Home» Online Test » Civil Engineering » Water Supply & Sanitation Engineering Online Test » Paper 1 » Paper 2 » Paper 3 0% Sorry, time's up. To complete the online test, please restart it. 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. Ovoid sewers are best suited for: a) separate system b) combined system with less fluctuations c) combined system with very wide fluctuations d) outfall sewer 2 / 30 2. Which is the oldest waterworks in Nepal? a) Bhim Dhara scheme b) Bir Dhara scheme c) Sundarijal scheme d) Dudh Pokhari scheme 3 / 30 3. Which metal is good for keeping drinking water? a) copper b) brass c) zinc d) iron 4 / 30 4. PH value is a symbol for....material: a) hydrogen b) magnesium c) calcium d) sodium 5 / 30 5. An egg-shaped section of sewer: a) is economical than a circular section b) is more stable than a circular section c) provides self-cleansing velocity at low discharge d) all of the above 6 / 30 6. Turbidity is the ability of water to a) retain suspended solids b) retain colloidal solids in suspension c) detain dissolved solids. d) scatter light 7 / 30 7. The self-cleaning velocity normally adopted for a sewer is: a) less than 1 m/sec b) 1.0 m/sec to 1.2 m/sec c) 1.5 m/sec to 1.2 m/sec d) more than 2.0 m/sec 8 / 30 8. The location of a well is considered good if it is sunk into a) coarse gravel b) silt c) sand d) clay 9 / 30 9. Treatment of sewage of small estates and colonies is done by: a) aerated lagoon b) oxidation pond c) oxidation ditch d) all of the above 10 / 30 10. 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 11 / 30 11. The color of septic sewage is: a) grey b) black c) white d) blue 12 / 30 12. The most suitable excreta disposal unit for human excreta is: a) Privy pit b) Cesspool c) Soak pit d) None of the above 13 / 30 13. Detention time for the detritus tank is: a) 1-2 minutes b) 2-3 minutes c) 3-4 minutes d) 4-5 minutes 14 / 30 14. Excess concentration of magnesium salts in water causes a) hardness b) bitter taste c) alkalinity d) laxative effect 15 / 30 15. The last trap provided in a house drainage system is: a) q-trap b) floor trap c) nahni trap d) interception trap 16 / 30 16. The specific retention is least in the soil type a) coarse gravel b) sand c) clay d) silt 17 / 30 17. To compensate for losses, thefts, and wastage of water, an allowance made of (as per NWSC) a) 5% b) 10% c) 15% d) 35% 18 / 30 18. Groundwater is generally free from a) suspended impurities b) dissolved impurities c) both (a) and (b) of the above d) none of the above 19 / 30 19. The head developed in a centrifugal pump, at zero discharge is known as a) low head b) high head c) medium head d) shut off head 20 / 30 20. For an insignificant effect on the water table, the tube wells are spaced as one in every a) 0.5 sq km b) 1.0 sq km c) 1.5 sq km d) 2.0 sq km 21 / 30 21. R.M.O. means a) running b) maintenance c) operation d) all of the above 22 / 30 22. "A right-angled sleeve (valve) connected in the water main through which water is tapped for domestic supply is called: a) service pipe b) goose neck c) ferrule d) stop tap 23 / 30 23. Iron in water causes a) stains on clothes b) eutrophication c) rust d) corrosion 24 / 30 24. Which traps have parallel legs? a) P-Trap b) Q-Trap c) gully trap d) S-Trap 25 / 30 25. Following material is used during drilling to prevent caving a) bentonite b) thixotropy c) both (a) and (b) above d) none of the above 26 / 30 26. Which device warns that the liquid is above the pump level? a) High-level alarm b) Check valve c) Union d) Pump lift chain 27 / 30 27. Grade aqueducts are not allowed to run a) one-fourth full b) half c) three d) full 28 / 30 28. A source of colour in water is due to a) silt b) clay c) organic debris d) inorganic inert matter 29 / 30 29. The water which is not chemically pure but does not contain anything harmful to human health is known as a) pure water b) wholesome water c) polluted water d) none of the water 30 / 30 30. The amount of BOD in domestic water should be a) 1 ppm b) 2 ppm c) 3 ppm d) nil Please provide accurate information so we can send your Achievement Certificate by mail. NameEmailPhone Number Your score is Share your achievement! LinkedIn Facebook Twitter 0% Restart Test Please provide your feedback. Thank you for your valuable feedback. Send feedback Buy Water Supply & Sanitation Engineering MCQ PDF for Offline Study
