd.webp"><source media="(max-width: 500px)" srcset="https://res.cloudinary.com/dckxllbjy/image/upload/v1734266441/exam_images/q36zyipv9sk1iy5j1pn3.webp"><source media="(max-wid... | mcq | jee-main-2019-online-10th-january-morning-slot | 695 |
BEaYDlQRxJEkI8LRstWNg | chemistry | biomolecules | proteins-and-enzymes | The correct sequence of amino acids present in the tripeptide given below is :
<br/><br/><img src="data:image/png;base64,UklGRtYKAABXRUJQVlA4IMoKAACQhgCdASoAA/8AP4HA2mO2MS0mpLHJUsAwCWlu4WgjqmNwud6W9FhdWwv0A9uPn36DeB0r/59skt7Hf/vp4QHRaZaS2L8U2StAhnJF26viRunuGYdlJ4404blxdXrRWOTxxpnJF3E26qDulYSwnIlUXSn6X4PbV3nWNV8UsFfOvc... | [{"identifier": "A", "content": "Val - Ser - Thr"}, {"identifier": "B", "content": "Thr - Ser - Val"}, {"identifier": "C", "content": "Leu - Ser - Thr"}, {"identifier": "D", "content": "Thr - Ser - Leu"}] | ["A"] | null | Formation of the tripeptide (Val-Ser-Thr) can be shown as:<br><br><img src="https://app-content.cdn.examgoal.net/fly/@width/image/1l8p8hov9/1ab8c3bc-c36e-441e-916f-35309c411421/26394c60-4128-11ed-872d-812d64214f2f/file-1l8p8hova.png?format=png" data-orsrc="https://app-content.cdn.examgoal.net/image/1l8p8hov9/1ab8c3bc-c... | mcq | jee-main-2019-online-9th-january-evening-slot | 696 |
DoVmhIIJy0ohCCmDVARNW | chemistry | biomolecules | proteins-and-enzymes | The increasing order of pka of the following amino acids in aqueous solution is : <br/><br>
Gly, Asp, Lys, Arg</br> | [{"identifier": "A", "content": "Asp < Gly < Arg < Lys"}, {"identifier": "B", "content": "Gly < Asp < Arg < Lys"}, {"identifier": "C", "content": "Asp < Gly < Lys < Arg"}, {"identifier": "D", "content": "Arg < Lys < Gly < Asp"}] | ["C"] | null | <img src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734263822/exam_images/orm5q5kzylwusproncsd.webp" style="max-width: 100%; height: auto;display: block;margin: 0 auto;" loading="lazy" alt="JEE Main 2019 (Online) 9th January Morning Slot Chemistry - Biomolecules Question 130 English Explanation 1">
<br><img ... | mcq | jee-main-2019-online-9th-january-morning-slot | 697 |
8GyteLImln8kPPouTpjgy2xukfcgjnbd | chemistry | biomolecules | proteins-and-enzymes | The number of chiral centres present in
threonine is ________. | [] | null | 2 | The structure of threonine is
<img src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734266206/exam_images/ntchpte4hadv2admhnsg.webp" style="max-width: 100%;height: auto;display: block;margin: 0 auto;" loading="lazy" alt="JEE Main 2020 (Online) 4th September Evening Slot Chemistry - Biomolecules Question 103 Eng... | integer | jee-main-2020-online-4th-september-evening-slot | 699 |
iuqCHmH9eRV9JKc3g6jgy2xukfi6r5kv | chemistry | biomolecules | proteins-and-enzymes | Which of the following is not an essential
amino acid : | [{"identifier": "A", "content": "Valine"}, {"identifier": "B", "content": "Leucine"}, {"identifier": "C", "content": "Lysine"}, {"identifier": "D", "content": "Tyrosine"}] | ["D"] | null | Tyrosine is not an essential amino acid. | mcq | jee-main-2020-online-5th-september-morning-slot | 700 |
SOQXP2liM2JGAoOtptjgy2xukfjfvesv | chemistry | biomolecules | proteins-and-enzymes | The number of chiral carbon(s) present in
<br/>peptide, Ile-Arg-Pro, is _____. | [] | null | 4 | The amino acids present in the given tripeptide
I$$l$$e–Arg–Pro are isoleucine, arginine and proline.
