The distillation technique most suited for separating glycerol from spent-lye in the soap industry is:

State whether the following statements are True or False:
$(i)$ The boiling points of chloroform and aniline are $334 \ K$ and $457 \ K$ respectively.
$(ii)$ The vapour of chloroform is obtained after aniline in simple distillation.
$(iii)$ Chloroform is more volatile than aniline.

In chromatography,what does $R_f$ stand for?

Glycerol is purified by

At what temperature and pressure does a liquid vaporize in steam distillation?

The correct match between items of List-$I$ and List-$II$ is:

List-$I$	List-$II$
$A$. Coloured impurity	$P$. Steam distillation
$B$. Mixture of $o$-nitrophenol and $p$-nitrophenol	$Q$. Fractional distillation
$C$. Crude oil	$R$. Charcoal treatment
$D$. Mixture of glycerol and sugars	$S$. Distillation under reduced pressure