Civil Engineering MCQs

2965 MCQs  (Page 125 of 297)

Sewerage system is designed for_______________?
A. Maximum flow only
B. Minimum flow only
C. Average flow only
D. Maximum and minimum flow
Laying of sewers is usually done with the help of________________?
A. A theodolite
B. A compass
C. Sight rails and boning rods
D. A plane table
If the sewage contains grease and fatty oils, these are removed in_________________?
A. Grit chambers
B. Detritus tanks
C. Skimming tanks
D. Sedimentation tanks
Which of the following unit works in anaerobic conditions ?
A. Sludge digestion tank
B. Sedimentation tank
C. Activated sludge treatment
D. Trickling filters
The maximum efficiency of BOD removal is achieved in______________?
A. Oxidation pond
B. Oxidation ditch
C. Aerated lagoons
D. Trickling filters
In facultative stabilization pond, the sewage is treated by________________?
A. Aerobic bacteria only
B. Algae only
C. Dual action of aerobic bacteria and anaerobic bacteria
D. Sedimentation
Composting and lagooning are the methods of_______________?
A. Sludge digestion
B. Sludge disposal
C. Sedimentation
D. Filtration