CBSE  /  Class 8  /  Science  /  Pollution of Air and Water

  • 1. 
    Which gas is the major pollutant of air?

  • Carbon monoxide
  • Nitrogen
  • Oxygen
  • Propane

  • 2. 
    The increase in concentration of which gas is not responsible for Global Warming?

  • Sulphur dioxide
  • Nitrogen
  • Carbon dioxide
  • Methane

  • 3. 
    In which year Ganga Action Plan was launched?

  • 1980
  • 1984
  • 1982
  • 1985

  • 4. 
    What radiations are absorbed by CO2?

  • Ultrared radiations
  • Infrared radiations
  • Ultraviolet radiations
  • None of these

  • 5. 
    Which element is present in the exhaust of automobiles?

  • Lead
  • Calcium
  • Chromium
  • Magnesium

  • 6. 
    The phenomenon of marble cancer is due to

  • soil particles
  • fog
  • CFCs
  • acid rain

  • 7. 
    The solid or liquid particles dispersed in the air are called

  • oxides
  • acids
  • hydrocarbons
  • aerosols

  • 8. 
    The type of pollution which is likely to affect Taj Mahal in Agra to a greater extent is

  • air pollution
  • soil pollution
  • water pollution
  • noise pollution

  • 9. 
    The major causes of air pollution include

  • burning of coal and petroleum
  • afforestation
  • deforestation
  • recycling of paper

  • 10. 
    Bhopal tragedy was caused due to

  • air pollution
  • emission of poisonous gas
  • water pollution
  • leakage of poisonous gas
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