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The major product Z obtained in the following reaction scheme is:

ChemistryAminesJEE MainJEE Main 2020 (09 Jan Shift 1)
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When a diazonium salt is treated with copper (I) chloride (Cu2Cl2Cu2Cl2) or copper (I) bromide (Cu2Br2), the corresponding haloarene is formed. This reaction is known as Sandmeyer reaction. It is used for introducing a chloro or bromo group in the benzene ring.

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