MCQOPTIONS
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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.
| 201. |
Most suitable section of sewer in separate sewage system is |
| A. | ectangular section |
| B. | ircular section |
| C. | tandard form of egg shaped sewer |
| D. | odified egg shaped section |
| Answer» C. tandard form of egg shaped sewer | |
| 202. |
An egg shaped section of sewer |
| A. | s economical than circular section |
| B. | rovides self cleansing velocity at low discharges |
| C. | s more stable than circular section |
| D. | s easy to construct |
| Answer» C. s more stable than circular section | |
| 203. |
The water carriage system of collection of waste product |
| A. | s cheaper in initial cost than dry conservancy system |
| B. | equires treatment before disposal |
| C. | reates hygienic problem |
| D. | ll of the above |
| Answer» C. reates hygienic problem | |
| 204. |
The phenolic compounds in public water supply should not be more than |
| A. | .1 ppm |
| B. | .01 ppm |
| C. | .001 ppm |
| D. | .0001 ppm |
| Answer» D. .0001 ppm | |
| 205. |
The means of access for inspection and cleaning of sewer line is known as |
| A. | nlet |
| B. | anhole |
| C. | rop manhole |
| D. | atch basin |
| Answer» C. rop manhole | |
| 206. |
Double filtration is used |
| A. | o increase the filtration slow sand filters capacity of |
| B. | o increase the filtration rapid sand filters capacity of |
| C. | or isolated buildings like pools, hotels etc swimming |
| D. | ll of the above |
| Answer» B. o increase the filtration rapid sand filters capacity of | |
| 207. |
Septic tank is a(i) Settling tank(ii) Digestion tank(iii) Aeration tank |
| A. | nly (i) |
| B. | i) and (ii) |
| C. | i) and (iii) |
| D. | nly (iii) |
| Answer» C. i) and (iii) | |
| 208. |
The self cleansing velocity for all sewers in India is usually |
| A. | ess than 1.0 m/sec |
| B. | .0 m/sec to 1.2 m/sec |
| C. | .5 m/sec to 2.0 m/sec |
| D. | .0 m/sec to 3.5 m/sec |
| Answer» C. .5 m/sec to 2.0 m/sec | |
| 209. |
The working conditions in imhoff tanks are |
| A. | erobic only |
| B. | naerobic only |
| C. | erobic in lower compartment and anaerobic in upper compartment |
| D. | naerobic in lower compartment and aerobic in upper compartment |
| Answer» E. | |
| 210. |
The rate of filtration in slow sand filters in million litres per day per hectare is about |
| A. | 0 to 60 |
| B. | 00 to 150 |
| C. | 00 to 600 |
| D. | 400 to 1500 |
| Answer» B. 00 to 150 | |
| 211. |
Select the correct relationship between porosity (N), specific yield (y) and specific retention (R) |
| A. | = y + R |
| B. | = N + R |
| C. | = N + y |
| D. | > (N + y) |
| Answer» B. = N + R | |
| 212. |
A pipe which is installed in the house drainage to preserve the water seal of traps is called |
| A. | ent pipe |
| B. | nti-siphonage pipe |
| C. | aste pipe |
| D. | oil pipe |
| Answer» C. aste pipe | |
| 213. |
The rate of Alteration of pressure filters is |
| A. | ess than that of slow sand filters |
| B. | n between the filtration rate of slow sand filters and rapid sand filters |
| C. | reater than that of rapid sand filters |
| D. | qual to that of slow sand filters |
| Answer» D. qual to that of slow sand filters | |
| 214. |
The type of sewer which is suitable for both combined and separate system is |
| A. | ircular sewer |
| B. | gg shaped sewer |
| C. | orseshoe type sewer |
| D. | emi-elliptical sewer |
| Answer» C. orseshoe type sewer | |
| 215. |
Percentage of bacterial load that can be removed from water by the process of plain sedimentation is about |
| A. | 0 to 25 |
| B. | 0 |
| C. | 5 |
| D. | 00 |
| Answer» D. 00 | |
| 216. |
If the coli form bacteria is present in a sample of water, then the coli-form test to be conducted is(i) Presumptive coli-form test(ii) Confirmed coli-form test(iii) Completed coli-form test |
| A. | nly (i) |
| B. | oth (i) and (ii) |
| C. | oth (i) and (iii) |
| D. | ll (i), (ii) and (iii) |
| Answer» E. | |
| 217. |
If the time of concentration is 9 minutes, then the intensity of rainfall according to British Ministry of Health formula will be |
| A. | mm/hr |
