- (A) to decrease it
- (B) to increase it
- (C) fluctuating
- (D) nil
Civil Engineering Mcqs
- (A) grade of sewer
- (B) length of sewer
- (C) hydraulic mean depth of sewer
- (D) roughness of sewer
- (A) X/4
- (B) X/2
- (C) X
- (D) 2X
- (A) 0 to 50
- (B) 50 to 150
- (C) 150 to 350
- (D) 350 to 500
- (A) 4.5 to 6.0
- (B) 6.5 to 8.0
- (C) 8.5 to 10.0
- (D) 10.5 to 12.0
- (A) sludge digestion
- (B) sludge disposal
- (C) sedimentation
- (D) filtration
- (A) aerobic bacteria only
- (B) algae only
- (C) dual action of aerobic bacteria and anaerobic bacteria
- (D) sedimentation
- (A) oxidation pond
- (B) oxidation ditch
- (C) aerated lagoons
- (D) trickling filters
- (A) sludge digestion tank
- (B) sedimentation tank
- (C) activated sludge treatment
- (D) trickling filters
- (A) grit chambers
- (B) detritus tanks
- (C) skimming tanks
- (D) sedimentation tanks