<br><img src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734265405/exam_images/pjd0cbfmr1jtqxxxyhcf.webp" style="max-width: 100%;height: auto;display: block;margin: 0 auto;" loading="lazy" alt="JEE Main 2020 (... | integer | jee-main-2020-online-5th-september-morning-slot | 701 |
2LbXX7whEM9Ql7uD281kmj86o5j | chemistry | biomolecules | proteins-and-enzymes | Which of the following is correct structure of tyrosine? | [{"identifier": "A", "content": "<img src=\"https://res.cloudinary.com/dckxllbjy/image/upload/v1734263814/exam_images/a2bmbhj7rhhosl1ri4ta.webp\" style=\"max-width: 100%;height: auto;display: block;margin: 0 auto;\" loading=\"lazy\" alt=\"JEE Main 2021 (Online) 17th March Morning Shift Chemistry - Biomolecules Question... | ["D"] | null | Tyrosine is p-hydroxyphenylalanine. Its structure is<br><br><img src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734265066/exam_images/s1mbup3bugnthzxmykc8.webp" style="max-width: 100%;height: auto;display: block;margin: 0 auto;" loading="lazy" alt="JEE Main 2021 (Online) 17th March Morning Shift Chemistry - B... | mcq | jee-main-2021-online-17th-march-morning-shift | 704 |
1krri516o | chemistry | biomolecules | proteins-and-enzymes | Which one of the following statements is not true about enzymes? | [{"identifier": "A", "content": "Enzymes are non-specific for a reaction and substrate."}, {"identifier": "B", "content": "Almost all enzymes are proteins."}, {"identifier": "C", "content": "Enzymes work as catalysts by lowering the activation energy of a biochemical reaction."}, {"identifier": "D", "content": "The act... | ["A"] | null | Enzymes are mostly proteins. They function as catalysts in biochemical reactions by lowering the energy of activation. They are highly specific w.r.t. temperature and pH in their action. | mcq | jee-main-2021-online-20th-july-evening-shift | 705 |
1kruryaji | chemistry | biomolecules | proteins-and-enzymes | The water soluble protein is : | [{"identifier": "A", "content": "Fibrin"}, {"identifier": "B", "content": "Albumin"}, {"identifier": "C", "content": "Myosin"}, {"identifier": "D", "content": "Collagen"}] | ["B"] | null | Albumin is water soluble. | mcq | jee-main-2021-online-25th-july-morning-shift | 706 |
1ktjvf3ck | chemistry | biomolecules | proteins-and-enzymes | Which of the following is not an example of fibrous protein? | [{"identifier": "A", "content": "Keratin"}, {"identifier": "B", "content": "Albumin"}, {"identifier": "C", "content": "Collagen"}, {"identifier": "D", "content": "Myosin"}] | ["B"] | null | <p>Fibrous proteins are characterized by their elongated, insoluble structure and often serve structural or mechanical roles. Among the options provided, keratin, collagen, and myosin are examples of fibrous proteins.</p>
<p>Albumin, on the other hand, is a globular protein that is soluble in water. It has a more spher... | mcq | jee-main-2021-online-31st-august-evening-shift | 708 |
1ktn3e844 | chemistry | biomolecules | proteins-and-enzymes | A peptide synthesized by the reactions of one molecule each of Glycine, Leucine, Aspartic acid and Histidine will have _________ peptide linkages. | [] | null | 3 | Combination of n amino acids gives a polypeptide
with (n – 1) peptide linkages.
