Q. No.Given below are two statements:
1. Statement-I is true and Statement-II is false.
2. Statement-I is false and Statement-II is true.
3. Only Statement-I is correct.
4. Only Statement-II is correct.
| Statement-I : | Sucrose is dextrorotatory but upon hydrolysis it becomes laevorotatory. |
| Statement-II: | Sucrose on hydrolysis gives glucose and fructose such that the levorotation of glucose is more than dextrorotation of fructose. |
1. Statement-I is true and Statement-II is false.
2. Statement-I is false and Statement-II is true.
3. Only Statement-I is correct.
4. Only Statement-II is correct.
Subtopic: Carbohydrates - Classification & D-L configuration |
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Which of the following statements about the carbohydrate "Ribose" present in DNA is correct?
A. A pentose sugar
B. Present in pyranose from
C. “D” configuration
D. A reducing sugar, when free
E. \(\alpha\)-anomeric form
Choose the correct answer from the options given below:
1. A, C and D Only
2. A, B and E Only
3. B, D and E Only
4. A, D and E Only
A. A pentose sugar
B. Present in pyranose from
C. “D” configuration
D. A reducing sugar, when free
E. \(\alpha\)-anomeric form
Choose the correct answer from the options given below:
1. A, C and D Only
2. A, B and E Only
3. B, D and E Only
4. A, D and E Only
Subtopic: Carbohydrates - Classification & D-L configuration | DNA, RNA & Metal Ions |
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Given below are two statements:
| Statement I: | Fructose does not contain an aldehydic group but still reduces Tollen’s reagent. |
| Statement II: | In the presence of base, fructose undergoes rearrangement to give glucose. |
| 1. | Statement I is false but Statement II is true. |
| 2. | Both Statement I and Statement II are true. |
| 3. | Both Statement I and Statement II are false. |
| 4. | Statement I is true but Statement II is false. |
Subtopic: Carbohydrates - Classification & D-L configuration |
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Given below are two statements:
| Statement I: | Wet cotton cloths made up of cellulose based carbohydrate takes comparatively longer time to get dried than wet nylon based clothes. |
| Statement II: | Intermolecular hydrogen bonding with water molecule is more in nylon based clothes than in cotton clothes. |
| 1. | Statement I and Statement II both are correct. |
| 2. | Statement I is correct but Statement II is incorrect. |
| 3. | Statement I is incorrect but Statement II is correct. |
| 4. | Both Statement are incorrect. |
Subtopic: Carbohydrates - Classification & D-L configuration |
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Subtopic: Carbohydrates - Classification & D-L configuration |
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Match List–I (Carbohydrates) with List – II (Cyclic Structures) and select the correct option:
1. A – 4; B – 1; C – 2; D – 3
2. A – 1; B – 4; C – 3; D – 2
3. A – 2; B – 3; C – 4; D – 1
4. A – 1; B – 3; C – 2; D – 4
| List - I (Carbohydrates) |
List - II (Cyclic Structures) |
||
| A. | α − D −Glucopyranose | 1. |  |
| B. | β −D − Glucopyranose | 2. |  |
| C. | α − D − Fructofuranose | 3. |  |
| D. | β − D −Fructofuranose | 4. |  |
1. A – 4; B – 1; C – 2; D – 3
2. A – 1; B – 4; C – 3; D – 2
3. A – 2; B – 3; C – 4; D – 1
4. A – 1; B – 3; C – 2; D – 4
Subtopic: Carbohydrates - Classification & D-L configuration |
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Which of the following cyclic forms represents the pyranose form of the linear carbohydrate shown in the image?
| 1. |  |
2. |  |
| 3. |  |
4. |  |
Subtopic: Carbohydrates - Classification & D-L configuration |
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A biomolecule gives the following observations:
The correct structure of the biomolecule, from the following, is:
| (i) | With Br2/H2O, it gives monocarboxylic acid |
| (ii) | With acetate, it gives tetraacetate |
| (iii) | With HI/Red P, it gives isopentane |
The correct structure of the biomolecule, from the following, is:
| 1. |  |
2. |  |
| 3. |  |
4. |  |
Subtopic: Carbohydrates - Classification & D-L configuration |
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Two monomers in maltose are:
1. \(\alpha\)-D-glucose and \(\beta\)-D-glucose
2. \(\alpha\)-D-glucose and \(\alpha\)-D-Fructose
3. \(\alpha\)-D-glucose and \(\alpha\)-D-galactose
4. \(\alpha\)-D-glucose and \(\alpha\)-D-glucose
1. \(\alpha\)-D-glucose and \(\beta\)-D-glucose
2. \(\alpha\)-D-glucose and \(\alpha\)-D-Fructose
3. \(\alpha\)-D-glucose and \(\alpha\)-D-galactose
4. \(\alpha\)-D-glucose and \(\alpha\)-D-glucose
Subtopic: Carbohydrates - Classification & D-L configuration |
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What is the number of stereocenters in the linear and cyclic forms of glucose, respectively?
| 1. | 4 & 4 | 2. | 4 & 5 |
| 3. | 5 & 4 | 4. | 5 & 5 |
Subtopic: Carbohydrates - Classification & D-L configuration |
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