Which reaction is used to convert benzene diazonium chloride to bromobenzene?

How will you obtain monobromobenzene from aniline?

In Gattermann reaction,a diazonium group is replaced by $\underline{X}$ using $\underline{Y}$. $\underline{X}$ and $\underline{Y}$ are:
$\underline{X} \quad \underline{Y}$

Why can aryl halides not be prepared by the reaction of phenol with $HCl$ in the presence of $ZnCl_{2}$?

Conversion of benzene diazonium chloride to chlorobenzene is an example of which of the following reactions?

Describe the preparation of aryl halides from aromatic hydrocarbons and from amines via the Sandmeyer reaction.