Question

Cannizzaro reaction will be given by:

• A. (i), (ii), (iii)
• B. (i) and (ii)
• C. (ii) and (iii)
• D. (i) and (iv)

Answer 1

The correct option is C (ii) and (iii)

In Cannizzaro reaction aldehydes which do not have $\alpha -$hydrogen atom undergo self-oxidation and reduction (disproportion) reaction on heating with concentrated alkali.

Compound (i) and (iv) have $\alpha -$H, so they won't undergo Cannizzaro reaction.
Compound (ii) and (iii) do not have $\alpha -$H, so they will undergo Cannizzaro reaction.
Hence, option (c) is the correct answer.