One degree of hardness of water means a content of salts of (A) 10.25 mg/litre (B) 12.25 mg/litre (C) 14.25 mg/litre (D) 16.25 mg/litre

One degree of hardness of water means a content of salts of 

(A) 10.25 mg/litre 

(B) 12.25 mg/litre 

(C) 14.25 mg/litre 

(D) 16.25 mg/litre

by

1 Answer

Answer :

(C) 14.25 mg/litre 

by

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