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Environmental Chemistry Model Question Paper

11th Standard

    Reg.No. :
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Chemistry

Time : 01:00:00 Hrs
Total Marks : 50
    5 x 1 = 5
  1. Which one of the followings affects chlorophyll?

    (a)

    SO3

    (b)

    SO2

    (c)

    CO2

    (d)

    NO2

  2. Green house gases cause

    (a)

    Increase in temperature of atmosphere

    (b)

    Prevents global warming

    (c)

    Trap UV rays

    (d)

    All the above

  3. Pick the viable pollutant among the following.

    (a)

    Smoke

    (b)

    Mould

    (c)

    Mist

    (d)

    Fumes

  4. Statement I: Photochemical smog is also known as oxidizing smog.
    Statement II: Photochemical smog .is chiefly composed of O3, PAN, etc

    (a)

    Both statement I and statement II are true and statement II explains statement I

    (b)

    Both statement I and statement If are true but statement II does not explain statement I

    (c)

    Statement Lis true but statement II is false

    (d)

    Both statement I and II are false

  5. Which causes water pollution?

    (a)

    Jet planes

    (b)

    Herbicides

    (c)

    Smoke

    (d)

    Combustion of fossils

  6. 5 x 2 = 10
  7. When does the transport of oxygen to different body cells stop?

  8. What is the tolerable limit of fluoride ions in drinking water? What happens if it exceeds 10 ppm?

  9. What are the types of air pollutants? Give examples.

  10. Define greenhouse effect

  11. Explain how industrial waste affects the soil.

  12. 5 x 3 = 15
  13. Write the impact of depletion of ozone layer on plants, human and aquatic life.

  14. How oxides of nitrogen are harmful?

  15. Write notes about great London smog.

  16. Explain how styrene is produced by traditional and greener routes?

  17. (a) Define eutrophication and pneumoconiosis.
    (b) Write differences between photochemical smog and classical smog

  18. 4 x 5 = 20
  19. Discuss the health hazards caused by particulate pollutants.

  20. What is water pollution? Give a detailed account on causes and harmful effects of water pollution.

  21. What are the effects of photochemical smog?

  22. Explain about the environmental impacts of ozone depletion.

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