Suggest a method for the purification of camphor contaminated with salt.

Which purification technique is used for high boiling organic liquid compounds that decompose near their boiling point?

Match List-$I$ with List-$II$:

List-$I$ $(\text{Mixture})$	List-$II$ $(\text{Method of Separation})$
$A. CHCl_3 + C_6H_5NH_2$	$I. \text{Distillation under reduced pressure}$
$B. \text{Crude oil in petroleum industry}$	$II. \text{Steam distillation}$
$C. \text{Glycerol from spent-lye}$	$III. \text{Fractional distillation}$
$D. \text{Aniline-water}$	$IV. \text{Simple distillation}$

Choose the correct answer from the options given below:

Fill in the Blanks :
$(1)$ The steam distillation of $.......$ liquid is done and it is boiled at $.........$ temperature.
$(2)$ $.........$ and $........$ used to reduce pressure in distillation under reduced pressure.
$(3)$ In steam distillation the equation of total vapour pressure is $P = p_1 + p_2$ where $p_1$ is more than $...........$
$(4)$ $.........$ apparatus is used in differential extraction.

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

Which of the following statements is incorrect for paper chromatography?