Which of the following sets of reagents can be used to convert chlorobenzene into benzene? — Aromatic Hydrocarbons Chemistry Question

💡 Solution & Explanation

Chlorobenzene can be converted to phenylmagnesium chloride using $Mg/\text{dry ether}$, which upon hydrolysis ($H_2O$) yields benzene. Alternatively, it can be directly reduced using a $Ni-Al$ alloy in aqueous $NaOH$. Zinc dust is used for deoxygenating phenols. $NaNO_2/HCl$ is used for diazotizing anilines.