The product obtained by the nitration of nitrobenzene is.....

Choose the correct set of reagents for the following conversion.

Which of the following organic chlorides will not give a Friedel-Craft alkylation product when heated with benzene and $AlCl_3$?

Assertion : $S_{N}2$ reactions always proceed with inversion of configuration.
Reason : $S_{N}2$ reaction of an optically active aryl halide with an aqueous solution of $KOH$ always gives an alcohol with opposite sign of rotation.

The compound $C_{7}H_{8}$ undergoes the following reactions:
$C_{7}H_{8}$ $\xrightarrow{3Cl_{2} / \Delta} A$ $\xrightarrow{Br_{2} / Fe} B$ $\xrightarrow{Zn / HCl} C$
The product '$C$' is

Which among the following statements is true about the reactivity of haloarenes towards nucleophilic substitution reactions?
$1$. Haloarenes are very reactive towards nucleophilic substitution reaction.
$2$. In haloarenes,the $C-X$ bond acquires partial double bond character.
$3$. The $C-X$ bond in haloarenes is longer than the $C-X$ bond in haloalkanes.
$4$. In haloarenes,the phenyl cation formed as a result of self-ionisation is stable.