<br><br>Similarly combination of four amino acids gives a
tetrapeptide with three peptide linkages. | integer | jee-main-2021-online-1st-september-evening-shift | 709 |
1l54yuu6n | chemistry | biomolecules | proteins-and-enzymes | <p>The structure of protein that is unaffected by heating is</p> | [{"identifier": "A", "content": "secondary structure"}, {"identifier": "B", "content": "tertiary structure"}, {"identifier": "C", "content": "primary structure"}, {"identifier": "D", "content": "quaternary structure"}] | ["C"] | null | <p>The primary structure of protein is unaffected by physical 'or' chemical changes.</p> | mcq | jee-main-2022-online-29th-june-evening-shift | 710 |
1l58iw1xa | chemistry | biomolecules | proteins-and-enzymes | <p>Match List-I with List-II</p>
<p><style type="text/css">
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overflow:hidden;padding:10px 5px;word-break:normal;}
.tg th{border-color:black;border-style:solid;bo... | [{"identifier": "A", "content": "A-III, B-IV, C-II, D-I"}, {"identifier": "B", "content": "A-III, B-II, C-I, D-IV"}, {"identifier": "C", "content": "A-IV, B-III, C-I, D-II"}, {"identifier": "D", "content": "A-IV, B-II, C-III, D-I"}] | ["C"] | null | (A) Invertase → Cane sugar into glucose<br/><br/>
(B) Zymase → Glucose into ethanol<br/><br/>
(C) Diastase → Starch into maltose<br/><br/>
(D) Maltase → Maltose into glucose | mcq | jee-main-2022-online-26th-june-evening-shift | 712 |
1l59rqg69 | chemistry | biomolecules | proteins-and-enzymes | <p>How many of the given compounds will give a positive Biuret test ____________ ?</p>
<p>Glycine, Glycylalanine, Tripeptide, Biuret</p> | [] | null | 2 | Since dipeptides and free amino acids do not give
biuret test. Hence glycine and glycylalanine do not
give this test. | integer | jee-main-2022-online-25th-june-evening-shift | 713 |
1l5be68he | chemistry | biomolecules | proteins-and-enzymes | <p>In alanylglycyl leucyl alanyl valine, the number of peptide linkages is ___________.</p> | [] | null | 4 | The given pentapeptide is
<br/><br/>
$$\text { ALA - GLY - LEU - ALA - VAL }$$
<br/><br/>
It has 4 peptide linkages. | integer | jee-main-2022-online-24th-june-evening-shift | 714 |
1ldo25rd6 | chemistry | biomolecules | proteins-and-enzymes | <p>Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).</p>
<p>Assertion (A) : $$\alpha$$-halocarboxylic acid on reaction with dil. $$\mathrm{NH_3}$$ gives good yield of $$\alpha$$-amino carboxylic acid whereas the yield of amines is very low when prepared from alky... | [{"identifier": "A", "content": "(A) is not correct but (R) is correct"}, {"identifier": "B", "content": "(A) is correct but (R) is not correct"}, {"identifier": "C", "content": "Both (A) and (R) are correct but (R) is not the correct explanation of (A)"}, {"identifier": "D", "content": "Both (A) and (R) are correct an... | ["D"] | null | <img src="https://app-content.cdn.examgoal.net/fly/@width/image/1le4dflbk/31ca5f8f-872f-4d47-8e2e-f62c12eec090/50257b00-ac78-11ed-b725-7db87d3646da/file-1le4dflbl.png?format=png" data-orsrc="https://app-content.cdn.examgoal.net/image/1le4dflbk/31ca5f8f-872f-4d47-8e2e-f62c12eec090/50257b00-ac78-11ed-b725-7db87d3646da/fi... | mcq | jee-main-2023-online-1st-february-evening-shift | 717 |
1ldpora9b | chemistry | biomolecules | proteins-and-enzymes | <p>A protein '$$\mathrm{X}$$' with molecular weight of $$70,000 \mathrm{~u}$$, on hydrolysis gives amino acids. One of these amino acid is</p> | [{"identifier": "A", "content": "<img src=\"https://app-content.cdn.examgoal.net/fly/@width/image/1ldq0zsol/06a7d29d-f426-4f65-8bb2-58f58ff01a78/b23ed250-a494-11ed-8eb4-ef270ed2fedb/file-1ldq0zsom.png?format=png\" data-orsrc=\"https://app-content.cdn.examgoal.net/image/1ldq0zsol/06a7d29d-f426-4f65-8bb2-58f58ff01a78/b23... | ["C"] | null | Protein upon hydrolysis gives $$\alpha $$-amino acids. Only
option (C) contains $$\alpha $$-amino acid. Hence the correct
answer is (C).
