Alum is a water purifier because it [KCET 2005]

1.	Alum is a water purifier because it [KCET 2005]
A.	Coagulates the impurities
B.	Softens hard water
C.	Gives taste
D.	Destroys the pathogenic bacteria
Answer» B. Softens hard water

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Alum is a water purifier because it [KCET 2005]

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