Question

you have tried a number of methods to separate impurities like mud from water. sometimes,the water obtained after employing all these process could still be a little muddy.let us see if we can remove even this impurity completely.take this filtered water in a glass. tie a thread to a small piece of alum.suspend the piece of alum in the water and swirl.did the water become clear?what happened to the mud?​

Answer 1

Answer:

the mud pieces will settle down to the bottom of the glass.