| mcq | jee-main-2023-online-31st-january-morning-shift | 718 |
ldqxz2fs | chemistry | biomolecules | proteins-and-enzymes | A short peptide on complete hydrolysis produces 3 moles of glycine (G), two moles of leucine (L) and two moles of valine (V) per mole of peptide. The number of peptide linkages in it are ________. | [] | null | 6 | <p>The peptide has seven amino acid units therefore it has six peptide bonds.</p> | integer | jee-main-2023-online-30th-january-evening-shift | 719 |
1ldscz5w4 | chemistry | biomolecules | proteins-and-enzymes | Following tetrapeptide can be represented as<p></p>
<p><img src="data:image/png;base64,UklGRoARAABXRUJQVlA4IHQRAABw2QCdASoAAwICP4HA2mU2MC0nInI5AsAwCWlu/BV4onYnZ1+frv/vbXXT4zzdpe+H3Qbf/oSU0Pzj+R///TkVC9rl3/zrUTzvz4eL0EV0qMVCEmNE9qAXlN6jeK/qnNs2nWZEHtuAaHLs6AY/Ptcu/+daid9X5owXE/A6x7iguJ7oTQOJGOtIe0++1YUvqMn5o8kTKiuJCUIg8... | [{"identifier": "A", "content": "YQLF"}, {"identifier": "B", "content": "FIQY"}, {"identifier": "C", "content": "PLDY"}, {"identifier": "D", "content": "FLDY"}] | ["D"] | null | <p>The tetrapeptide code is</p>
<p>FLDY</p>
<p>F $$\to$$ Phenyl alanine</p>
<p>L $$\to$$ Leucine</p>
<p>D $$\to$$ Aspartic acid</p>
<p>Y $$\to$$ Tyrosine</p> | mcq | jee-main-2023-online-29th-january-evening-shift | 720 |
1ldwvd0a2 | chemistry | biomolecules | proteins-and-enzymes | <p>Total number of tripeptides possible by mixing of valine and proline is ___________</p> | [] | null | 8 | <p>To calculate the total number of tripeptides possible by mixing valine and proline, we need to use the fundamental principle of counting.</p>
<p>Since a tripeptide is made up of three amino acids, and we have two choices for each position (either valine or proline), we can use the multiplication principle to find t... | integer | jee-main-2023-online-24th-january-evening-shift | 722 |
1lgrl6w8g | chemistry | biomolecules | proteins-and-enzymes | <p>In an oligopeptide named Alanylglycylphenyl alanyl isoleucine, the number of $$\mathrm{sp}^{2}$$ hybridised carbons is __________.</p> | [] | null | 10 | <p>The given Oligopeptide has the following
structure</p><img src="https://app-content.cdn.examgoal.net/fly/@width/image/1lgz2hyuw/179012c9-360a-46d6-a505-c2816c9ddcf3/48b0d380-e4f2-11ed-bd4a-c953c0ce696e/file-1lgz2hyux.png?format=png" data-orsrc="https://app-content.cdn.examgoal.net/image/1lgz2hyuw/179012c9-360a-46d6-... | integer | jee-main-2023-online-12th-april-morning-shift | 723 |
1lgyg5fos | chemistry | biomolecules | proteins-and-enzymes | <p>The one that does not stabilize 2$$^\circ$$ and 3$$^\circ$$ structures of proteins is</p> | [{"identifier": "A", "content": "$$-$$O $$-$$O $$-$$linkage"}, {"identifier": "B", "content": "$$-$$S $$-$$S $$-$$linkage"}, {"identifier": "C", "content": "van der Waals forces"}, {"identifier": "D", "content": "H-bonding"}] | ["A"] | null | <p>The stabilization of secondary (2°) and tertiary (3°) structures of proteins mainly involves interactions such as disulfide bridges (S-S linkages), van der Waals forces, hydrogen bonding, and hydrophobic interactions.</p>
<p><b>Option A</b>: O-O linkage is not usually involved in the stabilization of protein structu... | mcq | jee-main-2023-online-10th-april-morning-shift | 724 |
1lh03ehcq | chemistry | biomolecules | proteins-and-enzymes | <p>Sulphur (S) containing amino acids from the following are:</p>
