Per NCERT, what is SUBLIMATION as a separation technique?
AMixing two solids together
BCooling a hot liquid
CA process where a solid CHANGES DIRECTLY into vapour on heating (without becoming liquid) — used to separate substances like camphor or ammonium chloride from other solids
DFiltering a suspension
Answer & Solution
Correct answer: C. A process where a solid CHANGES DIRECTLY into vapour on heating (without becoming liquid) — used to separate substances like camphor or ammonium chloride from other solids
Per NCERT §5.4.2, sublimation = solid → gas directly without liquid phase. The other options misstate.
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