The azeotropic mixture of water $(b.p. \ 100 \ ^oC)$ and $HCl$ $(b.p. \ 85 \ ^oC)$ boils at $108.5 \ ^oC$. When this mixture is distilled,it is possible to obtain:

The mixture of ethanol and water cannot be separated by simple distillation because:

Which one of the following mixtures can be separated into pure components by fractional distillation?

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

Which of the following statements is true?

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.