<p>(a) isoleucine (b) cysteine (c) lysine (d) methionine (e) glutamic acid</p> | [{"identifier": "A", "content": "b, d"}, {"identifier": "B", "content": "a, d"}, {"identifier": "C", "content": "b, c, e"}, {"identifier": "D", "content": "a, b, c"}] | ["A"] | null | Isoleucine is an $\alpha$-amino acid that is used in the biosynthesis of proteins. It contains an $\alpha$ amino group, an $\alpha$-carboxylic acid group, and a hydrocarbon side chain with a branch. It is classified as a non-polar, uncharged, branchedchain, aliphatic amino acid.<br><br>
Lysine is an $\alpha$-amino acid... | mcq | jee-main-2023-online-8th-april-morning-shift | 725 |
1lh28w6g2 | chemistry | biomolecules | proteins-and-enzymes | <p>Match List I with List II</p>
<p><style type="text/css">
.tg {border-collapse:collapse;border-spacing:0;}
.tg td{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px;
overflow:hidden;padding:10px 5px;word-break:normal;}
.tg th{border-color:black;border-style:solid;bo... | [{"identifier": "A", "content": "A-III, B-I, C-II, D-IV"}, {"identifier": "B", "content": "A-III, B-I, C-IV, D-II"}, {"identifier": "C", "content": "A-I, B-IV, C-III, D-II"}, {"identifier": "D", "content": "A-I, B-II, C-IV, D-III"}] | ["B"] | null | <p>Let's match the enzymes with the corresponding reactions:</p>
<ul>
<li>The enzyme that catalyzes the hydrolysis of sucrose to glucose and fructose is invertase. So, A matches with III.</li><br/>
<li>The enzyme that catalyzes the conversion of glucose to ethyl alcohol and CO(_2) (a step in fermentation) is zymase... | mcq | jee-main-2023-online-6th-april-morning-shift | 726 |
jaoe38c1lscqhxvw | chemistry | biomolecules | proteins-and-enzymes | <p>Which structure of protein remains intact after coagulation of egg white on boiling?</p> | [{"identifier": "A", "content": "Quaternary\n"}, {"identifier": "B", "content": "Primary"}, {"identifier": "C", "content": "Secondary\n"}, {"identifier": "D", "content": "Tertiary"}] | ["B"] | null | <p>The structure of protein that remains intact after the coagulation of egg white on boiling is the <strong>Primary</strong> structure. The correct answer is Option B.</p>
<p>The primary structure of a protein is the sequence of amino acids that are linked by peptide bonds. This sequence dictates the protein's higher... | mcq | jee-main-2024-online-27th-january-evening-shift | 728 |
jaoe38c1lsfjihy9 | chemistry | biomolecules | proteins-and-enzymes | <p>Type of amino acids obtained by hydrolysis of proteins is :</p> | [{"identifier": "A", "content": "$$\\gamma$$\n"}, {"identifier": "B", "content": "$$\\beta$$\n"}, {"identifier": "C", "content": "$$\\alpha$$\n"}, {"identifier": "D", "content": "$$\\delta$$"}] | ["C"] | null | <p>Proteins are natural polymers composed of $$\alpha$$-amino acids which are connected by peptide linkages.</p>
<p>Hence proteins upon acidic hydrolysis produce $$\alpha$$-amino acids.</p> | mcq | jee-main-2024-online-29th-january-morning-shift | 729 |
jaoe38c1lsfk7ge2 | chemistry | biomolecules | proteins-and-enzymes | <p>Number of compounds among the following which contain sulphur as heteroatom is ___________.</p>
<p>Furan, Thiophene, Pyridine, Pyrrole, Cysteine, Tyrosine</p> | [] | null | 2 | <p><img src="https://app-content.cdn.examgoal.net/fly/@width/image/1lt2qjsu0/4f9ca2ea-df04-494c-9f69-762d853ad9f6/49401a90-d489-11ee-9383-19a774a872fb/file-1lt2qjsu1.png?format=png" data-orsrc="https://app-content.cdn.examgoal.net/image/1lt2qjsu0/4f9ca2ea-df04-494c-9f69-762d853ad9f6/49401a90-d489-11ee-9383-19a774a872fb... | integer | jee-main-2024-online-29th-january-morning-shift | 730 |
lv40v8vs | chemistry | biomolecules | proteins-and-enzymes | <p>The total number of carbon atoms present in tyrosine, an amino acid, is ________.</p> | [] | null | 9 | <p>The structure of tyrosine is :</p>
