Water Supply & Sanitation Engineering Online Test – Paper 2

1. Sickness of tube well indicates

2. Which is in the correct order?

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

4. The sewage in an inverted siphon will flow under what condition?

5. Total quantity of reservoir is the sum of the following

6. If the head of water is more than 100 m then the type of pipe used is

7. The standard BOD at 20°C is taken for the consumption in:

8. In the single-stack system of plumbing, the number of vertical pipes is:

9. The ratio of maximum to average sewage flow for mains up to 1 m in diameter is usually:

10. The sewage consists of water:

11. The shape of the trunk and outfall type of sewer is usually:

12. The location of a well is considered good if it is sunk into

13. Steel pipes are

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

15. Which traps have parallel legs?

16. A circular section of sewer has the advantage of:

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

18. Choose the odd statement:

19. Groundwater is generally free from

20. Turbidity for domestic water is undesirable because it

21. Septic tanks are best suited for:

22. 2 ml of sewage, having BOD-500 mg/l, is diluted to 200 ml, and incubated for 5 days at 20°C. If the D.O. content after 5 days is found to be 5 mg/l, what was the initial D.O. content of the diluted sample?

23. Most suitable section, when the maximum and minimum flow ratio is not much, is:

24. A manhole is generally provided at each:

25. Where manholes shall be installed in a sewer system?

26. Pipes for water supply are tested for

27. The curve showing the level of water in a well and the original water table is known as

28. Rotary pumps are suited for

29. Mass action' during sedimentation is the property of:

30. Highly colored waters are