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The Total hardness of soft water as CaCO3 equivalent is __________

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The Total hardness of soft water as CaCO3 equivalent is __________

(a) 50ppm

(b) 100ppm

(c) 150ppm

(d) 200ppm

The question was asked in class test.

Question is from Types of Hardness and Method of their Removal in section Water Softening of Environmental Engineering

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Best answer
Correct answer is (a) 50ppm

Explanation: The Total hardness of soft water as CaCO3 equivalent is 50ppm while of hard water, it is 150-300ppm.

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