Which method is used to purify solids?
Answer & explanation
Correct answer: option 3
The correct answer is option 3. Crystallization
The crystallization method is used to purify solids.
Crystallization is a process that separates a pure solid in the form of its crystals from a solution.
For example, the salt we get from seawater can have many impurities in it. To remove these impurities, the process of crystallization is used.