The maximum desirable limit (BIS) of total hardness (as CaCo3) in drin

1.	The maximum desirable limit (BIS) of total hardness (as CaCo3) in drinking water is
A.	600 ppm
B.	300 ppm
C.	500 ppm
D.	1000 ppm
Answer» C. 500 ppm

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The maximum desirable limit (BIS) of total hardness (as CaCo3) in drinking water is

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