If the total hardness of a water sample from complete analysis is found to be 120 mg/l and the non-carbonate hardness is 50 mg/I. The carbonate hardness (in mg/l) shall then be

If the total hardness of a water sample from complete analysis is foun

1.	If the total hardness of a water sample from complete analysis is found to be 120 mg/l and the non-carbonate hardness is 50 mg/I. The carbonate hardness (in mg/l) shall then be
A.	170
B.	70
C.	20
D.	2.4
E.	0.42
Answer» C. 20

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If the total hardness of a water sample from complete analysis is found to be 120 mg/l and the non-carbonate hardness is 50 mg/I. The carbonate hardness (in mg/l) shall then be

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