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Hardness of Water:Causes, Types and Treatments

1000g of a wa...

Question

1000g of a water sample contained a calcium salt equivalent to 1g of CaCO3. The hardness of that water sample is ? option 1)100ppm option 2) 500 ppm option 3)1000ppm option 4)20,000 ppm

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Solution

1Ã—10^6/1000=1000ppm

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