Discussion
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- Question
Sluge banks are formed if sewage is disposed of in
Options- A. rivers
- B. seas
- C. lakes
- D. none of these.
- Correct Answer
- seas
- 1. The density of population over 40 hectares is 250/hectare. If water supply demand per day is 200 litres and sewage discharge is 80% of water supply, the sewage flow in sewers of separate system, is
Options- A. 0.05552 cumec
- B. 0.05554 cumec
- C. 0.05556 cumec
- D. 0.0556 cumec
- E. 0.0558 cumec. Discuss
- 2. Depletion of ozone layer in the outer atmosphere may cause
Options- A. lung cancer
- B. skin cancer
- C. bronchitis
- D. heart disorder. Discuss
- 3. The pH value of fresh sewage is usually
Options- A. equal to 7
- B. more than 7
- C. less than 7
- D. equal to zero. Discuss
- 4. At the junction of sewers
Options- A. top of smaller sewer is kept lower
- B. top of larger sewer is kept lower
- C. tops of both the sewers are at the same level
- D. none of these. Discuss
- 5. For a grit chamber, if the recommended velocity of flow is 0.2 m/sec and detention period is 2 minutes, the length of the tank, is
Options- A. 16 m
- B. 20 m
- C. 24 m
- D. 30 m. Discuss
- 6. Lead acetate test in sewer manhole is done to test the presence of
Options- A. Methane gas
- B. Hydrogen sulphide
- C. Carbondioxide gas
- D. Diesel vapours. Discuss
- 7. Dried sewage after treatment is used as
Options- A. fertilizer
- B. building material
- C. chemical for lowering B.O.D.
- D. base material for paints. Discuss
- 8. The maximum diameter of sewers adopted in the designs is
Options- A. 1.0 m
- B. 2.0 m
- C. 3.0 m
- D. 4.0 m. Discuss
- 9. Lead caulked joints are used for laying
Options- A. stone ware pipes
- B. earthern ware pipes
- C. C.I. pipes
- D. G.I. pipes. Discuss
- 10. The design period of sewage treatment works in normally
Options- A. 5 - 10 years
- B. 15 - 20 years
- C. 30 - 40 years
- D. 40 - 50 years. Discuss
Waste Water Engineering problems
Search Results
Correct Answer: 0.05556 cumec
Correct Answer: skin cancer
Correct Answer: more than 7
Correct Answer: none of these.
Correct Answer: 24 m
Correct Answer: Hydrogen sulphide
Correct Answer: fertilizer
Correct Answer: 3.0 m
Correct Answer: earthern ware pipes
Correct Answer: 15 - 20 years
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