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JEE Main levelSingle correct optionDifficulty 2 of 3si128

Bromobenzene is stirred with magnesium in dry ether to give A. A reacts with methanal and the product is hydrolysed with dilute acid to give B. B is

  1. Aphenol
  2. Bbenzyl alcohol
  3. Cbenzoic acid
  4. D1-phenylethanol

Answer: B

A is phenylmagnesium bromide. It adds to to give , which on hydrolysis gives . With another aldehyde the product would be a secondary alcohol and with it would be benzoic acid.
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