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Alum is a chemical that is used in water treatment plants .It helps

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Answer:

Aluminium sulfate or alum is used as a flocculant to remove colour and turbidity from water supplies. The alum promotes coagulation of fine particles. Once coagulated, they sediment down.

Explanation:

Aluminium sulfate or alum is used as a flocculant to remove colour and turbidity from water supplies. The alum promotes coagulation of fine particles. Once coagulated, they sediment down.

Answer:

remove colour and turbidity from watr supplies. it promoted coagulation if fine particles.

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