2024 Some Basic Concepts of ChemistryTechniques of Purification of Solids Easy Question 8 of 49 in Some Basic Concepts of Chemistry

On heating some solid substance change from solid to vapour state without passing through liquid state. The technique used for the purification of such solid substances based on the above principle is known as:

A Distillation
B Chromatography
C Crystallization
D Sublimation

The answer is D.

Solution

When a solid directly changes into vapour on heating without passing through the liquid state, the process is called sublimation. The purification technique for such solids based on this principle is sublimation.

Concept Purification technique based on solid-to-vapour transition

Some Basic Concepts of Chemistry in past papers

49 questions from this chapter have appeared across 23 exam years.