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.
| 201. |
The average domestic consumption under normal conditions in an Indian city per day per person, is |
| A. | 105 litres |
| B. | 115 litres |
| C. | 125 litres |
| D. | 135 litres |
| Answer» E. | |
| 202. |
Higher yield may be expected from |
| A. | gravity springs |
| B. | surface springs |
| C. | artesian springs |
| D. | all the above. |
| Answer» D. all the above. | |
| 203. |
Normal values of overflow rate for plain sedimentation tank, is |
| A. | 250 to 500 litres/hr/m² |
| B. | 500 to 750 litres/hr/m² |
| C. | 750 to 1000 litres/hr/m² |
| D. | 1000 to 1250 litres/hr/m². |
| Answer» C. 750 to 1000 litres/hr/m² | |
| 204. |
Turbidity of water is expressed |
| A. | in ppm |
| B. | in numbers in an arbitrary scale |
| C. | by pH value |
| D. | by colour code. |
| Answer» B. in numbers in an arbitrary scale | |
| 205. |
The approximate diameter of a water mains for supplying 7.2 mld with a velocity 1.2 m/sec, is |
| A. | 24 cm |
| B. | 26 cm |
| C. | 28 cm |
| D. | 30 cm |
| Answer» E. | |
| 206. |
In a well planned city, the layout of distribution pipes generally adopted, is |
| A. | grid-iron system |
| B. | interlaced system |
| C. | reticulation system |
| D. | all the above. |
| Answer» E. | |
| 207. |
Gravity conduits are generally in the form of |
| A. | canals |
| B. | flumes |
| C. | aqueduct |
| D. | all the above. |
| Answer» E. | |
| 208. |
Plain chlorination is used for water |
| A. | with turbidities less than 20 mg/litre |
| B. | obtained from clear lakes |
| C. | consumed during emergencies |
| D. | all the above. |
| Answer» E. | |
| 209. |
If n is porosity, y is specific yield and r is specific retention of any soil, the relationship which holds good, is |
| A. | n + y + r = 1 |
| B. | n + y = r |
| C. | n + r = y |
| D. | y + r = n |
| Answer» E. | |
| 210. |
The main process to purify water by filtration, is |
| A. | mechanical straining |
| B. | flocculation and sedimentation |
| C. | biological metabolism |
| D. | all the above. |
| Answer» E. | |
| 211. |
Pressure relief valves are provided in water mains |
| A. | to reduce the pressure |
| B. | at low points |
| C. | upstream of sluice |
| D. | all the above. |
| Answer» E. | |
| 212. |
The population of a city in 2000 is 50,000. The average increase in population over last 8 decades is 7500 and average incremental increase during 8 decades is 750. The population of the city based on incremental method, in the year 2020 will be |
| A. | 55,000 |
| B. | 60,500 |
| C. | 66,500 |
| D. | 72,500 |
| Answer» D. 72,500 | |
| 213. |
The storage capacity of a reservoir may be divided into three zones. The lowest zone is |
| A. | Dead storage |
| B. | Useful storage |
| C. | Surcharge storage |
| D. | None of these. |
| Answer» B. Useful storage | |
| 214. |
The order of existence of three portions of water in a reservoir from the bottom to top is |
| A. | useful storage + surcharge storage + dead storage |
| B. | useful storage + dead storage + surcharge storage |
| C. | dead storage + useful storage + surcharge storage |
| D. | surcharge storage + useful storage + dead storage |
| Answer» D. surcharge storage + useful storage + dead storage | |
| 215. |
Disappearance of pink colour of water of a well due of KMnO₄ indicates that water contains |
| A. | acidity |
| B. | alkalinity |
| C. | turbidity |
| D. | organic matter |
| Answer» E. | |
| 216. |
The pH value of water fit for drinking, is |
| A. | 13 |
