Civil Engineering MCQs

2965 MCQs  (Page 124 of 297)

The velocity of flow does not depend on_______________?
A. Grade of sewer
B. Length of sewer
C. Hydraulic mean depth of sewer
D. Roughness of sewer
The type of sewer which is suitable for both combined and separate system is_____________?
A. Circular sewer
B. Egg shaped sewer
C. Horse-shoe type sewer
D. Semi-elliptical sewer
The pathogens can be killed by_______________?
A. Nitrification
B. Chlorination
C. Oxidation
D. None of the above
Standard BOD is measured at________________?
A. 20°c – 1day
B. 25°c- 3day
C. 20°c – 5day
D. 30°c- 5day
The rate of BOD exerted at any time is_____________?
A. Directly proportional to bod satisfied
B. Directly proportional to bod remain-ing
C. Inversely proportional to bod satisfied
D. Inversely proportional to bod re-maining
Facultative bacteria are able to work in________________?
A. Presence of oxygen only
B. Absence of oxygen only
C. Presence as well as in absence of oxygen
D. Presence of water