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Alum is a water purifier because it...

Alum is a water purifier because it

A

coagulates the impurities

B

softens hard water

C

gives taste

D

destroys the pathogenic bacteria

Text Solution

Verified by Experts

The correct Answer is:
a
Alum contains many cations and water has many anionic impurities. On adding alum coagulates the suspended impurities and make water fit for drinking purposes
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KCET PREVIOUS YEAR PAPERS-KARNATAKA CET 2005-CHEMISTRY
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