Quiz  /  Environmental Chemistry Class 11 MCQ Questions With Answers

  • 1. 
    Pollution _________________________.

  • is harmful materials put into the environment
  • found in air, water, and land
  • effects plants, animals, and people
  • All of the above

  • 2. 
    Which layer of the atmosphere do we live in?

  • Troposphere
  • Stratosphere
  • Thermosphere
  • Mesosphere

  • 3. 
    Photochemical smog is also known as

  • Industrial smog
  • London smog
  • Oxidizing smog
  • Reducing smog

  • 4. 
    Which among the following is NOT a constituent of photochemical smog?

  • formaldehyde
  • acrolein
  • peroxyacetyl nitrate (PAN)
  • SO2

  • 5. 
    Chemical responsible for ozone depletion is

  • CO2
  • NO2
  • peroxyacetyl nitrate (PAN)
  • Chlorofluorocarbons (CFCs)

  • 6. 
    Gases such as water vapour and carbon dioxide that trap heat near Earth are known as...

  • Blanket gases
  • Greenhouse gases
  • Proxy gases
  • Warming gases

  • 7. 
    Which among the following is NOT a particulate pollutant?

  • Smoke
  • Smog
  • CO
  • Dust

  • 8. 
    Which of the following is NOT a greenhouse gas?

  • CO2
  • N2
  • CH4
  • H2O

  • 9. 
    Acid rain has a pH

  • less than 5.6
  • 6
  • 7
  • more than 8

  • 10. 
    Harmful ultraviolet radiation from the Sun is absorbed by

  • Clouds
  • Ozone molecules
  • Soil
  • Water

  • 11. 
    Which of the following sets of evidence supports global warming?

  • CO2 levels rising
  • Sea Levels rising
  • Glacier mass decreasing
  • All of the Above

  • 12. 
    Ozone layer is present in

  • Troposphere
  • Stratosphere
  • Mesosphere
  • Thermosphere
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