Civil Engineering MCQAE Level Civil Engineering
Ca++ = 40 mg/L and Mg++ = 12 mg/L. What is the total hardness?
Environmental EngineeringEnvironmental EngineeringMEDIUM
Choose the correct answer
A
150 mg/L as CaCO3
B
52 mg/L
C
2.5 meq/L
D
100 mg/L as CaCO3
Correct Answer
A. 150 mg/L as CaCO3
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Hardness as CaCO3 = 40 x 50/20 + 12 x 50/12.15 ≈ 150 mg/L
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This MCQ belongs to WBPSC AE Previous Years Questions Series. Full tests include timed attempts, rank comparison and subject-wise analysis.