Why alum is used to purify muddy water? - Vidyadip

MCQ

Why alum is used to purify muddy water?

A
Mud gets dissolved due to alum.
B
Mud floats due to alum.
✓
Mud settles down due to alum.
D
Alum kills germs from muddy water.

✓

Answer

Correct option: C.

Mud settles down due to alum.

The dissolved particles of alum load the fine mud particles due to which mud settles down and pure water can be decanted.

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