The compound formed as a result of oxidation of ethyl benzene by $\mathrm{KMnO}_4$ is

The compound formed as a result of oxidation of ethyl benzene by $\mathrm{KMnO}_4$ is
  1. benzophenone
  2. acetophenone
  3. benzoic acid
  4. benzyl alcohol

Solution

Any aliphatic carbon with hydrogen attached to it, in combination with benzene ring, will be oxidized to benzoic acid by $\mathrm{KMnO}_4 / \mathrm{H}^{+}$. Hence, (C) is correct.

Asked in: JEE Main 2007

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