Category: Waste Water Engineering

A. The water supply pipes carry pure water free from solid particles
B. The water supply pipes get clogged if flow velocity is less than self cleansing velocity
C. The sewers may be carried up and down the hills and valleys
D. The sewer pipes are generally laid along level hills

A. 2.30 m
B. 2.40 m
C. 2.45 m
D. 2.50 m

A. Lower end of ventilating column
B. Upper end of ventilating column
C. Upper end of the manhole
D. First step in manhole

A. 100
B. 60
C. 40
D. 20

A. Acid fermentation
B. Acid regressio
C. Alkaline fermentation
D. None of these

A. Comminutor
B. Shredder
C. Both A. and B.
D. Neither A. nor B.

A. Distances 150 m to 300 m
B. Upper ends of branch sewers
C. Every change in the size of sewers
D. All the above

A. 1 minute
B. 2 minutes
C. 3 minutes
D. 5 minutes

A. 100 to 500
B. 500 to 1000
C. 1000 to 1500
D. 1500 to 2000

A. pt = 3H3p/2 Z5
B. pt = 2H3p/3 Z5
C. pt = 3H3p/2Z5
D. pt = 2 3p/3Z5