Civil Engineering MCQJE Level Civil Engineering
Slow sand filters remove bacteria mainly by:
Environmental EngineeringEnvironmental EngineeringEASY
Choose the correct answer
A
Biological layer called schmutzdecke
B
Chloride precipitation
C
Mechanical aeration only
D
High pressure washing
Correct Answer
A. Biological layer called schmutzdecke
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The biological layer on top of sand plays a major role in purification.
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This MCQ belongs to SSC JE Civil Paper-I Technical Mock Test Series. Full tests include timed attempts, rank comparison and subject-wise analysis.