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. Total Questions: 20 Time Allotted: 30 minutes Passing Score: 40% Randomization: No Certificate: No Do not refresh the page! 👍 All the best! 1 / 20 1. The last trap provided in a house drainage system is: a) q-trap b) floor trap c) nahni trap d) interception trap 2 / 20 2. Any trap is intended to trap foul gases with the provision of: a) clear seal b) sewage or sullage c) otta seal d) water seal 3 / 20 3. The color of septic sewage is: a) grey b) black c) white d) blue 4 / 20 4. Nahni trap is made of: a) mud b) cast iron c) steel d) all of the above 5 / 20 5. In the partially ventilated single-stack system of plumbing, the number of vertical pipes is: a) 1 b) 2 c) 3 d) 4 6 / 20 6. Flush air inlets are sometimes called: a) ventilated lamp holes b) well hole c) clean outs d) flushing tank 7 / 20 7. A structure constructed to remove obstacles in the sewer is known as: a) catch basin b) well holes c) clean outs d) flushing tanks 8 / 20 8. A lamp hole is helpful in: a) illuminating sewer line b) cleaning sewer line c) repairing d) testing sewers 9 / 20 9. Before entering a manhole, a candle is lowered into the manhole: a) to illuminate it b) to detect toxic gases c) to give a signal to the adjacent manhole d) to find out the presence of oxygen 10 / 20 10. Drop manholes are provided on sewers in: a) hilly towns b) plain towns c) manholes are deep d) none of the above 11 / 20 11. The best sewer material to resist hydrogen sulfide corrosion is: a) RCC b) brick masonry c) glazed stoneware d) asbestos cement 12 / 20 12. Stoneware pipes are generally not used for sewer mains because they are: a) weak in compression b) weak in tension c) hydraulically less efficient d) less resistant to organic corrosion 13 / 20 13. Which is in the correct order? a) house s.-Lateral s.-Branch s.-Sub-main s.-Main (Trunk)-outfall sewer b) house s.-Lateral s.-Branch s.-Sub-main s.-Outfall s.-Main (Trunk) sewer c) main (Trunk)-Outfall s.-House s.-Lateral s.-Branch s.-Sub-main sewer d) lateral s.-Branch s.-Sub-main s.-Main (Trunk)-Outfall s-House sewer 14 / 20 14. Clean out is provided in the underground......sewer in place of manhole. a) main sewer b) trunk sewer c) outfall sewer d) lateral sewer 15 / 20 15. Sewer preferred for a combined system of sewage is: a) rectangular sewer b) circular sewer c) egg-shaped sewer d) all of the above 16 / 20 16. The pipe joint commonly used in a pumping station is a) flexible joint b) expansion joint c) flanged joint d) socket and spigot joint 17 / 20 17. In order to consider temperature changes, metal pipes are usually provided with a) expansion joints b) contraction joints c) anchorages d) pressure relief valves 18 / 20 18. The type of joint generally used in cast-iron pipes is a) flanged joint b) socket and spigot joint c) dresser coupling joint d) all of the above 19 / 20 19. The types of joint not used to resist shock, vibration, etc. is a) dresser coupling joint b) victaulic joint c) flanged joint d) flexible joint 20 / 20 20. 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 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
