Question

A girl is go given a naphthalene ball to powder and common salt. Help her by explaining how to separate may more mixture

Answer 1

We can separate this mixture by the help of sublimation method.

Firstly, take funnel, cotton wool ball, common salt, powder, China dish, burner and tripod stand.
Take burner and put it on the tripod stand. Now, take the mixture and put it into the China dish. put a funnel on the mixture. Then put a cotton ball at the top of the funnel. Now start burning from the burner. You will observe that some layer of naphthalene ball stick in the funnel.