Which technique would be least effective for purifying a mixture of two solids, one of which sublimes at 50°C and the ot
Sublimation would separate the sublimable solid effectively. Crystallization, requiring a solvent, is less suitable as it’s designed for soluble impurities, not thermal properties.
Ref: NCERT Class 11 Chemistry > Chapter 8: Organic Chemistry - Some Basic Principles and Techniques > Topic: Purification Methods - Crystallization Distillation Chromatography