A. Acid fermentation
B. Acid regressio
C. Alkaline fermentation
D. None of these
The first stage of neutral process of sludge digestion, is__________________? Read More »
Civil Engineering Mcqs, Waste Water Engineering A. 2 metres/sec
B. 1 metre/sec
C. 0.5 metre/sec
D. 0.25 metre/sec
The self-cleansing velocity of water flowing through pipe lines, is___________________ ? Read More »
Civil Engineering Mcqs, Waste Water Engineering A. Nitrites are formed
B. Nitrates are formed
C. Carbondioxide is formed
D. Ammonia is formed
In very first stage of decomposition of the organic matter in sewage________________? Read More »
Civil Engineering Mcqs, Waste Water Engineering A. Branch sewers
B. Main sewers
C. Trunk sewers
D. All the above
Design period of 40 to 50 years is adopted for_________________? Read More »
Civil Engineering Mcqs, Waste Water Engineering A. Centrifugal pump
B. Reciprocating pump
C. Pneumatic ejector
D. None of these
A. 1
B. 2 to 3
C. 3 to 5
D. 5 to 10
The design period in years for pumping plants, is___________________? Read More »
Civil Engineering Mcqs, Waste Water Engineering A. Bend
B. Junction
C. Change of gradient
D. All the above
A manhole is generally provided at each__________________? Read More »
Civil Engineering Mcqs, Waste Water Engineering A. 100
B. 60
C. 40
D. 20
A. 1045 mm
B. 1065 mm
C. 1075 mm
D. 1095 mm
A. Flow velocity is kept 0.09 m/sec
B. Detention period is kept 3 to 4 minutes
C. Organic and inorganic materials are separated
D. All the above
In detritus tanks______________________? Read More »
Civil Engineering Mcqs, Waste Water Engineering