What is the purification method based on the principle that the compound and the impurities have different solubilities in a given solvent?

In $TLC$ for compound $X$,$R_f = 0.7$ and for $B$,$R_f = 0.4$. Which substance migrates more?

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

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.

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

Which of the following compounds can be separated by the steam distillation method?