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Q. No.Given below are two statements:
| Assertion (A): | Glucose or sucrose are soluble in water but cyclohexane or benzene are insoluble in water. |
| Reason (R): | Glucose and sucrose undergo extensive H-bonding with water while cyclohexane or benzene does not. |
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
| 3. | (A) is true but (R) is false. |
| 4. | Both (A) and (R) are false. |
Subtopic: Carbohydrates - Classification & D-L configuration |
88%
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The products of hydrolysis of lactose are-
| 1. | Two molecules of glucose |
| 2. | One molecule of glucose and one molecule of galactose |
| 3. | One molecule of glucose and one molecule of fructose |
| 4. | Two molecules of fructose |
Subtopic: Polysaccharides & their Importance |
89%
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Pentaacetate of D-glucose reaction with NH2OH justifies the :
1. Absence of aldehyde group.
2. Presence of ketone group.
3. Presence of aldehyde group.
4. Presence of alcohol group.
1. Absence of aldehyde group.
2. Presence of ketone group.
3. Presence of aldehyde group.
4. Presence of alcohol group.
Subtopic: Carbohydrates - Classification & D-L configuration |
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The correct statement among the following is-
| 1. | Melting points and solubility in 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 |
68%
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Correct statement among the following regarding the water present in egg upon boiling is:
1. Precipitated out.
2. Adsorbed by the coagulated protein.
3. Absorbed by the eggshell.
4. Both (1) and (3)
1. Precipitated out.
2. Adsorbed by the coagulated protein.
3. Absorbed by the eggshell.
4. Both (1) and (3)
Subtopic: Denaturation of Proteins & Chemical Properties |
62%
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Vitamin that cannot be stored in our body is-
1. Vitamin K
2. Vitamin C
3. Vitamin E
4. Vitamin A
1. Vitamin K
2. Vitamin C
3. Vitamin E
4. Vitamin A
Subtopic: Vitamins, Hormones & Enzymes |
83%
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Hydrolysed product(s) of nucleotide of thymine among the following is -
1. Phosphoric acid and ATP
2. Phosphoric acid and Thymine β-D-2-deoxyribose
3. Thymine β-D-2-ribose and sulphuric acid
4. None of the above
1. Phosphoric acid and ATP
2. Phosphoric acid and Thymine β-D-2-deoxyribose
3. Thymine β-D-2-ribose and sulphuric acid
4. None of the above
Subtopic: DNA, RNA & Metal Ions |
78%
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RNA upon hydrolysis, generates different quantities of different bases. It shows that RNA is :
1. Doubly - stranded.
2. Single - stranded.
3. Triple - helical in structure.
4. Having deoxyribose sugar.
1. Doubly - stranded.
2. Single - stranded.
3. Triple - helical in structure.
4. Having deoxyribose sugar.
Subtopic: DNA, RNA & Metal Ions |
86%
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