<p><img src="https://app-content.cdn.examgoal.net/fly/@width/image/1lw597n92/cd9ca20b-44f1-49ae-ba25-fc02a62ddd42/7c1e2160-1150-11ef-83ee-c535c7d7d388/file-1lw597n93.png?format=png" data-orsrc="https://app-content.cdn.examgoal.net/image/1lw597n92/cd9ca20b-44f1-49ae-ba25-fc02a62ddd4... | integer | jee-main-2024-online-8th-april-evening-shift | 732 |
lv9s2lk7 | chemistry | biomolecules | proteins-and-enzymes | <p>Coagulation of egg, on heating is because of :</p> | [{"identifier": "A", "content": "Denaturation of protein occurs\n"}, {"identifier": "B", "content": "Biological property of protein remains unchanged\n"}, {"identifier": "C", "content": "Breaking of the peptide linkage in the primary structure of protein occurs\n"}, {"identifier": "D", "content": "The secondary structu... | ["A"] | null | <p>The coagulation of an egg on heating is because of <strong>Option A: Denaturation of protein occurs</strong>. When an egg is heated, the proteins in the egg (primarily albumins) undergo denaturation. This process involves the structural alteration of the protein molecules without breaking the peptide bonds that hold... | mcq | jee-main-2024-online-5th-april-evening-shift | 734 |
jLY8ENtJBMUyc3cU | chemistry | biomolecules | vitamins-and-nucleic-acids | RNA is different from DNA because RNA contains | [{"identifier": "A", "content": "ribose sugar and thymine"}, {"identifier": "B", "content": "ribose sugar and uracil"}, {"identifier": "C", "content": "deoxyribose sugar and thymine"}, {"identifier": "D", "content": "deoxyribose sugar and uracil"}] | ["B"] | null | In $$RNA,$$ the sugar is $$D$$-ribose and base is uracil where as in $$DNA$$, the sugar is $$D$$-$$2$$ deoxyribose and the nitrogeneous base is thymine. | mcq | aieee-2002 | 736 |
jL6YYBoCzBT9Mnuy | chemistry | biomolecules | vitamins-and-nucleic-acids | The reason for double helical structure of $$DNA$$ is operation of | [{"identifier": "A", "content": "dipole-dipole interaction"}, {"identifier": "B", "content": "hydrogen bonding"}, {"identifier": "C", "content": "electrostatic attractions "}, {"identifier": "D", "content": "van der Waals' forces"}] | ["B"] | null | $$DNA$$ consists of two polynucleotide chains, each chain forms a right handed spiral with ten bases in one turn of the spiral. The two chains coil to double helix and run in opposite direction held together by hydrogen bonding. | mcq | aieee-2003 | 737 |
TBPo9VJBXPkzOCYZ | chemistry | biomolecules | vitamins-and-nucleic-acids | Which base is present in RNA but not in DNA? | [{"identifier": "A", "content": "Uracil "}, {"identifier": "B", "content": "Thymine"}, {"identifier": "C", "content": "Guanine"}, {"identifier": "D", "content": "Cytosine"}] | ["A"] | null | $$RNA$$ contains cytosine and uracil as pyrimidine bases while $$DNA$$ has cytosine and thymine.
<br><br>Both have the same purine bases i.e., Guanine and adenine. | mcq | aieee-2004 | 738 |
Ufmrx2EyxtqgD60p | chemistry | biomolecules | vitamins-and-nucleic-acids | In both DNA and RNA, heterocyclic base and phosphate ester linkages are at- | [{"identifier": "A", "content": "$$C_5^{'}$$ and $$C_2^{'}$$ respectively of the sugar molecule"}, {"identifier": "B", "content": "$$C_2^{'}$$ and $$C_5^{'}$$ respectively of the sugar molecule"}, {"identifier": "C", "content": "$$C_1^{'}$$ and $$C_5^{'}$$ respectively of the sugar molecule"}, {"identifier": "D", "cont... | ["C"] | null | In $$DNA$$ and $$RNA$$ heterocyclic base and phosphate ester are at $${C_1}'$$ and $${C_5}'$$ respectively of the sugar molecule.
