McqMate
These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Civil Engineering , Mechanical Engineering .
| 101. |
All of the following give Beta and Gamma radiations EXCEPT |
| A. | Iridium 192 |
| B. | Iodine 131 |
| C. | Cobalt 60 |
| D. | Polonium 210 |
| E. | None of the above |
| Answer» D. Polonium 210 | |
| 102. |
Which of the following is pesticide? |
| A. | Endrin |
| B. | Aldrin |
| C. | Toxaphone |
| D. | DDT |
| E. | All of the above |
| Answer» E. All of the above | |
| 103. |
DDT is |
| A. | An inorganic compound |
| B. | A compound of phosphours |
| C. | A chlorinated hydrocarbon |
| D. | A naturally occurring chemical |
| E. | None of the above |
| Answer» C. A chlorinated hydrocarbon | |
| 104. |
Term REM is used for |
| A. | solar radiation |
| B. | flame photography |
| C. | radiation exposure |
| D. | none of the above |
| E. | None of the above |
| Answer» C. radiation exposure | |
| 105. |
While comparing tungsten filament lamps with fluorescent tubes, all of the following are the advantages in favour of tungsten filament lamp EXCEPT |
| A. | Longer life |
| B. | Low cost |
| C. | More brightness |
| D. | Simple installation |
| E. | None of the above |
| Answer» A. Longer life | |
| 106. |
Odours are generally expressed in terms of |
| A. | Hardness number |
| B. | Gravity number |
| C. | Index number |
| D. | Threshold number |
| E. | None of the above |
| Answer» D. Threshold number | |
| 107. |
Disinfection of water is done by |
| A. | Filtration |
| B. | Alum |
| C. | Ozone |
| D. | Heating and cooling |
| E. | Passing chlorine |
| Answer» E. Passing chlorine | |
| 108. |
Which of the following is/are renewable sources of energy? |
| A. | Fall or flow of water |
| B. | Sun |
| C. | Wood |
| D. | All of the above |
| E. | Green |
| Answer» D. All of the above | |
| 109. |
The maximum concentration of lead in drinking water should not exceed. |
| A. | 0.0005 mg/litre |
| B. | 0.005 mg/litre |
| C. | 0.05 mg/litre |
| D. | 0.5 mg/litre |
| E. | 5 mg/litre |
| Answer» C. 0.05 mg/litre | |
| 110. |
Ash content of a diesel fuel should not exceed |
| A. | 10% |
| B. | 1% |
| C. | 0.50% |
| D. | 0.01% |
| E. | None of the above |
| Answer» C. 0.50% | |
| 111. |
In power plant an electrostatic precipitators is installed between |
| A. | Forced draft fan and furnace |
| B. | Furnace and chimney |
| C. | Primary air and secondary air |
| D. | Induced draft fan and forced draft fan |
| E. | Air preheater and water treatment plant |
| Answer» B. Furnace and chimney | |
| 112. |
Which emission has generally least proportion from a diesel engine as compared to a petrol engine? |
| A. | Oxides of nitrogen |
| B. | Hydrocarbons |
| C. | Carbon monoxide |
| D. | All of the above |
| E. | None of the above |
| Answer» A. Oxides of nitrogen | |
| 113. |
Which of the following turbidimeter gives direct readings in ppm |
| A. | Jackson turbidimeter |
| B. | Hellige turbidimeter |
| C. | Baylis turbidimeter |
| D. | All of the above |
| E. | None of the above |
| Answer» A. Jackson turbidimeter | |
| 114. |
Which of the following gas can be analysed by chemiluminescence? |
| A. | Ozone |
| B. | Carbon dioxide |
| C. | Nitrogen |
| D. | All of the above |
| E. | None of the above |
| Answer» A. Ozone | |
| 115. |
Permissible noise level in small conference room is |
| A. | 10 to 15 dB |
| B. | 15 to 25 dB |
| C. | 35 to 40 dB |
| D. | 55 to 60 dB |
| E. | None of the above |
| Answer» C. 35 to 40 dB | |
| 116. |
The aeration of water is done for the removal of |
| A. | Colour |
| B. | Turbidity |
| C. | Bacteria |
| D. | Odour |
| E. | Hardness |
| Answer» D. Odour | |
| 117. |
The method used for the removal of fine suspended particle is |
| A. | Filtration |
| B. | Agitation |
| C. | Flotation |
| D. | Aeration |
| E. | Screening |
| Answer» A. Filtration | |
| 118. |
Which organisms cause infections diseases? |
| A. | Viruses |
