Level of Hardness if the value is 50-150 mg/L -: (A) Soft water, (B) Moderately hard water, (C) Hard water, (D) Very hard water
Answer is B. Ans. is 'b' i.e., Moderately hard water Classification of hardness in water Classification Level of hardness (mEq./litre) a) Soft water b) Moderately hard c) Hard water d) Very hard water Less than 1 (< 50 mg/L) 1 - 3 (50 - 150 mg/L) 3 -6(150 - 300 mg/L) Over 6 (> 300 mg/L)