11. Dry water flow in a combined sewer, is
12. A sewer running partially full and hurried with back filled, fails in compression due to
13. The ratio of design discharge to the surface area of a sedimentation tank is called
14. The maximum depth of sedimentation tanks, is kept
15. Chlorination of water is done for the removal of
16. Depletion of ozone layer in the outer atmosphere may cause
17. For treating the sewage of a large city, you will recommend
18. In sewers the effect of scouring is more on
19. For estimating the peak run off the rational formula Q = 0.0278 KpA was evolved by
20. 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
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