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Q. No.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
1. Fehling solution
2. Tollen's reagent
3. Bromine water
4. All of the above
Subtopic: Carbohydrates - Classification & D-L configuration |
From NCERT
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In both DNA and RNA, heterocyclic base and phosphate ester linkages are at:
| 1. | C5' and C1' respectively of the sugar molecule. |
| 2. | C1' and C5' respectively of the sugar molecule. |
| 3. | C2' and C5' respectively of the sugar molecule. |
| 4. | C5' and C2' respectively of the sugar molecule. |
Subtopic: α - Amino Acids, Peptide Bond, Proteins & Structure |
79%
From NCERT
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The correct statement among the following is:
| 1. | Melting points and solubility in the water of amino acids are higher than haloacids. |
| 2. | Melting points and solubility in water of halo acids are higher than amino acids. |
| 3. | Both amino acids and haloacids have comparable melting point. |
| 4. | None of the above |
Subtopic: α - Amino Acids, Peptide Bond, Proteins & Structure |
71%
From NCERT
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Which of the following is not an essential amino acid :
| 1. | Valine | 2. | Leucine |
| 3. | Lysine | 4. | Tyrosine |
Subtopic: α - Amino Acids, Peptide Bond, Proteins & Structure |
72%
From NCERT
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The RBC deficiency is a deficiency disease of:
| 1. | Vitamin B1 | 2. | Vitamin B2 |
| 3. | Vitamin B12 | 4. | Vitamin B6 |
Subtopic: Vitamins, Hormones & Enzymes |
86%
From NCERT
NEET - 2021
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Lactose is a disaccharide composed of:
| 1. | \(\alpha - D-\)Glucose and \(\beta-D-\)Galactose |
| 2. | \(\beta-D-\)Glucose and \(\beta-D-\)Galactose |
| 3. | \(\beta - D-\)Glucose and \(\alpha-D-\)Galactose |
| 4. | \(\alpha - D-\)Glucose and \(\alpha-D-\)Galactose |
Subtopic: Polysaccharides & their Importance |
63%
From NCERT
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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%
From NCERT
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Amino acids exhibit amphoteric behavior as:
1. They can act both as an acid and as a base.
2. They can act only as an acid but not as a base.
3. They can act only as a base but not an acid.
4. None of the above.
Subtopic: α - Amino Acids, Peptide Bond, Proteins & Structure |
95%
From NCERT
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α-helix structure of proteins is stabilized by :
| 1. | H-bonds formed between the −SH and C=O group. |
| 2. | H-bonds formed between the −NH and C=O group. |
| 3. | Ionic bonds formed between the −SH and C=O group. |
| 4. | Ionic bonds formed between the −NH and C=O group. |
Subtopic: α - Amino Acids, Peptide Bond, Proteins & Structure |
86%
From NCERT
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Reducing sugars are -
| 1. | Carbohydrates that reduce Fehling’s solution and Tollen’s reagent. |
| 2. | Carbohydrates that reduce only Tollen’s reagent. |
| 3. | Carbohydrates that reduce only Fehling’s solution . |
| 4. | Carbohydrates that reduce HI |
Subtopic: Carbohydrates - Classification & D-L configuration |
93%
From NCERT
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