Which of the following will cause softening of hard water

1.	Which of the following will cause softening of hard water
A.	Passing it through cation exchange resin
B.	Passing it through anion exchange resin
C.	Passing it through sand
D.	Passing it through alumina
Answer» B. Passing it through anion exchange resin

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Which of the following will cause softening of hard water

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