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%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.

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 |
 91%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.

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.
Subtopic:  Carbohydrates - Classification & D-L configuration |
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.

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 |
 70%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.

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) 
Subtopic:  Denaturation of Proteins & Chemical Properties |
 63%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.

Vitamin that cannot be stored in our body is-
1. Vitamin K
2. Vitamin C
3. Vitamin E
4. Vitamin A
Subtopic:  Vitamins, Hormones & Enzymes |
 84%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.

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
Subtopic:   DNA, RNA & Metal Ions |
 80%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.

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.
Subtopic:   DNA, RNA & Metal Ions |
 87%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.