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JEE Main levelSingle correct optionDifficulty 2 of 3co118

1-(4-Methylphenyl)ethan-1-one is heated with excess $NaOCl$ in aqueous $NaOH$ and then acidified. The organic acid formed is

Abenzene-1,4-dicarboxylic acid
B2-(4-methylphenyl)ethanoic acid
C4-methylbenzoic acid
Dbenzoic acid

Answer: C

The

COCH X_{3}

group is converted into

COO X^{-}

with loss of

CHCl X_{3}

. The ring methyl group is not oxidised by hypochlorite under these mild conditions, so 4-methylbenzoic acid is obtained.

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