| B. | Worms |
| C. | Protozoa |
| D. | Fungi |
| E. | All of the above |
| Answer» E. All of the above | |
| 119. |
Alum increases |
| A. | Hardness of water |
| B. | Carbonates of water |
| C. | Sulphates in water |
| D. | Acidity of water |
| E. | None of the above |
| Answer» D. Acidity of water | |
| 120. |
Which of the following industry will usually have the highest concumption of water for processing? |
| A. | Foundry |
| B. | Steel plant |
| C. | Automobile industry |
| D. | Paper mill |
| E. | Aluminium industry |
| Answer» D. Paper mill | |
| 121. |
Electrodialysis is the process of removal of |
| A. | soluble gases in water |
| B. | dissolved solids in water |
| C. | suspended solids in water |
| D. | none of the above |
| E. | None of the above |
| Answer» B. dissolved solids in water | |
| 122. |
The presence of fluorides in drinking water helps in |
| A. | Purification of water |
| B. | Preventing decaying of teeth |
| C. | Deodourisation of water |
| D. | Reduces fungi formation |
| E. | Killing aerobic bacteria |
| Answer» B. Preventing decaying of teeth | |
| 123. |
Which radio nuclide has the least half life period? |
| A. | Carbon 14 |
| B. | Iodine 131 |
| C. | Radium |
| D. | Hydrogen 3 |
| E. | None of the above |
| Answer» B. Iodine 131 | |
| 124. |
Identify the incorrect statement if any |
| A. | If the pH value of water is 14 the water has maximum alkalinity |
| B. | pH value of 6 represents acidic water |
| C. | Water having pH value 4 will be more acidic than water having pH value of 6 |
| D. | Maximum acidity of water is indicated by pH value of zero |
| E. | None of the above |
| Answer» D. Maximum acidity of water is indicated by pH value of zero | |
| 125. |
The science of poisons - their effects, antidotes and detection, is known as |
| A. | Toxicology |
| B. | Minerology |
| C. | Petrology |
| D. | Poisonology |
| E. | Hermetilogy |
| Answer» A. Toxicology | |
| 126. |
Which of the following can have octane rating of more than 100? |
| A. | Gobar gas |
| B. | Methyl alcohol |
| C. | Benzol |
| D. | Ethyl alcohol |
| E. | None of the above |
| Answer» C. Benzol | |
| 127. |
Which thermometer is used to indicate the lowest temperature? |
| A. | Clinical thermometer |
| B. | Alcohol thermometer |
| C. | Resistance thermometer |
| D. | Liquid thermometer |
| E. | Green |
| Answer» B. Alcohol thermometer | |
| 128. |
In the jet propulsion, efficiency of the propulstion depends upon |
| A. | The speed of the vehicle |
| B. | Height at which the vehicle is travelling |
| C. | Density of the medium in which the vehicle is travelling |
| D. | All of the above |
| E. | Green |
| Answer» C. Density of the medium in which the vehicle is travelling | |
| 129. |
The speed of sound in air is |
| A. | 144 m/s |
| B. | 344 m/s |
| C. | 1344 m/s |
| D. | 3344 m/s |
| E. | None of the above |
| Answer» B. 344 m/s | |
| 130. |
Which of the following shading device will transmit least leat inside a room? |
| A. | Plain glass sheet 3 mm thick |
| B. | Plain glass sheet with wire mesh outside |
| C. | Plain glass sheet with Venetion blind inside |
| D. | Plain glass with curtain inside |
| E. | None of the above |
| Answer» D. Plain glass with curtain inside | |
| 131. |
All of the following pollutants are produced as a result of decaying organic matter EXCEPT |
| A. | Ammonia |
| B. | Sulphur dioxide |
| C. | Methane |
| D. | Hydrogen sulphide |
| E. | None of the above |
| Answer» B. Sulphur dioxide | |
| 132. |
Half life period for carbon 14 is nearly |
| A. | 1.2 days |
| B. | 5.73 days |
| C. | 5.73 years |
| D. | 5730 days |
| E. | None of the above |
| Answer» D. 5730 days | |
| 133. |
The unit parts per million is identical to |
| A. | Grains per galleon |
| B. | Pounds per cubic foot |
| C. | Milligrams per kg |
| D. | Tonnes peracre foot |
| E. | None of the above |
| Answer» C. Milligrams per kg | |
| 134. |
