MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 238 Mcqs, each offering curated multiple-choice questions to sharpen your Civil Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The expression of the Chezy s formula is given by |
| A. | v = c/rs |
| B. | v = crs2 |
| C. | v = c (rs)1/2 |
| D. | v = c/ (rs)1/2 |
| Answer» D. v = c/ (rs)1/2 | |
| 2. |
The recirculation ratio for the low rate trickling filter is |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 0 |
| Answer» E. | |
| 3. |
Which of the following unit works in anaerobic conditions ? |
| A. | sludge digestion tank |
| B. | sedimentation tank |
| C. | activated sludge treatment |
| D. | trickling filters |
| Answer» B. sedimentation tank | |
| 4. |
Which of the following sewers is preferred for combined system of sewage ? |
| A. | circular sewer |
| B. | egg shaped sewer |
| C. | rectangular sewer |
| D. | none of the above |
| Answer» C. rectangular sewer | |
| 5. |
Which of the following retards the self purification of stream ? |
| A. | higher temperature |
| B. | sunlight |
| C. | satisfying oxygen demand |
| D. | none of the above |
| Answer» E. | |
| 6. |
Which of the following methods of analysis of water distribution system is most suitable for long and narrow pipe system ? |
| A. | circle method |
| B. | equivalent pipe method |
| C. | Hardy cross method |
| D. | electrical analysis method |
| Answer» C. Hardy cross method | |
| 7. |
Which of the following is not a water borne disease ? |
| A. | dysentery |
| B. | cholera |
| C. | typhoid |
| D. | maleria |
| Answer» E. | |
| 8. |
Which of the following compounds is widely used for algae control ? |
| A. | sodium sulphate |
| B. | copper sulphate |
| C. | sodium chloride |
| D. | calcium chloride |
| Answer» C. sodium chloride | |
| 9. |
Which of the following chemical compounds can be used for dechlorination of water ? |
| A. | carbon dioxide |
| B. | bleaching powder |
| C. | sulphur dioxide |
| D. | chloramines |
| Answer» D. chloramines | |
| 10. |
Which of the following causes a decrease in per capita consumption ? |
| A. | use of metering system |
| B. | good quality of water |
| C. | better standard of living of the people |
| D. | hotter climate |
| Answer» B. good quality of water | |
| 11. |
When there is no recirculation of sewage, then recirculation factor is_______________? |
| A. | 0 |
| B. | 1 |
| C. | infinity |
| D. | none of the above |
| Answer» C. infinity | |
| 12. |
Turbidity is measured on_______________? |
| A. | standard silica scale |
| B. | standard cobalt scale |
| C. | standard platinum scale |
| D. | platinum cobalt scale |
| Answer» B. standard cobalt scale | |
| 13. |
The working conditions in imhoff tanks are_______________? |
| A. | aerobic only |
| B. | anaerobic only |
| C. | aerobic in lower compartment and anaerobic in upper compartment |
| D. | anaerobic in lower compartment and aerobic in upper compartment |
| Answer» E. | |
| 14. |
The water carriage system of collection of waste product________________? |
| A. | is cheaper in initial cost than dry conservancy system |
| B. | requires treatment before disposal |
| C. | creates hygenic problem |
| D. | all of the above |
| Answer» C. creates hygenic problem | |
| 15. |
The velocity of flow of water in a sedimentation tank is about__________________? |
| A. | 5 to 10 cm/sec. |
| B. | 15 to 30 cm/sec. |
| C. | 15 to 30 cm/minute |
| D. | 15 to 30 cm/hour |
| Answer» D. 15 to 30 cm/hour | |
| 16. |
The velocity of flow does not depend on_______________? |
| A. | grade of sewer |
| B. | length of sewer |
| C. | hydraulic mean depth of sewer |
| D. | roughness of sewer |
| Answer» C. hydraulic mean depth of sewer | |
| 17. |
The type of valve which is provided to control the flow of water in the distribution system at street corners and where the pipe lines intersect is_______________? |
| A. | check valve |
| B. | sluice valve |
| C. | safety valve |
| D. | scour valve |
| Answer» C. safety valve | |
| 18. |
The type of valve, which is provided on the suction pipe in a tube-well, is____________? |
| A. | air relief valve |
| B. | reflux valve |
| C. | pressure relief valve |
| D. | sluice valve |
