If the total hardness and alkalinity of a sample of water are 300 mg/L and 100 mg/L (CaCO3 scale) respectively, then its carbonate and non – carbonate hardness (in units of mg/L) will be respectively.

If the total hardness and alkalinity of a sample of water are 300 mg/L

1.	If the total hardness and alkalinity of a sample of water are 300 mg/L and 100 mg/L (CaCO3 scale) respectively, then its carbonate and non – carbonate hardness (in units of mg/L) will be respectively.
A.	100 and 200
B.	400 and 300
C.	100 and 400
D.	400 and zero
Answer» B. 400 and 300

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If the total hardness and alkalinity of a sample of water are 300 mg/L and 100 mg/L (CaCO3 scale) respectively, then its carbonate and non – carbonate hardness (in units of mg/L) will be respectively.

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