A. 2.5 to 3.0 m/sec
B. 3.0 to 4.0 m/sec
C. 3.5 to 4.5 m/sec
D. 4.5 to 5.5 m/sec
A. Large suspended organic solids
B. Oil and grease
C. Sand and girt
D. Floating materials
Primary treatment of sewage consists of removal of__________________? Read More »
Civil Engineering Mcqs, Waste Water Engineering A. 1 in 5
B. 1 in 10
C. 1 in 15
D. 1 in 20
A. Thyroid
B. Kidneys
C. Eyes
D. Ovaries/testis
Which one of the following part of human body withstands minimum radiation ? Read More »
Civil Engineering Mcqs, Waste Water Engineering A. cm/minute
B. cm/hour
C. cm/day
D. None of these
The intensity of rain is expressed in________________? Read More »
Civil Engineering Mcqs, Waste Water Engineering A. 25 to 50 m
B. 50 m to 100 m
C. 100 m to 150 m
D. 150 m to 300 m
Inter-distance between ventilation columns in a sewer line is kept__________________? Read More »
Civil Engineering Mcqs, Waste Water Engineering A. Vs = 418 (Gs – Gw) d [(3T + 70)/100]
B. Vs = 418 (Gs – Gw)d² [(3T + 70)/100]
C. Vs = 218 (Gs – Gw)d² [(3T + 70)/100]
D. Vs = 218 (Gs – Gw)d [(3T + 70)/100]
A. Aeration is continued till stability
B. Aeration is done with an admixture of previously aerated sludge
C. Sludge is activated by constant stirring
D. Water is removed by centrifugal action
In the activated sludge process__________________? Read More »
Civil Engineering Mcqs, Waste Water Engineering A. d/D = ½ (1 – –
B. a/A
C. r/R = [1 –
D. All the above
A. 1.39 m
B. 1.49 m
C. 1.59 m
D. 1.69 m
