MCQOPTIONS
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MCQOPTIONS
This section includes 412 Mcqs, each offering curated multiple-choice questions to sharpen your Surveying knowledge and support exam preparation. Choose a topic below to get started.
| 151. |
In a reservoir the average volume of sediment deposition is 0.15 million cubic per year. If the dead storage and total capacity of the reservoir are 8 million cubic metres and 36 million cubic metres respectively, |
| A. | the reservoir will theoretically be silted in 240 years |
| B. | the reservoir will start reducing after 60 years |
| C. | both (a) and (b) |
| D. | neither (a) nor (b). |
| Answer» D. neither (a) nor (b). | |
| 152. |
A strainer type well sunk through three pervious layers intervened by three impervious aquicludes, draws water from |
| A. | top most pervious layer |
| B. | central pervious layer |
| C. | lowest pervious layer |
| D. | all the pervious layers. |
| Answer» E. | |
| 153. |
The U.C. (uniformity coefficient) D₆₀/D₁₀ for the best filter media sand should be |
| A. | 2 |
| B. | 3 |
| C. | 4 |
| D. | 5 |
| Answer» B. 3 | |
| 154. |
135 litres of water per person per day, is provided in |
| A. | nurses homes |
| B. | hostels |
| C. | residential schools |
| D. | all the above. |
| Answer» E. | |
| 155. |
The ensure proper growth of children's teeth, the quantity of flouride used in water mains, is |
| A. | 1 mg/litre |
| B. | 2 mg/litre |
| C. | 3 mg/litre |
| D. | 4 mg/litre |
| Answer» B. 2 mg/litre | |
| 156. |
Water losses in water supply, is assumed as |
| A. | 5% |
| B. | 7.5% |
| C. | 10% |
| D. | 15%. |
| Answer» E. | |
| 157. |
Shales are |
| A. | porous |
| B. | permeable |
| C. | porous and permeable |
| D. | porous but not permeable |
| Answer» E. | |
| 158. |
Pick up the incorrect statement from the following. The source of surface water is from |
| A. | streams and rivers |
| B. | storage reservoirs |
| C. | springs |
| D. | ponds and lakes |
| Answer» D. ponds and lakes | |
| 159. |
Standard unit of turbidity of water is in one litre of distilled water, one milligram of finely divided |
| A. | silica |
| B. | mud |
| C. | clay |
| D. | organic matter. |
| Answer» B. mud | |
| 160. |
Sluice valves are fitted in a distribution system |
| A. | along straight length of pipes at suitable intervals |
| B. | at the junctions of the pipes |
| C. | at the branching off points of sub-mains |
| D. | all the above. |
| Answer» E. | |
| 161. |
The main disadvantage of hard water, is |
| A. | greater soap consumption |
| B. | scaling of boilers |
| C. | corrosion and incrustation of pipes |
| D. | all the above. |
| Answer» E. | |
| 162. |
The coefficient of permeability of soils, is generally expressed in |
| A. | cm/sec |
| B. | cm/minute |
| C. | cm²/sec |
| D. | cm²/minute. |
| Answer» B. cm/minute | |
| 163. |
The total domestic consumption in a city water supply, is assumed |
| A. | 20% |
| B. | 30% |
| C. | 40% |
| D. | 60%. |
| Answer» E. | |
| 164. |
Sluice valves in main water supplies |
| A. | are used to regulate the flow of water in pipes |
| B. | are spaced about 5 km apart |
| C. | are usually placed at the summits |
| D. | all the above. |
| Answer» E. | |
| 165. |
Check valves are installed |
| A. | on the delivery side of the pumping set |
| B. | at the interconnections between polluted water system and a potable water system |
| C. | both (a) and (b) |
| D. | neither (a) nor (b). |
| Answer» D. neither (a) nor (b). | |
| 166. |
Percussion drilling is unsuitable in |
| A. | unconsolidated sand |
| B. | unconsolidated gravel |
| C. | quick sand |
| D. | consolidated rocks. |
| Answer» E. | |
| 167. |
