Water Supply & Sanitation Engineering Online Test – Paper 2

1. Thrash rack/roughing filter is provided at the entrance of

2. The water supply demand in a fully plumbed system in Nepal context

3. A manhole of such depth that an access shaft is required in addition to the working chamber, is called.....:

4. Inverted siphon is called:

5. Water demand for public use as compared to the total demand, kept in the design of waterworks for a city, is

6. Excess concentration of sodium salts in water causes

7. Suitable sewer section for both combined and separate systems is:

8. Which one is a waterborne virus infection?

9. The color of septic sewage is:

10. Turbidity is measured by the

11. The main pipes must be designed to carry

12. Growth of the population can be conveniently represented by

13. The fire demand of a city is generally calculated by

14. Digesters are used for:

15. Decrease in per capita consumption occurs by

16. In the above problem 151, using Manning's formula with n = 0.014 then the hydraulic gradient will be

17. Methemoglobinemia (Blue babies) is due to

18. The amount of BOD in domestic water should be

19. Minimum depth of infiltration gallery is

20. The ratio of maximum hourly consumption and average hourly consumption of the maximum day is

21. The depression of the water table in a well due to pumping will be maximum

22. Absolutely soft waters are required for

23. The aquifer having the least water-bearing capacity is

24. Most suitable section of sewer in a separate sewage system is:

25. In the two-pipe system of plumbing, the number of vertical pipes is:

26. The SODIS method of water purification is a process of:

27. The working conditions in imhoff tanks are:

28. The rate of flow in an artesian spring is continuous and

29. A heavy metal having non-toxic property

30. Selection of material for the pipe depends on