Q. No.Fructose reduces Tollen's reagent due to:
| 1. | Primary alcoholic group |
| 2. | Secondary alcoholic group |
| 3. | Enolisation of fructose followed by conversion to aldehyde by base |
| 4. | Asymmetric carbon |
Subtopic: Carbohydrates - Classification & D-L configuration |
73%
Level 2: 60%+
AIPMT - 2010
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Monosaccharides are:
| 1. | Carbohydrates that can't be hydrolysed further to give simpler units of polyhydroxy aldehyde or ketone. |
| 2. | Classified on the basis of the number of carbon atoms and the functional group present in them. |
| 3. | The monomers of carbohydrates. |
| 4. | All of the above. |
Subtopic: Carbohydrates - Classification & D-L configuration |
85%
Level 1: 80%+
Hints
Glucose and Fructose can be distinguished by the use of :
1. Fehling solution
2. Tollen's reagent
3. Bromine water
4. All of the above
Subtopic: Carbohydrates - Classification & D-L configuration |
Level 3: 35%-60%
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Consider the following statements:
The correct statements are:
1. (a) and (b) only
2. (b) and (c) only
3. (a) and (c) only
4. (a), (b) and (c)
| a. | Glucose is also known as dextrose. |
| b. | Glucose is oxidized to saccharic acid using bromine water. |
| c. | \(\alpha - \text D (+) -\) Glucose contains five chiral centers. |
The correct statements are:
1. (a) and (b) only
2. (b) and (c) only
3. (a) and (c) only
4. (a), (b) and (c)
Subtopic: Carbohydrates - Classification & D-L configuration |
59%
Level 3: 35%-60%
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The major product obtained when glucose reacts with bromine water among the following is:
1. Gluconic acid
2. Glyceraldehyde
3. Sorbitol
4. Saccharic acid
Subtopic: Carbohydrates - Classification & D-L configuration |
83%
Level 1: 80%+
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Subtopic: Carbohydrates - Classification & D-L configuration |
73%
Level 2: 60%+
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Subtopic: Carbohydrates - Classification & D-L configuration |
70%
Level 2: 60%+
NEET - 2022
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D configuration is shown by:
 |
 |
 |
| (i) | (ii) | (iii) |
1. i, ii and iii
2. ii and iii
3. i and ii
4. Only iii
Subtopic: Carbohydrates - Classification & D-L configuration |
71%
Level 2: 60%+
Hints
Identify the anomeric carbon in the given structure of \(\alpha-D-\) glucopyranose:
| 1. | C1 | 2. | C2 and C3 |
| 3. | C4 and C5 | 4. | C6 |
Subtopic: Carbohydrates - Classification & D-L configuration |
79%
Level 2: 60%+
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The incorrect statement among the following regarding glucose is:
| 1. | It is an aldohexose. |
| 2. | n-Hexane is formed when glucose is heating with HI. |
| 3. | It is present in furanose form. |
| 4. | It does not give 2, 4- DNP test. |
Subtopic: Carbohydrates - Classification & D-L configuration |
81%
Level 1: 80%+
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