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Question 790004
JEE Chemistry · Medium

Aldehydes, Ketones and Carboxylic Acids: Aldol condensation MCQ

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Aldol condensationMediumQuestion 790004

Question

Aldol condensation of ethanal (CH₃CHO) with dilute NaOH gives:
  1. A
    3-hydroxybutanal (aldol product)
    Correct
  2. B
    Butanal
  3. C
    Ethanol
  4. D
    Acetic acid

Correct answer

3-hydroxybutanal (aldol product)

Explanation

In aldol reaction: the α-carbon of one ethanal attacks the carbonyl of another. Product: CH₃CH(OH)CH₂CHO (3-hydroxybutanal). Heating (dehydration) gives but-2-enal (crotonaldehyde).

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