which of the following process permanent hardness of water can be remo

1.	which of the following process permanent hardness of water can be removed, by adding [AFMC 2005]
A.	Sodalime
B.	Sodiumbicarbonate
C.	Washing soda
D.	Sodium chloride
Answer» D. Sodium chloride

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which of the following process permanent hardness of water can be removed, by adding [AFMC 2005]

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