Which of the following gives condensation with hydroxyl amine but does not undergo self condensation?

• Correct answer
  A

  Methanal
• B

  Propanal
• C

  Acetone
• D

  Ethanal

Solution

Methanal does not contain $\alpha$ -hydrogen atom, hence it does not undergo self condensation.

Hence, the correct answer is option: 'A'.