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In which mixture is sublimation useful?

Answer and explanation

Correct answer: Camphor and sand

On heating, camphor changes directly from solid to vapour without passing through the liquid state, and it deposits again as solid camphor on a cool surface. Sand does not sublime, so a mixture of camphor and sand can be separated by sublimation. Salt and water are separated by evaporation, oil and water by a separating funnel, and sublimation is not suitable for milk and water. Exam tip: choose sublimation when one solid component sublimes and the other does not.

Related tags

ChemistryMixturesSeparation TechniquesSublimationCamphorClass 11Nature Of MatterSome Basic Concepts Of Chemistry

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