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. Impetus valve/waste valve is provided in a) hydraulic ram b) centrifugal pump c) rotary pump d) all of the above 2 / 30 2. In water analysis, the test carried out is a) physical b) chemical c) biological d) all of the above 3 / 30 3. Water demand of a city includes a) domestic water demand b) commercial and industrial demand c) fire and public-use demand d) all of the above 4 / 30 4. An aquiclude is a) a non-artesian aquifer b) a large underground water body c) a confined bed of impervious material between aquifers d) an artesian aquifer 5 / 30 5. A source of colour in water is due to a) silt b) clay c) organic debris d) inorganic inert matter 6 / 30 6. Following material is used during drilling to prevent caving a) bentonite b) thixotropy c) both (a) and (b) above d) none of the above 7 / 30 7. Merit of water carriage sewage system: a) no human agency is involved in this system b) no problem of foul smell or hygienic trouble c) less area is required d) all of the above 8 / 30 8. Excess concentration of sodium salts in water causes a) hardness b) bitter taste c) alkalinity d) laxative effect 9 / 30 9. 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 10 / 30 10. The design discharge for the combined system shall be taken equal to: a) rainfall b) rainfall + dry weather flow c) rainfall + 2× dry weather flow d) rainfall + 4× dry weather flow 11 / 30 11. The valve provided at low points of the pipe to drain off water quickly under gravity is a) drain valve b) blow-off valve c) sewer valve d) all of the above 12 / 30 12. For separate and partially separate systems, the pattern of collection suitable is: a) perpendicular pattern b) interceptor pattern c) radial pattern d) fan pattern 13 / 30 13. Size of colloidal particles present in water is a) 10 to 10^-1 mm b) 10^-1 to 10^-3 mm c) 10^-3 to 10^-6 mm d) 10^-6 to 10^-9 mm 14 / 30 14. To determine the velocity of the flow of underground water, the most commonly used non-empirical formula is....formula: a) Darcy's b) Slitcher's c) Hazen's d) Lacy's 15 / 30 15. The object of cowl is to: a) give an ornamental look b) prevent the entry of rainfall into the waste pipe c) quickly dispel foul gases d) prevent nest building 16 / 30 16. The ratio of the maximum daily consumption to the average demand is a) 1.2 b) 1.5 c) 1.8 d) 2.7 17 / 30 17. Sterilization is the process of a) killing of diseases bacteria b) produce of diseases of water c) no change diseases bacteria d) eliminating all life 18 / 30 18. Presence of algae in water indicates that the water is a) hard b) soft c) acidic d) pure 19 / 30 19. The types of pump suitable for water as well as sewage a) rotary pump b) centrifugal pump c) reciprocating pump d) impulse pump 20 / 30 20. The type of joint used in plastic pipe is a) butt welding b) solvent welding c) thread joint d) dresser coupling joint 21 / 30 21. In the partially ventilated single-stack system of plumbing, the number of vertical pipes is: a) 1 b) 2 c) 3 d) 4 22 / 30 22. A goose neck is: a) a bent flexible pipe between ferrule and stop cock b) a T-shaped brass between ferrule and water meter c) a straight G.I. pipe between the service pipe and stop cock d) a bent rigid pipe between the service pipe and water meter 23 / 30 23. The most widely used tube well in Nepal is a) strainer well b) cavity well c) slotted d) perforated well 24 / 30 24. Suitable sewer section for both combined and separate systems is: a) circular section b) rectangular section c) egg-shaped section d) horse-shoe type section 25 / 30 25. Water to the consumers may be supplied from a) rainy wells sunk to the water level b) infiltration well dug out on the banks of rivers c) infiltration galleries connected to a sump well d) all of the above 26 / 30 26. 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 27 / 30 27. In the one-pipe system of plumbing, the number of vertical pipes is: a) 1 b) 2 c) 3 d) 4 28 / 30 28. The water supply demand in a day school without a boarder should be a) 10 lpcd b) 20 lpcd c) 30 lpcd d) 40 lpcd 29 / 30 29. What will happen if an induction motor pump is run under significantly low voltage continually? a) Less water is pumped b) High energy will be consumed, increasing the energy bill c) The motor will make loud noise d) The motor will ultimately burn-out 30 / 30 30. Absolutely soft waters are required for a) drinking b) boilers c) prevention of corrosion in pipes d) washing with synthetic detergent soap 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
