$A$ mixture of two completely miscible non-ideal liquids which distils without change in its composition at a constant temperature as though it were a pure liquid. This mixture is known as:

Components of a binary mixture of two liquids $A$ and $B$ were being separated by distillation. After some time,the separation of components stopped and the composition of the vapour phase became the same as that of the liquid phase. Both the components started coming in the distillate. Explain why this happened.

Why is it not possible to obtain pure ethanol by fractional distillation? What general name is given to binary mixtures which show deviation from Raoult’s law and whose components cannot be separated by fractional distillation? How many types of such mixtures are there?

Absolute alcohol cannot be prepared by fractional distillation of rectified spirit since:

The boiling point of an azeotropic mixture of water and ethanol is less than that of both pure water and pure ethanol. The mixture shows:

Which one of the following is the correct statement? If an azeotropic solution of two liquids has a boiling point higher than both of them,then it: