Describe the use of a separatory funnel in the extraction of an organic compound.

The boiling point of aniline is $457 \ K$. At which temperature does aniline boil in simple distillation and in steam distillation?

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

Gasoline is obtained from crude petroleum oil by its

State whether the following statements regarding fractional distillation are True or False:
$(i)$ The freezing of vapour of a liquid with a high boiling point takes place first.
$(ii)$ In the column,the more volatile liquid is present in a higher concentration in the vapour phase at higher levels.
$(iii)$ The condensed liquid flows down and provides heat to the vaporizing liquid.
$(iv)$ The liquid with the highest boiling point reaches the top of the column.

Chromatographic technique/s based on the principle of differential adsorption is/are:
$A$. Column chromatography
$B$. Thin layer chromatography
$C$. Paper chromatography
Choose the most appropriate answer from the options given below: