1000g of a water sample contained a calcium salt equivalent to 1g of CaCO_3. The hardness of that water sample is

1000g of a water sample contained a calcium salt equivalent to 1g of C

1.	1000g of a water sample contained a calcium salt equivalent to 1g of CaCO_3. The hardness of that water sample is
Answer» 100 ppm 500 ppm 1000 ppm 20,000 ppm Answer :C