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An Intiative by Sri Chaitanya
a
Bicarbonates of calcium and magnesium are responsible for temporary hardness of water
b
Clarke's process is useful to remove permanent hardness of water
c
Deionized water is obtained when water is passed through both cation exchange resin and anion exchange resin.
d
Washing soda can remove both temporary and permanent hardness of water
answer is B.
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