Benzene reacts with $n-$propyl chloride in the presence of anhydrous $AlCl_3$ to give predominantly :

Gammexane is obtained from benzene when it reacts with

Nitration is an example of aromatic electrophilic substitution reaction and its rate depends upon the group already present in the benzene ring. Out of benzene and phenol,which one is more easily nitrated?

Rank the following compounds in order of increasing rate of reaction towards Electrophilic Aromatic Substitution $(EAS)$ with bromine in the presence of $FeBr_3$.

The product obtained by the reaction of benzene with concentrated $HNO_3$ and concentrated $H_2SO_4$ at $353$ to $363 \, K$ is....

$ClCH_2-CH_2Cl$ $\xrightarrow[(ii) NaNH_2]{(i) Alc. KOH}$ $A$ $\xrightarrow{\text{Red hot Fe tube}}$ $B$
Identify product $B$ in the above reaction sequence.