Dissolved carbon dioxide, can be removed from the supply main by |
| A. | sedimentation |
| B. | aeration |
| C. | chlorination |
| D. | coagulation |
| Answer» C. chlorination | |
| 168. |
While selecting the location of an intake for collecting surface water, the factor considered, is |
| A. | The intake point should be near as far as possible to the treatment plant |
| B. | The intake point should be in purer zone of the water source |
| C. | The intake point should be upstream of the point of disposal of waste water |
| D. | All the above |
| Answer» E. | |
| 169. |
The best quality of filter material is obtained from quartzite if it does not loose weight when placed in hydro-chloric acid for 24 hours, more than |
| A. | 5% |
| B. | 8% |
| C. | 10% |
| D. | 12% |
| Answer» B. 8% | |
| 170. |
Disinfection of water with ozone is not good because |
| A. | it vanishes before water reaches the consumers |
| B. | it removes the colour, taste and odour from water as bacterias |
| C. | it adds taste to the water |
| D. | it is more efficient than chlorine in killing bacterias |
| Answer» E. | |
| 171. |
Detention time for plain sedimentation tank usually ranges from |
| A. | 2 to 4 hours |
| B. | 4 to 8 hours |
| C. | 6 to 10 hours |
| D. | 8 to 12 hours |
| Answer» C. 6 to 10 hours | |
| 172. |
Flow through period, in sedimentation tanks, is |
| A. | equal to detention period |
| B. | more than detention period |
| C. | less than detention period |
| D. | detention period divided by displacement efficiency |
| Answer» D. detention period divided by displacement efficiency | |
| 173. |
The valves provided at low points of pipes to drain off water quickly under gravity, are called |
| A. | blow off valves |
| B. | drain valves |
| C. | sewer valves |
| D. | all the above. |
| Answer» E. | |
| 174. |
In an artesian acquifer, the draw downs in two observation wells at distances 100 m, and 200 m were found same after one hour and x hours respectively. The value of x, is |
| A. | 2 hours |
| B. | 4 hours |
| C. | 9 hours |
| D. | 16 hours. |
| Answer» C. 9 hours | |
| 175. |
The most ideal disinfectant used for drinking water throughout the world, is |
| A. | alum |
| B. | lime |
| C. | chlorine |
| D. | nitrogen |
| Answer» D. nitrogen | |
| 176. |
Normal values of overflow rate for sedimentation tanks using coagulants in litres/hr/m² , generally range between |
| A. | 250 to 500 |
| B. | 500 to 750 |
| C. | 750 to 1000 |
| D. | 1000 to 1250 |
| Answer» E. | |
| 177. |
Turbidity of water may be caused due to |
| A. | Suspended clay |
| B. | Suspended silt |
| C. | finely divided organic material |
| D. | all the above. |
| Answer» E. | |
| 178. |
To control the growth of algae in reservoirs, the compound which is used, is |
| A. | bleaching powder |
| B. | copper sulphate |
| C. | lime solution |
| D. | alum solution |
| Answer» C. lime solution | |
| 179. |
A city supply includes |
| A. | domestic water demand |
| B. | industrial and commercial water demands |
| C. | demand for public uses and fire |
| D. | all the above. |
| Answer» E. | |
| 180. |
The force which develops in a pressure conduit supported on trestles, is |
| A. | tension |
| B. | compression |
| C. | temperature stress |
| D. | flexural stress. |
| Answer» E. | |
| 181. |
A water channel supported above the ground over trestles, is generally called |
| A. | flume |
| B. | canal |
| C. | adueduct |
| D. | tunnel |
| Answer» B. canal | |
| 182. |
Manholes are less common in |
| A. | cast iron pipes |
| B. | steel pipes |
| C. | hume steel pipes |
| D. | R.C.C. pipes. |
| Answer» B. steel pipes | |
| 183. |
Rapid gravity filters can remove bacterial impurities up to a maximum of |
