Hardness of water is due to all except:
Correct Answer: Phosphates
Description: Hardness of water Temporary hardness (carbonate hardness) is due to calcium & magnesium salts of bicarbonates. Permanent hardness (non - carbonate hardness) is due to calcium & magnesium salts of sulfates, chlorides, nitrates. Four main compounds causing hardness: calcium bicarbonates, magnesium bicarbonates, calcium sulfates, magnesium sulfates.
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