The reaction of benzene with chlorine in the presence of $Fe$ produces.........

The compound from which chlorobenzene cannot be prepared easily is

$(i)$ Chlorobenzene and $(ii)$ benzene hexachloride are obtained from benzene by the reaction of chlorine,in the presence of

The conversion of benzene diazonium chloride to bromobenzene can be accomplished by

Nitration of toluene is followed by reduction with $Sn + HCl$. The product obtained is then subjected to diazotization followed by heating with $Cu_2Br_2 + HBr$. What is the final product?

Which among the following is true for the Balz-Schiemann reaction?