Question

Which of the following techniques is considered better than simple evaporation for separation of a solid from liquid?​ ​

• A. Simple distillation​
• B. Fractional distillation​
• C. Crystallisation
• D. Centrifugation​

Answer 1

The correct option is C Crystallisation

Crystallisation is considered better than simple evaporation because the solid obtained is very pure as it is obtained in the form of crystals which are formed when the solid particles come together from the solution and combine to form the crystals of the solid. The impurities are left behind in the solvent. ​ ​