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For purifying drinking water alum is used

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For purifying drinking water alum is used

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Correct Answer: Option A
For purifying drinking water alum is used for coagulation of mud particles. Aluminium Sulfate, Shortly known as Alum, when added to raw water reacts with the bicarbonate alkalinities present in water and forms a gelatinous precipitate. The water over this sediment is almost clean other than some fine particles dissolved in it.
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Suman Majumder
Suman Majumder 10 years ago
nice
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