MCQ
Why alum is used to purify muddy water?
- AMud gets dissolved due to alum.
- BMud floats due to alum.
- ✓Mud settles down due to alum.
- DAlum 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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