<br><br><img class="question-image" src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734265013/exam_images/wrovgr8g6fnhrq6anztu.webp" loading="lazy" alt="AIEEE 2005 Chemistry - Biom... | mcq | aieee-2005 | 739 |
k4ew6C8Q43Mw3sAj | chemistry | biomolecules | vitamins-and-nucleic-acids | The pyrimidine bases present in DNA are | [{"identifier": "A", "content": "cytosine and adenine"}, {"identifier": "B", "content": "cytosine and guanine"}, {"identifier": "C", "content": "cytosine and thymine "}, {"identifier": "D", "content": "cytosine and uracil "}] | ["C"] | null | DNA contains cytosine and thymine as pyrimidine bases and guanine and adenine as purine bases. | mcq | aieee-2006 | 740 |
ansyTTYSZi2QFdWS | chemistry | biomolecules | vitamins-and-nucleic-acids | The presence or absence of hydroxyl group on which carbon atom of sugar differentiates RNA and DNA ? | [{"identifier": "A", "content": "2<sup>nd</sup>"}, {"identifier": "B", "content": "3<sup>rd</sup> "}, {"identifier": "C", "content": "4<sup>th</sup>"}, {"identifier": "D", "content": "1<sup>st</sup> "}] | ["A"] | null | $$RNA$$ has $$D(-)$$- Ribose and the $$DNA$$ has $$2$$-Dexoy $$D(-)$$ $$-$$ribose as the carbohydrate unit.
<br><br><img class="question-image" src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734267017/exam_images/ndow929szjdn8dodx8dj.webp" loading="lazy" alt="AIEEE 2011 Chemistry - Biomolecules Question 147 E... | mcq | aieee-2011 | 741 |
bCoAkDQsvbeCdFkG | chemistry | biomolecules | vitamins-and-nucleic-acids | Which one of the following bases is <b>not</b> present in DNA? | [{"identifier": "A", "content": "Cytosine"}, {"identifier": "B", "content": "Thymine"}, {"identifier": "C", "content": "Quinoline"}, {"identifier": "D", "content": "Adenine"}] | ["C"] | null | $$DNA$$ contains adenine (A), thymine (T), guanine (G) and cytosine (C) bases.
<br><br>So quinoline is not present in $$DNA.$$ | mcq | jee-main-2014-offline | 742 |
bhTkYf8IO5wFi7hbbK90p | chemistry | biomolecules | vitamins-and-nucleic-acids | Which of the following is the correct structure of Adenosine? | [{"identifier": "A", "content": "<img src=\"https://app-content.cdn.examgoal.net/fly/@width/image/1l7u82fhs/a2523783-ee9e-4acd-9483-c777218967e9/31b67f00-301a-11ed-ab58-4f43f7f8c851/file-1l7u82fht.png?format=png\" data-orsrc=\"https://app-content.cdn.examgoal.net/image/1l7u82fhs/a2523783-ee9e-4acd-9483-c777218967e9/31b... | ["A"] | null | <p>The structure of adenosine is</p>
<img src="https://app-content.cdn.examgoal.net/fly/@width/image/1l3qsrt4h/d3420297-55ba-45ea-add1-dfefaca40fd1/29f0ba10-df07-11ec-b17a-f1edf5965e5d/file-1l3qsrt4i.png?format=png" data-orsrc="https://app-content.cdn.examgoal.net/image/1l3qsrt4h/d3420297-55ba-45ea-add1-dfefaca40fd1/29... | mcq | jee-main-2018-online-15th-april-morning-slot | 744 |
nsiapcJCNSjRpqOcdmCtz | chemistry | biomolecules | vitamins-and-nucleic-acids | Among the following compounds, which one is found in RNA ? | [{"identifier": "A", "content": "<img src=\"https://res.cloudinary.com/dckxllbjy/image/upload/v1734263286/exam_images/g2a5rvu7oqoaa0f6gyas.webp\" style=\"max-width: 100%; height: auto;display: block;margin: 0 auto;\" loading=\"lazy\" alt=\"JEE Main 2019 (Online) 11th January Morning Slot Chemistry - Biomolecules Quest... | ["C"] | null | ‘uracil’ is found in RNA.
