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McqMate
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 |
151. |
The bactericidal, virucidal and cysticidal efficiency of chlorine as a disinfectant |
A. | increases with a decrease in pH |
B. | increases with a increase in pH |
C. | decreases with a decrease in pH |
D. | decreases with an increase in pH |
E. | None of the above |
Answer» A. increases with a decrease in pH |
152. |
The air consumption of a four stroke diesel engine per rated BHP per hour will be |
A. | 1 kg |
B. | 5 to 7 kg |
C. | 10 to 14 kg |
D. | 20 kg |
E. | None of the above |
Answer» B. 5 to 7 kg |
153. |
The discharge of hydrocarbons from automobile exhaust is maximum when the vehicle is |
A. | Idling |
B. | Cruising at low speeds |
C. | Accelerating |
D. | Decelerating |
E. | Cruising at high speeds |
Answer» A. Idling |
154. |
The term BOD is associated with pollution arising out of |
A. | air |
B. | water |
C. | noise |
D. | land |
E. | None of the above |
Answer» B. water |
155. |
Lead poisoning occurs when the lead content in water is |
A. | 300 - 500 ppm |
B. | 30 - 50 ppm |
C. | 10 - 15 ppm |
D. | 3 - 5 ppm |
E. | 0.3 - 0.5 ppm |
Answer» E. 0.3 - 0.5 ppm |
156. |
Which of the following does not use ambient air for propulsion? |
A. | Turbo jet |
B. | Pulse jet |
C. | Turbo-prop |
D. | Rocket |
E. | None of the above |
Answer» D. Rocket |
157. |
Which of the following units measures the memory of the Computer? |
A. | Volts |
B. | Amperes |
C. | Ohms |
D. | Bits |
E. | None of these |
Answer» D. Bits |
158. |
A hard water may contain |
A. | Calcium carbonate |
B. | Magnesium sulphate |
C. | Magnesium bicarbonate |
D. | Any of the above |
E. | None of the above |
Answer» D. Any of the above |
159. |
Which of the following operation produces highest noise level? |
A. | welding |
B. | Riveting |
C. | Machining |
D. | Pressing |
E. | None of the above |
Answer» B. Riveting |
160. |
Water gas is a mixture of |
A. | CO and H2 |
B. | N2 and H2 |
C. | CO2 and N2 |
D. | SO2, CO2 and N2 |
E. | None of the above |
Answer» A. CO and H2 |
161. |
Which of the following gas has least proportion in atmospheric air? |
A. | Argon |
B. | Carbondioxide |
C. | Neon |
D. | Helium |
E. | None of the above |
Answer» D. Helium |
162. |
Which of the following symptom is not common between food poisoning and carbon monoxide poisoning? |
A. | Nausea |
B. | Vomiting |
C. | Headache |
D. | All of the above |
E. | None of the above |
Answer» C. Headache |
163. |
The atmosphere gets heated up mainly by |
A. | Direct sun-rays |
B. | Radiation from the earth's surface |
C. | Heat of the earth's interior |
D. | Radiogenic heat |
E. | None of these |
Answer» B. Radiation from the earth's surface |
164. |
The ratio activity of water due to Strontium can be removed by |
A. | Aeration |
B. | Alum coagulation |
C. | Phosphate coagulation |
D. | Lime |
E. | Lime - Soda solution |
Answer» C. Phosphate coagulation |
165. |
Aeration of water is done for all of the following purposes EXCEPT for |
A. | removal of bad tastes |
B. | removal of carbon dioxide |
C. | increasing the quantity of oxygen in water |
D. | removal of temporary hardness |
E. | None of the above |
Answer» D. removal of temporary hardness |
166. |
Which of the following plant is highly sensitive to mercury vapour? |
A. | Sunflower |
B. | Ivy |
C. | Aloc |
D. | Cherry |
E. | Sarcococca |
Answer» A. Sunflower |
167. |