| Answer» C. pressure relief valve | |
| 19. |
The type of valve which allows water to flow in one direction but prevents its flow in the reverse direction is____________________? |
| A. | reflux valve |
| B. | sluice valve |
| C. | air relief valve |
| D. | pressure relief valve |
| Answer» B. sluice valve | |
| 20. |
The type of sewer which is suitable for both combined and separate system is_____________? |
| A. | circular sewer |
| B. | egg shaped sewer |
| C. | horse-shoe type sewer |
| D. | semi-elliptical sewer |
| Answer» C. horse-shoe type sewer | |
| 21. |
The treatment of water with bleaching powder is known as________________? |
| A. | prechlorination |
| B. | super chlorination |
| C. | dechlorination |
| D. | hypochlorination |
| Answer» E. | |
| 22. |
The time of concentration is defined as_______________? |
| A. | the time taken by rainfall water to run from most distant point of water shed to the inlet of sewer |
| B. | the time required for flow of water in sewer to the point under consideration |
| C. | sum of (A) and (B) |
| D. | difference of (A) and (B) |
| Answer» D. difference of (A) and (B) | |
| 23. |
The suitable system of sanitation for area of distributed rainfall throughout the year with less intensity is_________________? |
| A. | separate system |
| B. | combined system |
| C. | partially separate system |
| D. | partially combined system |
| Answer» C. partially separate system | |
| 24. |
The suitable method of forecasting popu¬lation for a young and rapidly increasing city is_________________? |
| A. | arithmetical increase method |
| B. | geometrical increase method |
| C. | incremental increase method |
| D. | graphical method |
| Answer» C. incremental increase method | |
| 25. |
The suitable layout of distribution system for a city with roads of rectangular pattern is______________? |
| A. | grid iron system |
| B. | dead end system |
| C. | ring system |
| D. | radial system |
| Answer» B. dead end system | |
| 26. |
The suitable layout of a distribution system for irregularly growing town is_______________? |
| A. | dead end system |
| B. | grid iron system |
| C. | radial system |
| D. | ring system |
| Answer» B. grid iron system | |
| 27. |
The suitable method for disinfection of swimming pool water is________________? |
| A. | ultra violet rays treatment |
| B. | lime treatment |
| C. | by using potassium permanganate |
| D. | chlorination |
| Answer» B. lime treatment | |
| 28. |
The specific gravity of sewage is_______________? |
| A. | much greater than 1 |
| B. | slightly less than 1 |
| C. | equal to 1 |
| D. | slightly greater than 1 |
| Answer» E. | |
| 29. |
The slope of sewer shall be__________________? |
| A. | given in the direction of natural slope of ground |
| B. | given in the direction opposite to natural slope of ground |
| C. | zero |
| D. | steeper than 1 in 20 |
| Answer» B. given in the direction opposite to natural slope of ground | |
| 30. |
The settling velocity of a particle in a sedimentation tank increases if_________________? |
| A. | particle size is decreased |
| B. | the surface area of tank is increased |
| C. | the depth of tank is decreased |
| D. | none of the above |
| Answer» E. | |
| 31. |
The settling velocity of a particle in a sedimentation tank increases if______________? |
| A. | particle size is decreased |
| B. | the surface area of tank is increased |
| C. | the depth of tank is decreased |
| D. | none of the above |
| Answer» E. | |
| 32. |
The settling velocity of a particle in a sedimentation tank depends on__________________? |
| A. | depth of tank |
| B. | surface area of tank |
| C. | both depth and surface area of tank |
| D. | none of the above |
| Answer» C. both depth and surface area of tank | |
| 33. |
The self cleansing velocity for all sewers in India is usually_________________? |
| A. | less than 1.0 m/sec |
| B. | 1.0 m/sec to 1.2 m/sec |
| C. | 1.5 m/sec to 2.0 m/sec |
| D. | 3.0 m/sec to 3.5 m/sec |
| Answer» C. 1.5 m/sec to 2.0 m/sec | |
| 34. |
The relative stability of a sewage sample, whose dissolved oxygen is same as the total oxygen required to satisfy BOD, is______________? |
| A. | 1 |
| B. | 100 |
| C. | infinite |
