Steam distillation process cannot be used for purifying which of the following?

State whether the following statements regarding steam distillation at reduced pressure are True or False:
$i$. It is used in the soap industry.
$ii$. Water pumps,vacuum pumps,or air pumps are used.
$iii$. Liquids with high boiling points do not decompose.
$iv$. The liquid is decomposed.
$v$. The liquid is boiled at a low temperature.

Glycerol boils at $290\,^oC$ with slight decomposition. Impure glycerin can be purified by:

The purification method based on the following physical transformation is $:$
$\text{Solid} (X)$ $\xrightarrow{\text{Heat}} \text{Vapour} (X)$ $\xrightarrow{\text{Cool}} \text{Solid} (X)$

Glycerol is purified by

The method used for the separation of the mixture of products ($B$ and $C$) obtained in the following reaction is: