Waste water Engineering Mock test - 4 || Civil Engineering Mock tests - CIVIL ENGINEERING OBJECTIVE

Waste water Engineering Mock test – 4 || Civil Engineering Mock tests




Welcome to your Waste water Engineering Mock test - 4
Take an exciting test in Waste water Engineering
You have only 20 mins to complete the test (25 Questions)
Wish you all the best!!!
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1. The sewer which transports the sewage to the point of treatment, is called
2. The sewerage system originates from
3. The small sewers are cleaned by
4. The standard B.O.D. of water is taken for
5. Sewer pipes need be checked for
6. In olden days the type of section adopted in trunk and out fall sewers was
7. If a paper moistened with lead acetate for five minutes when placed in manhole turns black. The sewer certainly contains
8. Rate of flow of sewage is generally assumed
9. To test chemical oxygen demand (C.O.D.) of sewage, organic matter is oxidised by potassium dichromate in the presence of
10. In sewage, the solids in mg per litre is
11. Aerobic activity is maximum
12. In primary sedimentation, the 0.2 mm inorganic solids get separated if specific gravity is
13. In septic tanks, decomposition of organic bacteria, is done by
14. The sewage discharge in a detritus tank of a treatment plant is 576 litres/sec with flow velocity of  0.2 m/sec. If the ratio of width to depth is 2, the depth is
15. Fresh sewage may become stale in
16. If the diameter of a sewer is 100 mm, the gradient required for generating self cleansing velocity is
17. In R.C. sewer pipes, the percentage longitudinal reinforcement to the cross-sectional area of  concrete is kept
18. Drop manholes at the junctions of sewer lines, are provided if
19. In 1000 kg of sewage, the total solids approximate
20. The coagulant widely used for sewage treatment, is
21. The ratio of minimum hourly flow to the average flow of sewage is
22. hydraulically equivalent, the relationship which holds good, is
23. House connections to the laterals is generally made by
24. Removal of oil and grease from sewage, is known
25. For the survival of fish in a river stream, the minimum dissolved oxygen is prescribed