| D. | zero |
| Answer» C. infinite | |
| 35. |
The ratio of 5 day BOD to ultimate BOD is about_______________? |
| A. | 1/3 |
| B. | 2/3 |
| C. | 3/4 |
| D. | 1.0 |
| Answer» C. 3/4 | |
| 36. |
The rate of filtration in slow sand filters in million litres per day per hectare is about_____________? |
| A. | 50 to 60 |
| B. | 100 to 150 |
| C. | 500 to 600 |
| D. | 1400 to 1500 |
| Answer» B. 100 to 150 | |
| 37. |
The rate of BOD exerted at any time is_____________? |
| A. | directly proportional to BOD satisfied |
| B. | directly proportional to BOD remain-ing |
| C. | inversely proportional to BOD satisfied |
| D. | inversely proportional to BOD re-maining |
| Answer» C. inversely proportional to BOD satisfied | |
| 38. |
The rate of Alteration of pressure filters is_________________? |
| A. | less than that of slow sand filters |
| B. | in between the filtration rate of slow sand filters and rapid sand filters |
| C. | greater than that of rapid sand filters |
| D. | equal to that of slow sand filters |
| Answer» D. equal to that of slow sand filters | |
| 39. |
The process of lagooning is primarily a means of________________? |
| A. | reducing the excessive flow in sewers |
| B. | disposing of sludge |
| C. | increasing the capacity of storage re-servoirs |
| D. | increasing flow of sewage through imhoff tanks |
| Answer» C. increasing the capacity of storage re-servoirs | |
| 40. |
The process in which the chlorination is done beyond the break point is known as_________________? |
| A. | prechlorination |
| B. | post chlorination |
| C. | super chlorination |
| D. | break point chlorination |
| Answer» D. break point chlorination | |
| 41. |
The population of a town in three consecutive years are 5000, 7000 and 8400 respectively. The population of the town in the fourth consecutive year according to geometrical increase method is________________? |
| A. | 9500 |
| B. | 9800 |
| C. | 10100 |
| D. | 10920 |
| Answer» E. | |
| 42. |
The polluted water is one which_______________? |
| A. | contains pathogenic bacteria |
| B. | consists of undesirable substances rendering it unfit for drinking and domestic use |
| C. | is safe and suitable for drinking and domestic use |
| D. | is contaminated |
| Answer» C. is safe and suitable for drinking and domestic use | |
| 43. |
The pipe which is used to carry the discharge from sanitary fittings like bath rooms, kitchens etc. is called_______________? |
| A. | waste pipe |
| B. | soil pipe |
| C. | vent pipe |
| D. | antisiphonage pipe |
| Answer» B. soil pipe | |
| 44. |
The phenolic compounds in public water supply should not be more than_______________? |
| A. | 0.1 ppm |
| B. | 0.01 ppm |
| C. | 0.001 ppm |
| D. | 0.0001 ppm |
| Answer» D. 0.0001 ppm | |
| 45. |
The percentage of filtered water, which is used for backwashing in rapid sand filters, is about______________? |
| A. | 0.2 to 0.4 |
| B. | 0.4 to 1.0 |
| C. | 2 to 4 |
| D. | 5 to 7 |
| Answer» D. 5 to 7 | |
| 46. |
The percentage of chlorine in fresh bleaching powder is about________________? |
| A. | 10 to 15 |
| B. | 20 to 25 |
| C. | 30 to 35 |
| D. | 40 to 50 |
| Answer» D. 40 to 50 | |
| 47. |
The per capital consumption of a locality is affected by_________________?_x005F_x000D_1) climatic conditions_x005F_x000D_2) quality of water_x005F_x000D_3) distribution pressure_x005F_x000D_The correct answer is? |
| A. | only (1) |
| B. | both (1) and (2) |
| C. | both (1) and (3) |
| D. | all (1), (2) and (3) |
| Answer» E. | |
| 48. |
The pathogens can be killed by_______________? |
| A. | nitrification |
| B. | chlorination |
| C. | oxidation |
| D. | none of the above |
| Answer» C. oxidation | |
| 49. |
The overflow rate for plain sedimentation tanks is about__________________? |
| A. | 500 to 750 litres/hour/ m2 |
| B. | 1000 to 1250 litres/hour/ m2 |
| C. | 1250 to 1500 litres/hour/m2 |
| D. | 1500 to 2000 litres/hour/m2 |
| Answer» B. 1000 to 1250 litres/hour/ m2 | |
| 50. |
The most commonly used sewer under culverts is_______________? |
| A. | circular brick sewer |
| B. | circular cast iron sewer |
| C. | semi-elliptical sewer |
| D. | horse-shoe type sewer |
| Answer» B. circular cast iron sewer | |