Q.1
Which of the following is biodegradable waste?
  • a) Paper
  • b) Food waste
  • c) Polythene bags
  • d) Synthetic fiber
Q.2
Which of the following water treatment process is done after filtration of water?
  • a) Secondary sedimentation
  • b) Flocculation
  • c) Primary sedimentation
  • d) Disinfection
Q.3
Which of the following type of pollution is Cultural eutrophication?
  • a) Noise pollution
  • b) Thermal pollution
  • c) Soil pollution
  • d) Water pollution
Q.4
In the lower layers of atmosphere, what range of wavelengths of light is predominant?
  • a) Between 100-300 nm
  • b) Less than 100 nm
  • c) Greater than 300 nm
  • d) All wavelengths are equally present
Q.5
Which of the following radiations of the sun do greenhouse gases trap?
  • a) Infrared radiations
  • b) UV radiations
  • c) Visible radiations
  • d) All the radiations
Q.6
Which of the following air pollution control device has maximum efficiency?
  • a) Spray tower
  • b) Wet cyclonic scrubber
  • c) Dynamic precipitator
  • d) Electrostatic precipitator
Q.7
Which of the following is not a part of photochemical smog?
  • a) SPM
  • b) PAN
  • c) O3
  • d) NO2
Q.8
Which of the following device is used to prevent the clogging of sewer pipes?
  • a) Drop manhole
  • b) Storm regulators
  • c) Flushing tank
  • d) Lamp hole
Q.9
Which of the following factor does not effect the dry weather flow?
  • a) Infiltration of ground water
  • b) Population growth
  • c) Rate of water supply
  • d) Temperature conditions
Q.10
Which of the following gas is not colorless?
  • a) SO3
  • b) Pb
  • c) NO
  • d) O3
Q.11
Which of the following is an advantage of a separate water carriage system?
  • a) The more uniform character of sewage
  • b) Two sets of sewer are used
  • c) Get choked easily
  • d) Difficult to clean the sewer
Q.12
Which of the following flow is also called sanitary sewage?
  • a) Nonuniform flow
  • b) Uniform flow
  • c) Dry weather flow
  • d) Storm weather flow
Q.13
Which of the following greenhouse gas is contributed by cattle farming?
  • a) Carbon monoxide
  • b) Nitrous oxide
  • c) Methane
  • d) All of the mentioned
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