If dichloromethane $(DCM)$ and water $(H_2O)$ are used for differential extraction,which one of the following statements is correct?

Which of the following can be purified by sublimation?

The technique used for purification of steam volatile water immiscible substances is:

Glycerol boils at $290\,^{\circ}C$ with slight decomposition. Impure glycerine can be purified by

Which of the following statements are correct?
$A$. Glycerol is purified by vacuum distillation because it decomposes at its normal boiling point.
$B$. Aniline is purified by steam distillation as it is immiscible in water.
$C$. Ethanol can be separated from an ethanol-water mixture by azeotropic distillation because it forms an azeotrope.
$D$. An organic compound is pure if the mixed $M.P.$ remains the same.
Choose the most appropriate answer from the options given below:

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.