Which fuel will have least air consumption per kg of fuel during consumption? |
| A. | Gasoline |
| B. | Benzol |
| C. | Spirit |
| D. | Lubricating oil |
| E. | None of the above |
| Answer» C. Spirit | |
| 135. |
The desirable temperature inside an air conditioned auditorium is |
| A. | 0?C |
| B. | 5?C |
| C. | 10?C |
| D. | 20?C |
| E. | None of the above |
| Answer» D. 20?C | |
| 136. |
One kg of octane is burnt by four alternative processes given below. In which case the work available will be maximum |
| A. | When burnt in an open pan in atmosphere |
| B. | When burnt in an internal combustion engine |
| C. | When burnt in a fuel cell |
| D. | When burnt in a reversible process |
| E. | None of the above |
| Answer» D. When burnt in a reversible process | |
| 137. |
Which of the following is a cold cathode lamp? |
| A. | Sodium vapour lamp |
| B. | High pressure mercury vapour lamp |
| C. | Low pressure mercury vapour lamp |
| D. | Neon lamp |
| E. | None of the above |
| Answer» D. Neon lamp | |
| 138. |
Corrosive action of water could be due to its |
| A. | alkalinity |
| B. | hardness |
| C. | dissolved oxygen |
| D. | Any of the above |
| E. | None of the above |
| Answer» D. Any of the above | |
| 139. |
The anitdote for the poisonous effects due to mercury, is |
| A. | Vitamin K |
| B. | BAL |
| C. | Thiosulphate |
| D. | Altropine |
| E. | Any of the above |
| Answer» B. BAL | |
| 140. |
The speed of sound through human body is around |
| A. | 344 m/s |
| B. | 688 m/s |
| C. | 1560 m/s |
| D. | 3120 m/s |
| E. | None of the above |
| Answer» C. 1560 m/s | |
| 141. |
A fuel of octane rating 85 matches the antiknock qualities of a mixture consisting of |
| A. | 85% petrol + 15% diesel |
| B. | 15% petrol + 85% diesel |
| C. | 85% benzene + 15% methyl chloride |
| D. | 85% octane + 15% heptane |
| E. | None of the above |
| Answer» D. 85% octane + 15% heptane | |
| 142. |
For controlling the growth of algae, the chemical generally used is |
| A. | Alum |
| B. | Lime |
| C. | Bleaching powder |
| D. | Copper sulphate |
| E. | Ozone |
| Answer» D. Copper sulphate | |
| 143. |
Out of the following metals the least permissible percentage in drinking water is |
| A. | Chromium |
| B. | Copper |
| C. | Zinc |
| D. | Lead |
| E. | None of the above |
| Answer» A. Chromium | |
| 144. |
The first aid for a victim of electric shock is |
| A. | bandage |
| B. | sprinkling of water on the face |
| C. | glass of milk and cold water |
| D. | artificial respiration |
| E. | None of the above |
| Answer» D. artificial respiration | |
| 145. |
Prechlorination |
| A. | Improves coagulation |
| B. | Reduces odours |
| C. | Reduces organisms |
| D. | All of the above |
| E. | None of the above |
| Answer» E. None of the above | |
| 146. |
Which of the following engines uses two fuels simulataneously? |
| A. | Multifuel engine |
| B. | Wankel engines |
| C. | Free piston gas generator |
| D. | Dual fuel engines |
| E. | None of the above |
| Answer» D. Dual fuel engines | |
| 147. |
On board ships, the source of drinking water may be |
| A. | Rain water |
| B. | Sea water |
| C. | Desalted sea water |
| D. | Pumped deep sea water |
| E. | Any of the above |
| Answer» C. Desalted sea water | |
| 148. |
Which pollutants result from automobile exhaust? |
| A. | Carbon monoxide |
| B. | Nitrous oxide |
| C. | Hydrocarbons |
| D. | Sulphur dioxide |
| E. | All of the above |
| Answer» E. All of the above | |
| 149. |
The flouride content in the drinking water should not exceed |
| A. | 200 mg/litre |
| B. | 150 mg/litre |
| C. | 100 mg/litre50 mg/litre |
| D. | 50 mg/litre |
| E. | 1 mg/litre |
| Answer» E. 1 mg/litre | |
| 150. |
How many kg of air will contain one kg of oxygen? |
| A. | 1 kg |
| B. | 4.35 kg |
| C. | 8.70 kg |
| D. | 12.5 kg |
| E. | None of the above |
| Answer» B. 4.35 kg | |
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