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Sir, How can we separate a mixture of two miscible liquids?
We can separate a mixture of two miscible liquids by fractional distillation .It can separated due to difference in boiling points .

Fractional distillation
A process by which components in a chemical mixture are separated according to the difference in their boiling points . Vapors from a boiling solution are passed along a column. The temperature of the column gradually decreases along its length. Components with a higher boiling points condense on the column and return to the solution ,components with a lower boiling points pass through the column and are collected.

  Example :Gasoline is produced from crude oil using fractional distillation.