A. Hydrogen sulphide
B. Carbon dioxide
C. Methane
D. Oxygen
A. Alum
B. Ferric chloride
C. Ferric sulphate
D. Chlorinated copperas
The coagulant which is generally not used for treating the sewage, is__________________? Read More »
Civil Engineering Mcqs, Waste Water Engineering A. Centrifugal pump
B. Pneumatic ejector
C. Reciprocating pump
D. None of these
A. 15 days
B. 30 days
C. 60 days
D. 90 days
A. Less than 150
B. Between 150 to 200
C. Between 200 to 300
D. More than 500
No treatment of the sewage is given if dilution factor is_____________? Read More »
Civil Engineering Mcqs, Waste Water Engineering A. The sewage when running full from inside, is called internal pressure
B. The internal pressure if any, causes tensile stress in the pipe material
C. Pressure sewers are designed to be safe in tension
D. All the above
The pressure exerted by_____________? Read More »
Civil Engineering Mcqs, Waste Water Engineering A. Minimum velocity of 0.45 m/sec, is maintained at its minimum flow
B. A maximum velocity of 0.90 m/sec, is maintained at its maximum flow
C. Both A. and B.
D. Neither A. nor B.
For efficient working of a sewer, it must be ensured that _____________? Read More »
Civil Engineering Mcqs, Waste Water Engineering A. Width of the tank is normally kept about 6 m
B. Length of the tank is normally kept 4 to 5 times the width
C. Maximum horizontal flow velocity is limited to 0.3 m/minute
D. All the above
For a continuous flow type of sedimentation tanks__________________? Read More »
Civil Engineering Mcqs, Waste Water Engineering A. Water test
B. Smoke test
C. Straightness test
D. All the above
A. 15 cm c/c
B. 22.5 cm c/c
C. 30 cm c/c
D. 50 cm c/c
Bottom openings 15 cm × 15 cm in the standing baffle wall are provided________________? Read More »
Civil Engineering Mcqs, Waste Water Engineering