Civil Engineering - Waste Water Engineering
Exercise :: Waste Water Engineering - Section 7
| 16. |
The quantity of liquid waste which flows in sewers during the period of rainfall, is known |
| A. |
sanitary sewage | | B. |
industrial waste | | C. |
storm sewage | | D. |
none of these. |
Answer: Option C
Explanation:
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| 17. |
The most efficient cross-section of sewers in a combined sewerage system is |
| A. |
parabolic | | B. |
circular | | C. |
rectangular | | D. |
new egged. |
Answer: Option B
Explanation:
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| 18. |
Pick up the incorrect size of stone ware sewers |
| A. |
52.5 cm | | B. |
67.5 cm | | C. |
82.5 cm | | D. |
90 cm | | E. |
none of these. |
Answer: Option E
Explanation:
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| 19. |
The grit and silt of the grit chambers, may not be used for |
| A. |
raising low lying areas by dumping | | B. |
concreting | | C. |
both (a) and (b) | | D. |
neither (a) nor (b). |
Answer: Option B
Explanation:
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| 20. |
In a sludge tank, the gas mainly produced, is |
| A. |
Oxygen | | B. |
Nitrogen | | C. |
Hydrogen | | D. |
Carbon dioxide | | E. |
Methane. |
Answer: Option E
Explanation:
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