Question

how to separate chalk from water

Answer 1

In this example the chalk that remains on the filter paper is called the residue. The water (the substance) that passes through the filter paper is called the filtrate. If your mixture is a solution, such as salty water, then filtering will not separate the salt from the water.

Answer 2

By Filtration method using filter paper the chalk is separated from water. When we pass chalk water from filter paper, the chalk remain left on filter paper as residue during filtration and the clean water passes out.