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Consider the following statements: Assertion (A): A carboxylic acid does not give the test for carbonyl group. Reason (R): The carbonyl carbon o
Question

Consider the following statements:
Assertion (A): A carboxylic acid does not give the test for carbonyl group.
Reason (R): The carbonyl carbon of the carboxylic group is electron deficient and hence it is less susceptible to nucleophilic attack.
Select the correct answer using the codes given below:

A.

(A) is false but (R) is true

B.

Both (A) and (R) are true and (R) is not the correct explanation of (A)

C.

(A) is true but (R) is false

D.

Both (A) and (R) are true and (R) is the correct explanation of (A)

Correct option is C

The correct answer is (c) (A) is true but (R) is false

Explanation:
Assertion (A) is true: Carboxylic acids do not give characteristic tests of the carbonyl group (like with 2,4-DNP or NaHSO₃).
Reason (R) is false: The carbonyl carbon in carboxylic acids is less electron deficient (less electrophilic) than in aldehydes/ketones because of resonance with the lone pair on the -OH oxygen.
• This resonance reduces the electrophilic character of the carbonyl carbon.

Information Booster:
• Carboxylic acids behave as a single functional group rather than separate carbonyl and hydroxyl groups.
• They undergo Nucleophilic Acyl Substitution rather than Nucleophilic Addition.

Additional Knowledge:
Option A
• Incorrect as (A) is a well-known chemical property.
Option B & D
• Incorrect as the reason provided (R) is scientifically inaccurate regarding electron deficiency.

So the correct answer is (c)

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