Question

How to separate mixture of naphthalene balls and ammonium chloride with help of activity

Answer 1

Heat the mixture of naphthalene ball and Ammonium chloride in a China dish, due to the rising of temperature naphthalene ball undergoes a process sublimation and it will disappear but the Ammonium chloride stay in the China dish.

Answer 2

heat the mixture , put funnel on the China dish .
Make ensure that the vapours can not go outside the funnel .
After that stay the funnel for cooling when it cool down you get the ammonium chloride on the funnel and naphthalene in the China dish