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Identify the compound Y in the following...

Identify the compound Y in the following reaction.

A

B

C

D

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The correct Answer is:
A
When a primary aromatic amine, dissolved or suspended in cold aqueous mineral acid and treated with sodium nitrite, a diazonium salt is formed. When this freshly prepared diazonium salt is mixed with cuprous chloride, then diazonium group is replaced by-CL.
Then chlorobenzene is formed which is y in this reaction.

Hence, option (a) is correct.
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