The mixture that forms a maximum boiling azeotrope is

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:

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?

Among the following,which liquid solution may form an azeotrope at a certain composition?

An azeotropic solution boils at a temperature lower than the boiling point of any of its components. This solution shows:

The azeotropic mixture of $HCl$ and water contains ...... $\%$ $HCl$.