- (A) Carbon dioxide
- (B) Hydrogen
- (C) Ammonia
- (D) All the above
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- (A) House sewers
- (B) Lateral sewers
- (C) Branch sewers
- (D) Main sewers
- (A) Anaerobic bacteria
- (B) Aerobic bacteria
- (C) Both types of bacterias
- (D) None of these
- (A) From low lying areas
- (B) From flat areas
- (C) From basements
- (D) All the above
- (A) Water test
- (B) Ball test
- (C) Mirror test
- (D) All of these
- (A) Centrifugal pump
- (B) Reciprocating pump
- (C) Pneumatic ejector
- (D) None of these
- (A) 20% of the design discharge
- (B) Slightly less than 5% of the design discharge
- (C) Slightly more than 5% of the design discharge
- (D) None of these
- (A) Size
- (B) Shape
- (C) Weight
- (D) None of these
- (A) Should be sunk by 20 cm
- (B) Should be kept 20 cm above the adjacent portion
- (C) Should be sunk by 50 cm
- (D) Need not be sunk
- (A) 0.68 m
- (B) 0.88 m
- (C) 1.36 m
- (D) 1.76 m