| B. | 11 |
| C. | 9 |
| D. | 7 |
| Answer» E. | |
| 217. |
The strainer type tube well, is unsuitable for |
| A. | coarse gravels |
| B. | fine sandy strata |
| C. | clean gravels |
| D. | none of these. |
| Answer» C. clean gravels | |
| 218. |
If the average daily demand of a city of 50, 000 population, is 20 m.l.d., the maximum daily demand is |
| A. | 24 mld |
| B. | 30 mld |
| C. | 36 mld |
| D. | 54 mld. |
| Answer» D. 54 mld. | |
| 219. |
Surface water is obtained from |
| A. | well |
| B. | springs |
| C. | artesian well |
| D. | rain. |
| Answer» E. | |
| 220. |
The capability of a soil mass of full width and depth to transmit water, is known |
| A. | porosity |
| B. | permeability |
| C. | transmissibility |
| D. | none of these. |
| Answer» C. transmissibility | |
| 221. |
For 3.25 x 10^-2 cumecs discharging from a well, a pump is installed to lift water against a total head of 30 m. The minimum required horse power, is |
| A. | 10 H.P. |
| B. | 15 H.P. |
| C. | 18 H.P. |
| D. | 20 H.P. |
| Answer» E. | |
| 222. |
Total flow in stream is known |
| A. | run off |
| B. | stream flow |
| C. | discharge |
| D. | all the above. |
| Answer» E. | |
| 223. |
Pick up the incorrect statement from the following regarding fire hydrants |
| A. | Fire hydrants are fitted in water mains at 100 m to 150 m apart at fire |
| B. | The minimum water pressure hydrants, is kept 1.5 kg/cm² |
| C. | The water at pressure 1 to 1.5 kg/cm² is made available for 4 to 5 hours for constant use |
| D. | None of these. |
| Answer» E. | |
| 224. |
In pumping stations, the type of joint generally used, is |
| A. | socket and spigot joint |
| B. | flanged joint |
| C. | expansion joint |
| D. | dresser coupling joint |
| Answer» C. expansion joint | |
| 225. |
Mathamoglobinemia, or blue baby disease is caused due to |
| A. | chlorides |
| B. | nitrites |
| C. | nitrates |
| D. | sulphides. |
| Answer» D. sulphides. | |
| 226. |
Hardness of water is caused by |
| A. | presence of soap lather |
| B. | presence of chlorides and sulphates of sodium and potassium |
| C. | presence of bicarbonates, sulphates or chlorides of calcium and magnesium |
| D. | turbidity. |
| Answer» D. turbidity. | |
| 227. |
The best process of disinfection of public water supply, is by |
| A. | boiling |
| B. | chlorination |
| C. | adding lime |
| D. | adding zone. |
| Answer» C. adding lime | |
| 228. |
The most important and widely used tube well in India, is |
| A. | strainer well |
| B. | cavity well |
| C. | slotted well |
| D. | perforated pipe well. |
| Answer» B. cavity well | |
| 229. |
The main draw-back of centrifugal pump, is |
| A. | necessity of priming |
| B. | discharge from pump varies with the load of water |
| C. | for high heads, efficiency is low up to 50% |
| D. | all the above. |
| Answer» E. | |
| 230. |
Alum is a |
| A. | coagulant |
| B. | flocculant |
| C. | catalyst |
| D. | disinfectant. |
| Answer» B. flocculant | |
| 231. |
The maximum permissible colour for domestic supplies based on cobalt scale, is |
| A. | 5 ppm |
| B. | 10 ppm |
| C. | 15 ppm |
| D. | 20 ppm |
| Answer» E. | |
| 232. |
If average volume of sediment deposits is one-tenth million cubic metres per year in a reservoir of total capacity 10 million cubic metres, the dead storage will be filled up, in |
| A. | 10 years |
| B. | 15 years |
| C. | 20 years |
| D. | 25 years |
| Answer» E. | |
| 233. |
Bacterias which can survive with or without free oxygen, are known |
