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Chlorobenzene reacts with Mg in dry ether to give a compound (A) which further reacts with ethanol to yield:

1. Phenol
2. Benzene
3. Ethylbenzene
4. Phenyl ether

Correct answer: Benzene

Solution

Chlorobenzene reacts with Mg in dry ether to form phenyl magnesium chloride (Grignard reagent). When this reacts with ethanol, it forms benzene as the product due to the acidic nature of ethanol, which protonates the phenyl group.

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