The spacing of man holes along a straight portion of a sewer is 300 m, the diameter of the sewer may be__________________?
A. 0.9 cm
B. 1.2 m
C. 1.5 m
D. > 1.5 m
Civil Engineering Mcqs
Lead caulked joints are used for laying____________________?
Lead caulked joints are used for laying____________________?
A. Stone ware pipes
B. Earthenware pipes
C. C.I. pipes
D. G.I. pipes
If the depletion of oxygen is found to be 5 ppm after incubating a 2.5% solution of sewage sample for 5 days at 21°C, B.O.D. of the sewage is_____________________?
If the depletion of oxygen is found to be 5 ppm after incubating a 2.5% solution of sewage sample for 5 days at 21°C, B.O.D. of the sewage is_____________________?
A. 50 ppm
B. 100 ppm
C. 150 ppm
D. 200 ppm
The pH value of fresh sewage is usually ______________________?
The pH value of fresh sewage is usually ______________________?
A. Equal to 7
B. More than 7
C. Less than 7
D. Equal to zero
The spacing of bars for perforations in coarse screens used for the treatment of sewage, is ____________________?
The spacing of bars for perforations in coarse screens used for the treatment of sewage, is ____________________?
A. 20 mm
B. 30 mm
C. 40 mm
D. 50 mm
The density of population over 40 hectares is 250/hectare. If water supply demand per day is 200 litres and sewage discharge is 80% of water supply, the sewage flow in sewers of separate system, is_____________________?
The density of population over 40 hectares is 250/hectare. If water supply demand per day is 200 litres and sewage discharge is 80% of water supply, the sewage flow in sewers of separate system, is_____________________?
A. 0.05552 cumec
B. 0.05554 cumec
C. 0.05556 cumec
D. 0.0556 cumec
The temperature affects the________________?
The temperature affects the________________?
A. Biological activity of bacteria in sewage
B. Solubility of gases in sewage
C. Viscosity of sewage
D. All the above
Sludge banks are formed if sewage is disposed of in____________________ ?
Sludge banks are formed if sewage is disposed of in____________________ ?
A. Rivers
B. Seas
C. Lakes
D. None of these
Chlorination of water is done for the removal of____________________?
Chlorination of water is done for the removal of____________________?
A. Bacterias
B. Suspended solids
C. Sediments
D. Hardness
The arrangement made for passing the sewer line below an obstruction below the hydraulic gradient lines called ____________________?
The arrangement made for passing the sewer line below an obstruction below the hydraulic gradient lines called ____________________?
A. Inverted syphon
B. Depressed sewer
C. Sag pipe
D. all of these