What is distillation? List two conditions essential for using this as a method of separation of components of a mixture.

(N/A) Distillation: This is a process of separating components of a mixture by heating a liquid to form vapours and then cooling the vapours to get back the liquid.
$(b)$ Two essential conditions for distillation are:
$(i)$ The components of the mixture must be miscible liquids.
$(ii)$ There should be a significant difference in the boiling points of the components (usually greater than $25 \ K$ for simple distillation,though the question implies general conditions for separation).