Which purification technique is used to separate a mixture of two miscible liquids with close boiling points?
Fractional distillation separates miscible liquids with boiling points differing by less than 25°C using a fractionating column.
Ref: NCERT Class 11 Chemistry > Chapter 8: Organic Chemistry - Some Basic Principles and Techniques > Topic: Purification Methods - Crystallization Distillation Chromatography