The emission of carbon monoxide in automobile exhaust will be low when the vehicle is |
A. | Idling |
B. | Cruising at low speed |
C. | Cruising at high speed |
D. | Accelerating |
E. | Decelerating |
Answer» C. Cruising at high speed |
168. |
For removal of temporary hardness of water |
A. | Water is filtered |
B. | Water is boiled |
C. | Alum is added to water |
D. | Lime is added to water |
E. | Chlorine is passed through water |
Answer» C. Alum is added to water |
169. |
The total count of bacteria in portable water should not exceed |
A. | 10,000 per c.c. |
B. | 5000 per c.c. |
C. | 998 per c.c. |
D. | 10 per c.c. |
E. | 1 mg/litre |
Answer» D. 10 per c.c. |
170. |
The rate at which atoms of radioactive sources disintegrate is measured in terms of |
A. | Cuire |
B. | Atomic number |
C. | Wavelength |
D. | Frequency |
E. | None of the above |
Answer» A. Cuire |
171. |
BF3 counter can detect which of the following radiations? |
A. | Alpha particles |
B. | Neutrons |
C. | X-rays |
D. | Beta rays |
E. | None of the above |
Answer» B. Neutrons |
172. |
For minimal eye irritation, pH value of swimming pool water should be in the range |
A. | 6.2 to 6.8 |
B. | 6.5 to 7.0 |
C. | 7.0 to 7.2 |
D. | 7.5 to 7.6 |
E. | None of the above |
Answer» D. 7.5 to 7.6 |
173. |
Car speed of a lift is usually |
A. | 0.1 to 0.3 m/s |
B. | 0.5 to 1 m/s |
C. | 2 to 5 m/s |
D. | 7 to 10 m/s |
E. | None of the above |
Answer» B. 0.5 to 1 m/s |
174. |
A blue smoke from a diesel engine indicates presence of |
A. | Nitrous oxide |
B. | Carbon dioxide |
C. | Carbon monoxide |
D. | Unburnt oil |
E. | Unburnt carbon |
Answer» D. Unburnt oil |
175. |
Which of the following is not a constituent of coal? |
A. | Hydrogen |
B. | Nitrogen |
C. | Inorganic matter |
D. | Manganese |
E. | None of the above |
Answer» D. Manganese |
176. |
For portable water the permissible pH value is |
A. | 1 - 4.5 |
B. | 4.5 - 7 |
C. | 7 - 8.5 |
D. | 9 -- 11 |
E. | 11 -- 14 |
Answer» C. 7 - 8.5 |
177. |
The percentage of krypton in atmospheric air is around |
A. | 0.01 ppm |
B. | 0.1 ppm |
C. | 1 ppm |
D. | 10 ppm |
E. | None of the above |
Answer» C. 1 ppm |
178. |
Which of the following is the major source of environmental pollution in urban areas? |
A. | Rolling mills |
B. | Power plants |
C. | Automobiles |
D. | Floor mills |
E. | Electronic industries |
Answer» C. Automobiles |
179. |
Which of the following is considered as the noble gas? |
A. | Oxygen |
B. | Ozone |
C. | Hydrogen |
D. | Argon |
E. | None of these |
Answer» D. Argon |
180. |
Which of the following is an artificial source of energy? |
A. | Sun |
B. | Coal |
C. | Wood |
D. | Electricity |
E. | None of these |
Answer» D. Electricity |
181. |
The hardness of soft water (in ppm) is |
A. | 0 - 50 |
B. | 50 - 150 |
C. | 200 - 350 |
D. | 375 - 500 |
E. | 500 - 1000 |
Answer» A. 0 - 50 |
182. |
The cycle of life, death and decay involving organic nitrogeneous matter is called |
A. | The sulphur cycle |
B. | The nitrogen cycle |
C. | The carbon cycle |
D. | The hydrological cycle |
E. | None of the above |
Answer» B. The nitrogen cycle |
183. |
The process of removal of permanent hardness of water is |
A. | Zeolite process |
B. | Sedimentation process |
C. | Filtration process |
D. | Boiling process |
E. | Lime process |
Answer» A. Zeolite process |
184. |
Fuel which detonates easity is |
A. | Benzene |
B. | Iso-octance |
C. | n-heptane |
D. | Toulene |
E. | None of the above |
Answer» C. n-heptane |
