Civil Engineering MCQJE Level Civil Engineering
If raw water turbidity is mainly colloidal, plain sedimentation alone is ineffective because colloids have:
Environmental EngineeringEnvironmental EngineeringHARD
Choose the correct answer
A
Large diameter
B
Very high density
C
Very low settling velocity
D
No surface charge
Correct Answer
C. Very low settling velocity
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Colloids settle very slowly and need coagulation.
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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.