JEE Main Chemistry question
[Roorkee 1996] The reaction C₆H₅N₂Cl —(Cu₂Cl₂/HCl)→ C₆H₅Cl + N₂ is called
Answer: (B)
Solution
Replacement of a diazonium group by a halogen using a cuprous halide catalyst is the defining step of the Sandmeyer reaction.