By which of the following process can we separate two miscible liquids?

Distillation

The correct answer is option 2. Distillation.

It seems there is a repetition in the options provided. Ignoring the repetitions, the correct option for separating two miscible liquids is Distillation.

Distillation is a process commonly used to separate two or more miscible liquids based on their differences in boiling points. The mixture is heated to vaporize the component with the lower boiling point, and then the vapor is condensed back into a liquid, resulting in the separation of the components.