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JEE Advanced levelOne or more correct optionsDifficulty 3 of 3nc145

When an aqueous solution of benzenediazonium chloride is warmed, which statements are correct?

  1. ANitrogen gas is evolved.
  2. BPhenol is formed.
  3. CAniline is formed.
  4. DA cuprous salt is essential for the reaction.

Answer: A, B

Hydrolysis of the diazonium salt gives phenol, HCl and gas. No copper catalyst is needed (that is needed for Sandmeyer substitution by Cl, Br or CN), and aniline is not regenerated.
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