Chemistry · Water Hardness
Permanent hardness of water is caused by the presence of which dissolved salts?
- 1Oxides of Calcium and Magnesium
- 2Chlorides, Sulfates, and Nitrates of Calcium and Magnesium✓
- 3Bicarbonates of Calcium and Magnesium
- 4Carbonates of Calcium and Magnesium
Correct answer
Chlorides, Sulfates, and Nitrates of Calcium and Magnesium
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