Question

Aldol condensation is given by

• A. trimethylacetaldehyde
• B. acetaldehyde
• C. benzaldehyde
• D. formaldehyde

Hint:

Aldol condensation occurs when an aldehyde or ketone undergoes a reaction at its alpha position, forming a β-hydroxy aldehyde or ketone, which then undergoes dehydration.

Answer 1

The Correct Option is B

Step 1: Aldol condensation.
Aldol condensation typically involves the reaction of aldehydes or ketones with at least one alpha-hydrogen. Acetaldehyde, being a simple aldehyde with alpha-hydrogens, undergoes aldol condensation.

Step 2: Conclusion.
Thus, the correct answer is option (B).

Final Answer: \[ \boxed{\text{(B) acetaldehyde}} \]