A. Acid fermentation
B. Acid regressio
C. Alkaline fermentation
D. None of these
A. 2 metres/sec
B. 1 metre/sec
C. 0.5 metre/sec
D. 0.25 metre/sec
A. Nitrites are formed
B. Nitrates are formed
C. Carbondioxide is formed
D. Ammonia is formed
A. Branch sewers
B. Main sewers
C. Trunk sewers
D. All the above
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
A. Bend
B. Junction
C. Change of gradient
D. All the above
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