Civil Engineering MCQAE Level Civil Engineering
Some of the non-toxic metals normally found in natural water are
Environmental EngineeringEnvironmental EngineeringMEDIUM
Choose the correct answer
A
Arsenic, Lead, Mercury
B
Calcium, Sodium, Silver
C
Cadmium, Chromium, Copper
D
Iron, Manganese, Magnesium
Correct Answer
D. Iron, Manganese, Magnesium
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Iron, manganese and magnesium are essentially non-toxic (affect taste/hardness); the others contain toxic heavy metals.
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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.