<br><img src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734264436/exam_images/c3gwqbftvk6gucwerz9p.webp" style="max-width: 100%; height: auto;display: block;margin: 0 auto;" loading="lazy" alt="JEE Main 2019 (Online) 11th January Morning Slot Chemistry - Biomolecules Question 126 En... | mcq | jee-main-2019-online-11th-january-morning-slot | 745 |
4A8YA1GKIJUjMwmsAF3rsa0w2w9jx4yz9x9 | chemistry | biomolecules | vitamins-and-nucleic-acids | Which of the following statements is not true about RNA? | [{"identifier": "A", "content": "It controls the synthesis of protein"}, {"identifier": "B", "content": "It is present in the nucleus of the cell"}, {"identifier": "C", "content": "It usually does not replicate"}, {"identifier": "D", "content": "It has always double stranded $$\\alpha $$-helix structure"}] | ["D"] | null | RNA has a single standard helix structure.
<br><br>DNA has a double standard helix structure | mcq | jee-main-2019-online-12th-april-morning-slot | 746 |
5mmfxVtbZtr0qF7NUE7k9k2k5dz920k | chemistry | biomolecules | vitamins-and-nucleic-acids | Match the following :<br/>
(i) Riboflavin (a) Beriberi<br/>
(ii) Thiamine (b) Scurvy<br/>
(iii) Pyridoxine (c) Cheliosis<br/>
(iv) Ascorbic acid (d) Convulsions<br/> | [{"identifier": "A", "content": "(i)-(c), (ii)-(d), (iii)-(a), (iv)-(b)"}, {"identifier": "B", "content": "(i)-(d), (ii)-(b), (iii)-(a), (iv)-(c)"}, {"identifier": "C", "content": "(i)-c, (ii)-(a), (iii)-(d), (iv)-(b)"}, {"identifier": "D", "content": "(i)-(a), (ii)-(d), (iii)-(c), (iv)-(b)\n"}] | ["C"] | null | Thiamine (vitamin B<sub>1</sub>) : Beriberi
<br><br>Riboflavin (vitamin B<sub>2</sub>) : Cheilosis
<br><br>Pyridoxine (vitamin B<sub>6</sub>) : Convulsions
<br><br>Ascorbic acid (vitamin C) : Scurvy | mcq | jee-main-2020-online-7th-january-morning-slot | 747 |
gV2GC1RoAGl8RiZOWyjgy2xukf7swod4 | chemistry | biomolecules | vitamins-and-nucleic-acids | Which of the following will react with CHCl<sub>3</sub> +
alc. KOH? | [{"identifier": "A", "content": "Adenine and thymine"}, {"identifier": "B", "content": "Thymine and proline"}, {"identifier": "C", "content": "Adenine and lysine"}, {"identifier": "D", "content": "Adenine and proline"}] | ["C"] | null | Adenine and lysine both have primary anline react with CHCl<sub>3</sub> + alc. KOH.
<img src="https://res.cloudinary.com/dckxllbjy/image/upload/v1734264005/exam_images/y7qkwuqm3f84pjgyc4d9.webp" style="max-width: 100%;height: auto;display: block;margin: 0 auto;" loading="lazy" alt="JEE Main 2020 (Online) 4th September ... | mcq | jee-main-2020-online-4th-september-morning-slot | 748 |
KOHl5FYW6dAS5l09NH1kludzqls | chemistry | biomolecules | vitamins-and-nucleic-acids | Which of the following vitamin is helpful in delaying the blood clotting? | [{"identifier": "A", "content": "Vitamin K"}, {"identifier": "B", "content": "Vitamin C"}, {"identifier": "C", "content": "Vitamin E"}, {"identifier": "D", "content": "Vitamin B"}] | ["A"] | null | Vitamin K is helpful in delaying the blood
clotting. | mcq | jee-main-2021-online-26th-february-morning-slot | 750 |
rrI6YXMGjiI2fxj2Qc1kmm0d75c | chemistry | biomolecules | vitamins-and-nucleic-acids | Deficiency of vitamin K causes : | [{"identifier": "A", "content": "Cheilosis"}, {"identifier": "B", "content": "Decrease in blood clotting time"}, {"identifier": "C", "content": "Increase in blood clotting time"}, {"identifier": "D", "content": "Increase in fragility of RBC's"}] | ["C"] | null | Deficiency of vitamin K causes increase in blood clotting time. | mcq | jee-main-2021-online-18th-march-evening-shift | 752 |
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