Water Supply & Sanitation Engineering Online Test – Paper 2

1. By boiling water, hardness can be removed if it is due to:

2. During the water test of sewer, 2 lit/cm of dia/km of sewer line may be allowed for a period of:

3. Groundwater from artesian wells

4. A lamp hole is helpful in:

5. Strainer type tube wells are considered unsuitable for

6. The sewage consists of water:

7. The velocity of water in water mains of 40 cm diameter is usually kept

8. If P is the total internal pressure, d is the diameter of the pressure conduit, and t is the thickness of the conduit, the hoop's stress is

9. Traddle pump is operated by

10. Gastrointestinal irritation is produced because of excess of the following in water

11. The pattern of sanitation most suitable for a sloppy area is:

12. Slow sand filter is efficient to remove bacteria from the raw water to an extent of:

13. Laying of a sewer is generally done with the help of:

14. According to the guidelines of DWSS, the maximum number of users in each stand post should be:

15. The types of diseases caused due to the lack of water are known as

16. If the diameter of a sewer is 150 mm, the gradient required for generating a self-cleaning velocity is:

17. Which one is a waterborne virus infection?

18. Water horsepower of a pump is given by

19. Fluoridation is done to

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

21. Aqueducts are generally not designed in

22. The water supply system whose main, sub-main, and branches are interconnected with each other is:

23. The diameter of pipes in bathrooms and lavatories in domestic water supply is:

24. Groundwater is generally free from

25. The specific retention is least in the soil type

26. The presence of hydrogen sulfide in water causes:

27. Sluice valves in main water supplies are

28. Hydrants are used for tapping water from mains for:

29. The flow in the sewers is minimum during which hours?

30. Rotary pumps are suited for