In activity, a teacher dissolved a small amount of solid copper sulphate in a tumbler half filled with water. Which method would you use to get back solid copper sulphate from the solution?
(a) Decantation
(b) Evaporation
(c) Sedimentation
(d) Condensation
By the process of evaporation, we can get back solid copper sulfate from the solution.
The process of evaporation for separating a mixture is based on the fact that liquids vaporize easily whereas solids do not vaporize easily.
So, option (b) is the correct answer.