Department of Pre-University Education, KarnatakaPUC Karnataka Science Class 12
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Give Reasons for the Following Observations: Addition of Alum Purifies the Water - Chemistry

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Give reasons for the following observations: Addition of alum purifies the water

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Solution

In water purification, alum acts as a good coagulant. A coagulant binds extremely fine and small particles of impure water to large particles which are easily removable by filtration or settling. So, anyone can remove unwanted colour and turbidity from water.

Concept: Emulsions
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