| A. | aerobic bacterias |
| B. | anerobic bacterias |
| C. | facultative bacterias |
| D. | none of these. |
| Answer» D. none of these. | |
| 234. |
The valve fitted closely in a recess against an opening in a pipe, is generally |
| A. | wedge shaped circular disc |
| B. | spherical disc |
| C. | parallelopiped disc |
| D. | conical shaped circular disc. |
| Answer» B. spherical disc | |
| 235. |
The maximum permitted loss of head in a rapid sand filter, is |
| A. | 1 m |
| B. | 2 m |
| C. | 3 m |
| D. | 4 m |
| Answer» D. 4 m | |
| 236. |
Distribution of wash water is provided in |
| A. | sedimentation tank |
| B. | slow sand filter |
| C. | rapid gravity filter |
| D. | all the above. |
| Answer» D. all the above. | |
| 237. |
Ground water from artesian wells |
| A. | contains no suspended materials |
| B. | contains dissolved salts |
| C. | may be saltish and hard |
| D. | all the above. |
| Answer» E. | |
| 238. |
In a rapid gravity filter |
| A. | raw water from the source is supplied |
| B. | disinfected raw water is supplied |
| C. | raw water passed through coagulation tank is supplied |
| D. | none of these. |
| Answer» D. none of these. | |
| 239. |
Hard water contains |
| A. | calcium |
| B. | magnesium bicarbonates |
| C. | magnesium sulphate |
| D. | all the above. |
| Answer» E. | |
| 240. |
For least effect on the water table, the tube wells must be dug one in every |
| A. | 0.5 sq km |
| B. | 0.75 sq km |
| C. | 1.0 sq km |
| D. | 1.5 sq km. |
| Answer» E. | |
| 241. |
The maximum hourly consumption, is generally taken as |
| A. | 110% |
| B. | 120% |
| C. | 130% |
| D. | 150%. |
| Answer» E. | |
| 242. |
Water may not contain much impurities if its source is |
| A. | reservoirs |
| B. | stream flowing in plains |
| C. | lakes in lower regions |
| D. | spring along hill slopes |
| Answer» E. | |
| 243. |
Hardness of water can be removed by boiling if it is due to |
| A. | calcium bicarbonates |
| B. | calcium sulphates |
| C. | calcium chloride |
| D. | calcium nitrates. |
| Answer» B. calcium sulphates | |
| 244. |
Pipes are laid parallel |
| A. | to increase the capacity of the water supply |
| B. | to provide a means of repairing without closing water supply |
| C. | to meet the requirement of excessive supply |
| D. | all the above. |
| Answer» E. | |
| 245. |
The dilution ratio at which the odour is hardly detectable is generally called threshold odour number and for public supplies it should not exceed |
| A. | 3 |
| B. | 5 |
| C. | 7 |
| D. | 9 |
| Answer» B. 5 | |
| 246. |
Underground water is obtained from |
| A. | rains |
| B. | rivers |
| C. | lakes |
| D. | springs. |
| Answer» E. | |
| 247. |
Surface water may |
| A. | contain large amount of impurities |
| B. | be contaminated by impurities |
| C. | contain disease producing bacterias |
| D. | all the above. |
| Answer» E. | |
| 248. |
A well is considered to be good if it is sunk into |
| A. | Clay |
| B. | Sand |
| C. | Coarse gravel |
| D. | Silt. |
| Answer» D. Silt. | |
| 249. |
The four major water supply distribution systems, are |
| A. | dead end, tree, grid iron and reticulation |
| B. | dead end, tree, grid iron and circular |
| C. | tree, grid iron, ring and radial |
| D. | tree, reticulation, circular and ring. |
| Answer» D. tree, reticulation, circular and ring. | |
| 250. |
The maximum permissible hardness for public supplies is |
| A. | 95 mg/litre |
| B. | 105 mg/litre |
| C. | 115 mg/litre |
| D. | 125 mg/litre |
| Answer» D. 125 mg/litre | |