Question

The Cannizzaro's reaction is not given by

• A. trimethyl acetaldehyde
• B. acetaldehyde
• C. benzaldehyde
• D. fonnaldehyde

Answer 1

Answer: (B)

acetaldehyde

Answer 2

Aldehydes lacking presence of $\alpha-H$ undergo Cannizzaro reaction. When treated with aqueous base $CH_3CHO$ does not undergo Cannizzaro reaction because it has $\alpha-H$ and in the presence of aqueous base it undergoes aldol condensation.