Suggest a method for the separation of a mixture of $o$-nitroaniline and $p$-nitroaniline.

The best and latest technique for isolation,purification and separation of organic compounds is:

Match the type of mixture of compounds in Column-$I$ with the technique of separation/purification given in Column-$II$.

Column-$I$	Column-$II$
$A$. Two solids which have different solubilities in a solvent and which do not undergo reaction when dissolved in it	$1$. Crystallisation
$B$. Liquid that decomposes at its boiling point	$2$. Distillation under reduced pressure
$C$. Steam volatile liquid	$3$. Steam distillation
$D$. Two liquids which have boiling points close to each other	$4$. Fractional distillation
$E$. Two liquids with large difference in boiling points	$5$. Simple distillation

In chromatography technique,the purification of a compound is independent of:

Identify the correct statements from the following:
$(i)$ Electromeric effect is a permanent effect.
$(ii)$ Hyperconjugation is a temporary effect.
$(iii)$ Fractional distillation is used to separate two liquids from a mixture if the difference in their boiling points is less.
$(iv)$ Different compounds are adsorbed on an adsorbent to different extents.

Explain why an organic liquid vaporises at a temperature below its boiling point during steam distillation.