01 Environmental Engineering Quiz | MCQ | Practice Test
1 >>What are the methods of treatment & disposal of radioactive wastes ? ?- (A) Evaporation & chemical precipitation.
- (B) Biological methods & adsorption in ion exchange materials.
- (C) Fixing into a solid mass with cement and sinking deep in the sea.
- (D) All (a), (b) & (c).
- (A) coagulation and flocculation of colloids.
- (B) oxidation of carbonaceous matter to CO2.
- (C) nitrification or oxidation of ammonia derived from breakdown of nitrogeneous organic matter to the nitrite and eventually to the nitrate
- (D) all (a), (b) and (c).
- (A) CO
- (B) CO2
- (C) NO
- (D) hydrocarbons
- (A) 20
- (B) 40
- (C) 60
- (D) 90
- (A) respirtory ailments (e.g. bronchitis).
- (B) skin diseases (e.g. dermatities).
- (C) silicosis.
- (D) blurred vision.
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6 >>Pick out the wrong statement. ?- (A) Biological oxygen demand (B.O.D.) value of a sewerage sample is always lower than its chemical oxygen demand (C.O.D.) value.
- (B) Environmental pollution by NOx�emission is much higher by four stroke petrol engines as compared to the two stroke engines.
- (C) Temperature in stratosphere rises with increasing altitude.
- (D) The characteristic of a green house body is that it allows the long wavelength incoming solar radiation to come in but does not allow the short wavelength infra red radiation to escape out of the earth's atmosphere.
- (A) automobile exhaust.
- (B) flue gas of coal based power plant.
- (C) exhaust of nitric acid plant.
- (D) exhaust of sulphuric acid plant.
- (A) turbidity
- (B) color (Hazen)
- (C) total solids
- (D) all (a), (b) & (c)
- (A) 1 to 2
- (B) 5 to 10
- (C) 15 to 20
- (D) 25 to 30
- (A) Catalytic converter is fitted in automobiles to reduce carbon monoxide concentration in exhaust emissions.
- (B) Inhalation of pollutant carbon monoxide results in death by asphyxiation.
- (C) Sulphur dioxide is the main pollutant emitted from the exhaust of petrol driven automobiles.
- (D) Decomposition of plants containing chlorophyll is a natural source of carbon monoxide in atmosphere.
- (A) I-131
- (B) Sr-90
- (C) Au-198
- (D) Ra-226
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12 >>COD of raw municipal sewage may be in the range of about __________ mg/litre. ?- (A) 90-120
- (B) 100-120
- (C) 80-90
- (D) 90-110
- (A) 1
- (B) 10
- (C) 250
- (D) 1000
- (A) carbonate
- (B) calcium
- (C) choride
- (D) sulphate
- (A) 0.01
- (B) 0.1
- (C) 0.3
- (D) 1
- (A) oxidation
- (B) Imhoff tank
- (C) lagoon
- (D) skimming tank
- (A) Sedimentation
- (B) Skimming off
- (C) Chlorination
- (D) Biological oxidation
- (A) thermosphere
- (B) stratosphere
- (C) troposphere
- (D) mesosphere
- (A) simple filtration.
- (B) oxidation followed by settling & filtration.
- (C) chemical coagulation.
- (D) chlorination only.
- (A) ion exchange technique.
- (B) reverse osmosis.
- (C) electrolytic decomposition.
- (D) adsorption.