Ncert Exercises & Solutions

Select the correct option based on statements below:

Assertion (A):	Aldehydes and ketones both react with Tollen’s reagent to form a silver mirror.
Reason (R):	Both aldehydes and ketones contain a carbonyl group.

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.	(A) is false but (R) is true.

Hint: Both aldehyde and ketone contain the carbonyl group.

Aldehydes but not ketones react with Tollen’s reagent to form a silver mirror. Tollens' reagent is a weak oxidizing agent and did not oxidise ketone.

Aldehyde and ketone both contain the carbonyl group. Hence, the Assertion is wrong and but Reason is a correct statement.