Civil Engineering - Waste Water Engineering Mock test - 2 - CIVIL ENGINEERING OBJECTIVE

Civil Engineering – Waste Water Engineering Mock test – 2



Welcome to your Waste Water Engineering Mock test -2
Take an exciting test in Waste Water Engineering 
You have only 20 mins to complete the test (31 Questions)
Wish you all the best!!!
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1. In sewage having fully oxidised organic matter, the nitrogen exists in the form of
2. The presence of free ammonia in sewage, is detected by
3. Dry water flow in a combined sewer, is
4. In sewers the highest non-scouring velocity is achieved in
5. The drop man holes are generally provided in sewers for
6. For design purposes, the normal rate of infiltration of ground water into the sewer, is
7. The small sewers are cleaned by
8. The clarigesters are
9. The digested sludge from septic tanks, is removed after a maximum period of
10. For providing an Indian type W.C., the R.C.C. slabs in the toilet portion
11. The liquid wastes from kitchens, bath rooms and wash basins, is not called
12. The effluent of a septic tank is
13. Pick up the correct statement from the following :
14. Maximum permissible velocity 1.5 m/sec, is adopted in drains
15. Fresh sewage may become stale in
16. During preliminary treatment of a sewage
17. In a city the ratio of the drainage to sewage is 20, the percentage discharge passing through non-monsoon periods, is
18. The standard B.O.D. of water is taken for
19. A manhole is classified as shallow if its depth is between
20. The amount of oxygen consumed by the aerobic bacterias which cause the aerobic biological decomposition of sewage, is known
21. he most dangerous pollutant in vehicular emissions is
22. The settling velocity of the particles larger than 0.06 mm in a settling tank of depth 2.4 is 0.33 m per sec. The detention period recommended for the tank, is
23. It is customary to design a sewer for D.W.F. on the basis of
24. To prevent settling down of sewage both at the bottom and on the sides of a large sewer, self-cleaning velocity recommended for Indian conditions, is
25. If the depletion of oxygen is found to be 2.5 mg/litre after incubating 2.5 ml of sewage diluted to 250 ml for 5 days at 20°C, B.O.D. of the sewage is
26. Rate of flow of sewage is generally assumed
27. The detention period for plain sedimentation water tanks, is usually
28. Pick up the correct statement from the following :
29. Nitrogen cycle of sewage, is
30. The effluent of a septic tank is
31. A drop manhole is provided if