185. |
Which of the following constituent has highest proportion in atmospheric air? |
A. | Nitrous oxide |
B. | Carbon monoxide |
C. | Helium |
D. | Neon |
E. | None of the above |
Answer» D. Neon |
186. |
Which of the following acts as ignition accelerator for C.I. engine fuels? |
A. | Acetone peroxide |
B. | Hydrogen peroxide |
C. | Aromatic compounds |
D. | n-heptane |
E. | None of the above |
Answer» A. Acetone peroxide |
187. |
Which of the following measures the heat of combustion? |
A. | Bomb's calorimeter |
B. | Thermostat |
C. | Beckmann's thermometer |
D. | Refrigerator |
E. | Green |
Answer» A. Bomb's calorimeter |
188. |
Which of the following is unlikely to be the pollutant from a sulphuric acid plant? |
A. | Sulphur dioxide |
B. | Sulphur trioxide |
C. | Acid mist |
D. | Hydrogen sulphide |
E. | All of the above |
Answer» D. Hydrogen sulphide |
189. |
For the maximum alkalinity of water, the pH value would be |
A. | Zero |
B. | 7 |
C. | 8 |
D. | 14 |
E. | 20 |
Answer» D. 14 |
190. |
Zeolite is |
A. | A naturally occurring salt |
B. | Hydread silica |
C. | Silicon carbide |
D. | Hydrated calcium silicate |
E. | Hydrated alumino-silicate |
Answer» E. Hydrated alumino-silicate |
191. |
Which of the following particles will be smallest in size? |
A. | Smog |
B. | Rain |
C. | Drizzle |
D. | Mist |
E. | Fog |
Answer» A. Smog |
192. |
Which of the following disease is associated with air pollution? |
A. | Bronchial asthma |
B. | Chronic bronchitis |
C. | Emphysema |
D. | All of the above |
E. | None of the above |
Answer» D. All of the above |
193. |
The water borne bacterial infections may cause |
A. | Typhoid fever |
B. | Dysentery |
C. | Cholera |
D. | Any of the above |
E. | None of the above |
Answer» D. Any of the above |
194. |
LPG stands for |
A. | Liquefied petroleum gas |
B. | Low pressure gas |
C. | Lubricated and purified gas |
D. | Low purity gas |
E. | None of the above |
Answer» A. Liquefied petroleum gas |
195. |
Which of the following symptoms will not show that combustion is necessarily complete? |
A. | Presence of free carbon is exhaust |
B. | Presence of carbon monoxide in exhaust |
C. | Presence of oxygen in exhaust |
D. | Presence of nitrogen in exhaust |
E. | None of the above |
Answer» D. Presence of nitrogen in exhaust |
196. |
Thiosulphate is the antidote for the poisonous effect due to |
A. | Arsenic |
B. | Lead |
C. | Mercury |
D. | Cyanide |
E. | Organic phosphorous compounds |
Answer» D. Cyanide |
197. |
Low grade fuels have |
A. | low moisture content |
B. | low ash content |
C. | low calorific value |
D. | low carbon content |
E. | None of the above |
Answer» C. low calorific value |
198. |
Curies is a measure of |
A. | biological effect of radiation which a man can sustain |
B. | the rate at which atoms of radioactive sources disintegrate |
C. | 86 ergs of energy per gram of air |
D. | ions percent in an ionised gas |
E. | None of the above |
Answer» A. biological effect of radiation which a man can sustain |
199. |
The presence of algae in water indicates that the water is |
A. | Hard |
B. | Soft |
C. | Acidic |
D. | Pune |
E. | Free from turbidity |
Answer» C. Acidic |
200. |
Electrostatic precipitators are largely used in |
A. | water treatment plants |
B. | sewage disposal plants |
C. | Thermal power plants |
D. | nuclear power plants |
E. | None of the above |
Answer» C. Thermal power plants |
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