JEE Main levelSingle correct optionDifficulty 2 of 3si200
Aniline is treated with NaNOX2/HCl at 273 K to give A. A is warmed with CuBr/HBr to give B. B is converted to a Grignard reagent C with Mg in dry ether. C is treated with dry COX2 and then dilute acid to give D. D is
Aphenylethanoic acid, CX6HX5CHX2COOH
Bbenzoic acid
Cphenylmethanol
Dbenzene
Answer: B
A is benzenediazonium chloride, B is bromobenzene (Sandmeyer), C is CX6HX5MgBr. A Grignard reagent adds to COX2 to give a carboxylate, which on acidification gives CX6HX5COOH, benzoic acid.