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Q. No.Consider the following reactions:
'x', 'y', and 'z' in the above-given reactions are, respectively:
1. 5, 4, and 5
2. 4, 6, and 5
3. 4, 5, and 5
4. 5, 6, and 5
| (i) | \(\small\text {Glucose + ROH} \xrightarrow { \text {dry HCl}} \text {Acetal} \xrightarrow [(CH_3CO)_2O] { x~ eq. of} \text {acetyl derivative}\) |
| (ii) | \(\text {Glucose } \xrightarrow { \text {Ni}/H_2} \text {A} \xrightarrow [(CH_3CO)_2O] { y~ eq. of} \text {acetyl derivative}\) |
| (iii) | \(\text {Glucose } \xrightarrow [(CH_3CO)_2O] { z~ eq. of} \text {acetyl derivative}\) |
1. 5, 4, and 5
2. 4, 6, and 5
3. 4, 5, and 5
4. 5, 6, and 5
Subtopic: Carbohydrates - Classification & D-L configuration |
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Which of the following is true about a glycosidic linkage?
1. It contains a carbonyl bond.
2. It contains an ether bond.
3. It contains an ester bond.
4. It contains an amide bond.
1. It contains a carbonyl bond.
2. It contains an ether bond.
3. It contains an ester bond.
4. It contains an amide bond.
Subtopic: Carbohydrates - Classification & D-L configuration |
From NCERT
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| Statement I: | Pentaacetate of cyclic glucose reacts with hydroxylamine |
| Statement II: | Glucose on oxidation with nitric acid yields gluconic acid. |
| 1. | Statement I is correct but Statement II is incorrect |
| 2. | Statement I is incorrect but Statement II is correct |
| 3. | Both Statement I and Statement II are correct |
| 4. | Both Statement I and Statement II are incorrect |
Subtopic: Carbohydrates - Classification & D-L configuration |
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Consider the sugars labeled X and Y in the image. Which of the following statements about sugars X and Y is/are not correct?
Option:
1. a, b
2. a, d
3. a, c, d
4. b, c
| a. | X is a reducing sugar and Y is a non-reducing sugar. |
| b. | X is a non-reducing sugar and Y is a reducing sugar. |
| c. | The glucosidic linkages in X and Y are \(\alpha\) and \(\beta\) respectively. |
| d. | The glucosidic linkages in X and Y are \(\beta\) and \(\alpha\) respectively. |
1. a, b
2. a, d
3. a, c, d
4. b, c
Subtopic: Carbohydrates - Classification & D-L configuration |
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Subtopic: Carbohydrates - Classification & D-L configuration |
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The fisher presentation of D-glucose is given below.
The correct structure(s) of -L-glucopyranose is (are):
| 1. |  |
2. |  |
| 3. |  |
4. |  |
Subtopic: Carbohydrates - Classification & D-L configuration |
From NCERT
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Which reagent is used to distinguish glucose and fructose?
1. Fehling's solution
2. Tollen's reagent
3. Br2 water
4. All of the above
1. Fehling's solution
2. Tollen's reagent
3. Br2 water
4. All of the above
Subtopic: Carbohydrates - Classification & D-L configuration |
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Given below are two statements:
In the light of the above statements, choose the correct answer from the options given below:
| Statement I: | Glycogen is similar to amylose in its structure. |
| Statement II: | Glycogen is found in yeast and fungi also. |
| 1. | Statement I is correct and Statement II is incorrect. |
| 2. | Statement I is incorrect and Statement II is correct. |
| 3. | Both Statement I and Statement II are correct. |
| 4. | Both Statement I and Statement II are incorrect. |
Subtopic: Polysaccharides & their Importance |
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NEET - 2024
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NEET 2026 - Target Batch - Vital
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| Assertion (A): | Deoxyribose, , is not a carbohydrate. |
| Reason (R): | Carbohydrates are hydrates of carbon so compounds that follow the formula are carbohydrates. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are False. |
| 3. | (A) is True but (R) is False. |
| 4. | (A) is False but (R) is True. |
Subtopic: Polysaccharides & their Importance |
From NCERT
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NEET 2026 - Target Batch - Vital
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NEET 2026 - Target Batch - Vital
Subtopic: α - Amino Acids, Peptide Bond, Proteins & Structure |
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