Question

The reaction between p-methyl benzaldehyde and conc. NaOH is an example of

• A. Cannizzaro reaction
• B. Aldol condensation
• C. Hydrolysis
• D. Haloform reaction

Answer 1

Answer: (A)

Cannizzaro reaction

Answer 2

Cannizzaro reaction

Aldehydes that do not contain an $\alpha$ -hydrogen atom, when treated with conc. NaOH solution undergo disproportionation, i.e. self reduction oxidation. As a result, one molecule of the aldehyde is reduced to corresponding alcohol and the other is oxidised to corresponding carboxylic acid.This is known as Cannizzaro reaction.

The reaction of p-methyl benzaldehyde and $NaOH$ is an example of Cannizzaro reaction..