The major product of the reaction is:

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.

$A$ major component of Borsch reagent is obtained by reacting hydrazine hydrate with which of the following?

As compared with chlorocyclohexane, which of the following statements correctly apply to chlorobenzene?
$A$. The magnitude of negative charge is more on chlorine atoms.
$B$. The $C-Cl$ bond has partial double bond character.
$C$. $C-Cl$ bond is less polar.
$D$. $C-Cl$ bond is longer due to repulsion between delocalised electrons of the aromatic ring and lone pairs of electrons of chlorine.
$E$. The $C-Cl$ bond is formed using $sp^2$ hybridised orbital of carbon.
Choose the correct answer from the options given below:

Nitrobenzene on nitration gives

Explain the mechanism of nucleophilic substitution reaction of ortho and para nitrohaloarenes.