Question

Muddy water can be purified through coagulation by using :

• A. $\text{common slat}$
• B. $\text{alums}$
• C. $\text{sand}$
• D. $\text{lime}$

Answer 1

The correct option is B $\text{alums}$

Muddy water can be purified through coagulation by using alums.

It is added to the water so that the negatively charged colloidal particles clump together into Flocks which then float to the top of the liquid settle to the bottom of the liquid, or can be more easily filtered from the liquid, prior to further filtration and disinfection of the water.