Chemistry, asked by bidishahazra28042000, 6 months ago

some impurities not settle down,
to remove suspended impurities alum in is added.

Answers

Answered by Anonymous

4

Answer:

When alum is added to raw water it reacts with the bicarbonates alkalinities present in water and forms a gelatinous precipitate.

It neutralizes all the suspended impurities of water resulting in their coagulation.

Explanation:

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