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प्रश्न
State the causes of hardness in water.
टीपा लिहा
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उत्तर
The presence of salts of calcium and magnesium i.e. Ca(HCO3) or Mg(HCO3) or calcium or magnesium sulphate or chloride in water are the Causes Of Hardness Of Water.
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Removal of Hardness of Water
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