Chlorination of toluene in the presence of ferric chloride gives........

The compounds $P$,$Q$,and $S$ were separately subjected to nitration using $HNO_3 / H_2SO_4$ mixture. The major product formed in each case respectively,is

$p-$Nitrobromobenzene can be converted to $p-$nitroaniline by using $NaNH_2$. The reaction proceeds through the intermediate named

The major product obtained by monobromination of the following compound with $Br_2/ FeBr_3$ is:

The reaction of an aryl halide with sodium metal in the presence of dry ether to form a biphenyl is known as:

Identify the name of the reaction in which an aryl halide reacts with an alkyl halide and sodium metal in dry ether to produce substituted aromatic compounds.