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. A structure constructed where self-cleaning velocity is not developed to prevent choking is called: a) catch basin b) flushing tank c) manhole d) inverted siphon 2 / 30 2. The average discharge of a tube-well is about a) 5 liters/sec b) 50 liters/sec c) 100 liters/sec d) 500 liters/sec 3 / 30 3. The most dangerous metal for human health is a) zinc b) copper c) lead d) iron 4 / 30 4. In water analysis, the test carried out is a) physical b) chemical c) biological d) all of the above 5 / 30 5. A G.I. pipe has a coating of a) zinc b) lead c) silver d) aluminum 6 / 30 6. The open channels supported above the ground over trestles are called a) tunnel b) aqueduct c) flume d) conduit 7 / 30 7. Hydrants are used for tapping water from mains for: a) fire extinguishing b) street washing c) flushing sewer lines d) all of the above 8 / 30 8. The bacteria which can survive with or without oxygen is known as... a) aerobic bacteria b) anaerobic bacteria c) facultative bacteria d) none of the above 9 / 30 9. The ratio of maximum hourly consumption and average hourly consumption of the maximum day is a) 1.2 b) 1.5 c) 1.8 d) 2.7 10 / 30 10. Abyssinian tube well is a special type of a) strainer type tube well b) cavity type tube well c) slotted type tube well d) perforated type tube well 11 / 30 11. The minimum diameter of a sewer pipe should be: a) 5 cm b) 10 cm c) 15 cm d) 25 cm 12 / 30 12. Where it is not possible to obtain self-cleansing velocities for sewers, flush are provided with the minimum available head of: a) 1-3 m b) 3-5 m c) 5-7 m d) 7-10 m 13 / 30 13. The water supply demand in a fully plumbed system in Nepal context a) 45 lpcd b) 65 lpcd c) 112 lpcd d) 135 lpcd 14 / 30 14. Advantage of pressure conduits is a) flow is independent of the grade of the hydraulic grade line b) economical since it follows a shorter path c) less chance of water pollution as it is closed d) all of the above 15 / 30 15. From the septic tank, the effluents are discharged into: a) drainage b) soak pit c) sewer d) none of the above 16 / 30 16. The distribution mains in a water supply system are designed for a) maximum daily demand b) peak hourly demand c) average daily demand d) maximum hourly demand on the maximum consumption day 17 / 30 17. During the water test of sewer, 2 lit/cm of dia/km of sewer line may be allowed for a period of: a) 5 minutes b) 30 minutes c) 15 minutes d) 20 minutes 18 / 30 18. According to the guidelines of DWSS, the maximum number of users in each stand post should be: a) 50 b) 100 c) 150 d) 200 19 / 30 19. The maximum pressure which the pipe can withstand without any leakage during the hydrostatic pressure test is called a) working pressure b) test pressure c) design pressure d) none of the above 20 / 30 20. Which traps have perpendicular legs? a) P-Trap b) Q-Trap c) gully trap d) S-Trap 21 / 30 21. It is practical to design sewer for the self-cleaning velocity at: a) Ultimate peak flow b) Maximum flow c) Minimum flow d) Extra flow 22 / 30 22. Turbidity of water sample depends on a) concentration and density of suspended and colloidal solids b) concentration of suspended, colloidal, and dissolved solids c) concentration of organic and inorganic matter d) concentration, size, shape, and refractive index of suspended solids 23 / 30 23. Which traps have curved legs? a) P-Trap b) Q-Trap c) gully trap d) S-Trap 24 / 30 24. Time of concentration depends upon: a) slope of the catchment b) intensity of rainfall c) nature of soil d) all of the above 25 / 30 25. Grade aqueducts are not allowed to run a) one-fourth full b) half c) three d) full 26 / 30 26. Following material is used during drilling to prevent caving a) bentonite b) thixotropy c) both (a) and (b) above d) none of the above 27 / 30 27. Computation of discharges is difficult for: a) dead-end system b) grid iron system c) ring system d) radial system 28 / 30 28. The types of diseases caused due to the lack of water are known as a) waterborne b) water-washed c) water-based d) water vector 29 / 30 29. Sewer has to bear: a) internal pressure of sewage b) temperature stresses c) forces due to external loads d) all of the above 30 / 30 30. 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 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