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Civil Engineering - UPSC Civil Service Exam Questions - Discussion

Discussion Forum : UPSC Civil Service Exam Questions - Section 24 (Q.No. 43)
UPSC Civil Service Exam Questions
43.
Which one of the following statements is true to trickling filter sludge ?
It has a comparatively low sludge volume index
It is more difficult to dewater than activated sludge
It has a comparatively low concentration of sludge solids
It is bulky
Answer: Option
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