Which method is used to separate a mixture of organic liquids with boiling points differing by more than 30°C?
Simple distillation is suitable for separating liquids with boiling point differences greater than 25–30°C.
Ref: NCERT Class 11 Chemistry > Chapter 8: Organic Chemistry - Some Basic Principles and Techniques > Topic: Purification Methods - Crystallization Distillation Chromatography