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The degree of hardness of water is usual...

The degree of hardness of water is usually expressed in terms of

A

ppm by weight of `MgSO_(4)`

B

g/L of `CaCO_(3)`, and `MgCO_(3)`, present

C

ppm by weight of `CaCO_(3)`, irrespective of whether it is actually present

D

ppm of `CaCO_(3)` , actually present is water

Text Solution

Verified by Experts

The correct Answer is:
C
Degree of hardness is the number of parts of `CaCO_(3)` , equivalent to various calcium and magnesium salts present in a million parts of water by mass (ppm).
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