Question

Which of the following statements regarding aldol condensation is TRUE?

• A. It is a nucleophilic addition elimination reaction.
• B. It is self redox reaction.
• C. It is a disproportionation reaction.
• D. It is exhibited by lower aldehydes only.

Hint:

Aldol condensation is nucleophilic addition followed by elimination of water.

Answer 1

The Correct Option is A

Step 1: Eliminate Wrong Statements
(B) and (C) describe the Cannizzaro reaction, so they are false.
(D) is false as ketones with $\alpha$-H also react.

Step 2: Remaining Statement
Only addition followed by elimination describes aldol condensation.

Step 3: Result
Option (A) is true.

Final Answer:
Only the addition then elimination description fits aldol condensation. \[ \boxed{\text{(A) }\text{It is a nucleophilic addition elimination reaction.}} \]