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(D) The preparation of chlorobenzene from aniline involves two main steps: $1$. Diazotization: Aniline reacts with $HNO_2$ (formed in situ from $NaNO_

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$HNO_2$,$HCl$ followed by $Cu_2Cl_2$

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(D) The preparation of chlorobenzene from aniline involves two main steps: $1$. Diazotization: Aniline reacts with $HNO_2$ (formed in situ from $NaNO_2 + HCl$) at $0-5 \ ^\circ C$ to form benzene diazonium chloride. $2$. Sandmeyer reaction: The benzene diazonium chloride is then treated with cuprous chloride $(Cu_2Cl_2)$ in the presence of $HCl$ to yield chlorobenzene. Therefore,the sequence $HNO_2, HCl$ followed by $Cu_2Cl_2$ is the correct method.

Which reagent is most suitable for the preparation of chlorobenzene from aniline?

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