Question

Crystallization is considered better than evaporation for obtaining pure crystal of sugar because on heating :

• A. sugar sublimes
• B. sugar particles will evaporate
• C. sugar particles will decompose
• D. sugar particles will melt

Answer 1

The correct option is C sugar particles will decompose

Crystallisation is a process that separates a pure solid in the form of its crystals from a solution.

Crystallisation is better than evaporation because during Evaporation

• Some solids decompose or some, like sugar may get charred on heating to dryness.

• Some impurities may remain dissolved in the solution even after filtration which on evaporation contaminates the solid.