Water Supply & Sanitation Engineering Online Test

Created by

Vikash chaudhary

This is a FREE online test. Beware of scammers who ask for money to attend this test.

Get fresh, new questions in each attempt.

Total Questions: 30
Time Allotted: 30 minutes
Passing Score: 50%
Randomization: Yes
Certificate: No
Do not refresh the page!
👍 All the best!

1 / 30

1. A circular section for a sewer is preferred only up to a diameter of:

a) 10 cm

b) 20 cm

c) 30 cm

d) 60 cm

2 / 30

2. Fluoridation is done to

a) protect children's teeth

b) protect from dental fluorosis

c) protect from both dental and skeletal fluorosis

d) add taste to water

3 / 30

3. The suitable system of sanitation for an area having rainfall for only one season is:

a) separate system

b) combined system

c) partially combined system

d) all of the above

4 / 30

4. Asbestos pipes are joined by means of

a) flanged joint

b) flexible joint

c) simplex joint

d) dresser coupling joint

5 / 30

5. Sewer preferred for a combined system of sewage is:

a) rectangular sewer

b) circular sewer

c) egg-shaped sewer

d) all of the above

6 / 30

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

a) below 0.5 m/sec

b) below 5 m/sec

c) below 1.8 m/sec

d) below 18 m/sec

7 / 30

7. At the socket and spigot joint,

a) the enlarged end of the pipe is called a socket

b) the normal end of the pipe is called a spigot

c) the spigot is fitted into the socket

d) all of the above

8 / 30

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

a) chlorides

b) sulphates

c) nitrates

d) phosphates

9 / 30

9. Water horsepower of a pump is given by

a) WHQ / 75

b) WHQ / 360

c) WHQ / 220

d) WHQ / 85

10 / 30

10. Thrust blocks are installed wherever there is a

a) change in the direction or size of the pipeline

b) change in the pressure line diagram

c) pipeline ends at a dead end

d) all of the above

11 / 30

11. A septic tank is a watertight tank where the following operation(s) take place:

a) sedimentation

b) sedimentation + digestion (anaerobic)

c) digestion (aerobic)

d) decomposition of organic and inorganic matter by bacteria

12 / 30

12. Excess concentration of magnesium salts in water causes

a) hardness

b) bitter taste

c) alkalinity

d) laxative effect

13 / 30

13. Which device warns that the liquid is above the pump level?

a) High-level alarm

b) Check valve

c) Union

d) Pump lift chain

14 / 30

14. The type of joint used in plastic pipe is

a) butt welding

b) solvent welding

c) thread joint

d) dresser coupling joint

15 / 30

15. The colour of water is measured on the platinum cobalt scale with the help of

a) thermometer

b) tintometer

c) turbidity meter

d) barometer

16 / 30

16. After incubating a 2.5% solution of a sewage sample for 5 days at 20°C, the depletion of oxygen was found to be 5 PPM. The BOD of the sewage will be recorded as:

a) 5 PPM

b) 50 PPM

c) 100 PPM

d) 200 PPM

17 / 30

17. The types of sewer suitable for a separate system where discharge is uniform are:

a) egg-shaped

b) horse-shoe

c) circular

d) elliptical

18 / 30

18. A good source of water requiring practically least treatment is

a) perennial river

b) impounded reservoir

c) deep well

d) elevated lake

19 / 30

19. If you have to design a simple water filtration unit for a community water supply system in Biratnagar, which type of filter will you choose in general?

a) slow sand filter

b) rapid sand filter

c) trickling filter

d) pressure filter

20 / 30

20. Salvaging is:

a) extraction of essence from waste

b) dumping of solid waste

c) sanitary land filling of solid waste

d) none of the above

21 / 30

21. The most commonly used coagulant is:

a) Alum

b) Lime

c) Chlorine

d) Bleaching powder

22 / 30

22. Dengue is termed as which type of disease?

a) Waterborne

b) Water washed

c) Water based

d) Water related

23 / 30

23. Pipes for water supply are tested for

a) pressure

b) leakage

c) dimensions

d) all of the above

24 / 30

24. When the fall in elevation is greater than 60cm, the manhole provided is called:

a) lamp hole

b) flight manhole

c) drop manhole

d) fall manhole

25 / 30

25. The water supply pipeline should be tested at a specified pressure for

a) one hour

b) two hours

c) three hours

d) four hours

26 / 30

26. The type of joint used in joining the plain ends of cast-iron pipes is

a) flanged joint

b) flexible joint

c) dresser coupling joint

d) socket and spigot joint

27 / 30

27. Grit chamber has a detention period of:

a) 45 sec to 90 sec

b) 2 min to 5 min

c) 20 min to 30 min

d) 2 hours to 4 hours

28 / 30

28. Iron in water causes

a) stains on clothes

b) eutrophication

c) rust

d) corrosion

29 / 30

29. The bacteria which require free oxygen for their survival are called:

a) aerobic bacteria

b) anaerobic bacteria

c) facultative bacteria

d) none of the above

30 / 30

30. Booster pump is used for

a) water supply

b) sewage pumping

c) pressure increase

d) drinking purposes

Please provide accurate information so we can send your Achievement Certificate by mail.

NameEmailPhone Number

Your score is

Please provide your feedback.

Thank you for your valuable feedback.

Buy Water Supply & Sanitation Engineering MCQ PDF for Offline Study

Water Supply & Sanitation Engineering Online Test – Paper 2

Please provide accurate information so we can send your Achievement Certificate by mail.

Related MCQs