| B. | 0 mm/hr |
| C. | 0 mm/hr |
| D. | 0 mm/hr |
| Answer» E. | |
| 218. |
Dissolved oxygen in streams is |
| A. | aximum at noon |
| B. | inimum at noon |
| C. | aximum at midnight |
| D. | ame throughout the day |
| Answer» B. inimum at noon | |
| 219. |
For a country like India, where rainfall is mainly confined to one season, the suitable sewerage system will be |
| A. | eparate system |
| B. | ombined system |
| C. | artially combined system |
| D. | artially separate system |
| Answer» B. ombined system | |
| 220. |
The dissolved oxygen level in natural unpolluted waters at normal temperature is found to be of the order of |
| A. | mg/liter |
| B. | 0 mg/liter |
| C. | 00 mg/liter |
| D. | 000 mg/liter |
| Answer» C. 00 mg/liter | |
| 221. |
The minimum dissolved oxygen which should always be present in water in order to save the aquatic life is |
| A. | ppm |
| B. | ppm |
| C. | 0 ppm |
| D. | 0 ppm |
| Answer» C. 0 ppm | |
| 222. |
Facultative bacteria are able to work in |
| A. | resence of oxygen only |
| B. | bsence of oxygen only |
| C. | resence as well as in absence of oxygen |
| D. | resence of water |
| Answer» D. resence of water | |
| 223. |
The pathogens can be killed by |
| A. | itrification |
| B. | hlorination |
| C. | xidation |
| D. | one of the above |
| Answer» C. xidation | |
| 224. |
For satisfactory working of a sludge digestion unit, the pH range of digested sludge should be maintained as |
| A. | .5 to 6.0 |
| B. | .5 to 8.0 |
| C. | .5 to 10.0 |
| D. | 0.5 to 12.0 |
| Answer» C. .5 to 10.0 | |
| 225. |
Sewage treatment units are designed for |
| A. | aximum flow only |
| B. | inimum flow only |
| C. | verage flow only |
| D. | aximum and minimum flow |
| Answer» D. aximum and minimum flow | |
| 226. |
__________IS_THE_SIMPLEST_EQUIPMENT_USED_FOR_COLLECTION_OF_SOLID_PARTICULATES.?$ |
| A. | Inertial separators |
| B. | Filters |
| C. | Settling chamber |
| D. | Cyclones |
| Answer» D. Cyclones | |
| 227. |
_________ is a raw material sent to and processed in a waste recycling plant.$ |
| A. | Recyclant |
| B. | Nodules |
| C. | Particulars |
| D. | Recyclate |
| Answer» E. | |
| 228. |
Pollution_cases_can_be_classified_into___________types.$ |
| A. | 4 |
| B. | 2 |
| C. | 5 |
| D. | 6 |
| Answer» C. 5 | |
| 229. |
Failures within hydrosphere in oxygen cycle can result in the development of: |
| A. | Hyperoxic zones |
| B. | Hypoxic zones |
| C. | Hydrolic zones |
| D. | Hydroxic zones |
| Answer» C. Hydrolic zones | |
| 230. |
What_are_the_main_constituents_of_the_environmental_cycles? |
| A. | Water cycle and food cycle |
| B. | Water cycle and nutrient cycle |
| C. | Nutrient cycle |
| D. | Water cycle and air cycle |
| Answer» C. Nutrient cycle | |
| 231. |
Which of the below leads to disturbance of nitrogen fixation in the soil? |
| A. | Urban waste |
| B. | Fertilizers |
| C. | Pesticides |
| D. | Industrial effluents |
| Answer» C. Pesticides | |
| 232. |
When some chemical is mixed with water, _________ is formed. |
| A. | Solution |
| B. | Floc |
| C. | Bubbles |
| D. | Foam |
| Answer» C. Bubbles | |
| 233. |
Hydrogen Peroxide is generated from: |
| A. | Photochemical smog products |
| B. | Explosive manufacturing industry |
| C. | Automobile exhausts |
| D. | Thermal power plants |
| Answer» B. Explosive manufacturing industry | |
| 234. |
In the method of trenching, the size of the trench may be: |
| A. | 12 x 5 x 2m |
| B. | 15 x 5 x 3m |
| C. | 12 x 3 x 2m |
| D. | 15 x 5 x 5m |
| Answer» D. 15 x 5 x 5m | |
| 235. |
Refuse may be of _________ types. |
| A. | 2 |
| B. | 3 |
| C. | 4 |
| D. | 5 |
| Answer» B. 3 | |
| 236. |
To test turbidity of polluted water in the field, _________ is used. |
| A. | Baylis Turbidimeter |
| B. | Jackson Turbidimeter |
| C. | Turbidity tube |
| D. | Turbidity rod |
| Answer» E. | |
| 237. |
The presence of gas in water is indicated by: |
| A. | Fizzing sound |
| B. | Foam |
| C. | Bubbles |
| D. | Colour change |
| Answer» C. Bubbles | |
| 238. |
The living environment, the biosphere consists of __________ components. |
| A. | 2 |
| B. | 4 |
| C. | 1 |
| D. | 3 |
| Answer» E. | |