| A. | 50% |
| B. | 60% |
| C. | 70% |
| D. | 80% |
| Answer» E. | |
| 184. |
Aqueducts are generally designed |
| A. | circular |
| B. | rectangular |
| C. | horse shoe section |
| D. | all the above. |
| Answer» E. | |
| 185. |
Filtration of water is done to remove |
| A. | colour |
| B. | odour |
| C. | turbidity |
| D. | pathogenic bacteria |
| Answer» D. pathogenic bacteria | |
| 186. |
The bacterias which may survive with or without free oxygen, are called |
| A. | Aerobic bacterias |
| B. | Anaerobic bacterias |
| C. | Faculative bacteria's |
| D. | None of these. |
| Answer» D. None of these. | |
| 187. |
To remove very fine suspended particles from water, the method adopted is |
| A. | screening |
| B. | sedimentation |
| C. | boiling |
| D. | filtration. |
| Answer» E. | |
| 188. |
A circular gravity aqueduct is not generally preferred to because of |
| A. | its maximum hydraulic mean depth |
| B. | maximum area per unit of wetted perimeter |
| C. | minimum cost of construction |
| D. | its proper support on the ground. |
| Answer» E. | |
| 189. |
Normal values of overflow rate for plain sedimentation tank using coagulants, is |
| A. | 750 to 1000 litres/hr/m² |
| B. | 1000 to 1250 litres/hr/m² |
| C. | 1250 to 1500 litres/hr/m² |
| D. | 1500 litres/hr/m². |
| Answer» C. 1250 to 1500 litres/hr/m² | |
| 190. |
Specific yield of a well is |
| A. | quantity of water than can be drawn from the well |
| B. | flow of water per unit time |
| C. | total quantity of water available in the well |
| D. | quantity of water per unit time per unit draw-down. |
| Answer» D. quantity of water per unit time per unit draw-down. | |
| 191. |
Alum is chemically |
| A. | Copper sulphate |
| B. | Aluminium sulphate |
| C. | Ferrous sulphate |
| D. | Ferric sulphate. |
| Answer» C. Ferrous sulphate | |
| 192. |
Water supply includes |
| A. | collection, transportation and treatment of water |
| B. | distribution of water to consumers |
| C. | provision of hydrants for fire fighting |
| D. | all the above. |
| Answer» E. | |
| 193. |
The maximum permissible chloride content in treated water of public water supplies should not exceed |
| A. | 50 P.P.M. |
| B. | 100 P.P.M. |
| C. | 150 P.P.M. |
| D. | 250 P.P.M. |
| Answer» E. | |
| 194. |
In distribution pipes, drain valves are provided at |
| A. | lower point |
| B. | higher point |
| C. | junction points |
| D. | any where. |
| Answer» B. higher point | |
| 195. |
Alkalinity in water may be caused due to |
| A. | calcium and magnesium bicarbonates |
| B. | sodium carbonate |
| C. | potassium carbonate |
| D. | all the above. |
| Answer» E. | |
| 196. |
'Shrouding' is essentially provided in |
| A. | strainer type wells |
| B. | cavity type wells |
| C. | slotted type well |
| D. | all the above. |
| Answer» D. all the above. | |
| 197. |
Rapid gravity filter can only remove turbidity of water upto |
| A. | 15 to 25 gm/litre |
| B. | 25 to 30 gm/litre |
| C. | 30 to 35 cm/litre |
| D. | 35 to 40 gm/litre |
| Answer» E. | |
| 198. |
Gravity conduits for carrying water from the source are |
| A. | canals |
| B. | flumes |
| C. | acqueducts |
| D. | all the above. |
| Answer» E. | |
| 199. |
Rapid gravity filters |
| A. | were developed by G.W. Fullar |
| B. | make use of coarser sand with effective size as 0.5 mm |
| C. | yield as high as 30 times the yield of slow sand filters |
| D. | all the above. |
| Answer» E. | |
| 200. |
If w is the weight of water per cubic metre, Q is the discharge in cubic metres per sec and H is the total head, the required water horse power of the pump, is |
| A. | wQH/15 |
| B. | wQH/360 |
| C. | wQH/220 |
| D. | wQH/550 |
| Answer» B. wQH/360 | |