Question

Identify the total number of compounds from the following which will yield monocarboxylic acid on oxidation with $KMn{O}_4$ in acidic medium.

Answer 1

Answer: 3

In case of aromatic compounds, the complete side chain (consisting of an alkyl group) is oxidised to $-COOH$ group irrespective of the length of the chain except in case of tert-butylbenzene. In case of cyclohexene, it gives dicarboxylic acid.

$\therefore$ Compounds (i), (ii) and (v) will yield monocarboxylic acids on oxidation with $KMn{O}_4$ in acidic medium.