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12th Standard Bio-Zoology English Medium Environmental Issues Reduced Syllabus Important Questions With Answer Key 2021

12th Standard

    Reg.No. :
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Biology

Time : 01:00:00 Hrs
Total Marks : 100

    Multiple Choice Questions

    15 x 1 = 15
  1. The Ozone Day is observed every year on September 16 as on this day in 1987 the ___________was signed for launching efforts to arrest the depletion of the fragile ozone layer in the stratosphere that prevents the harmful ultra-violet rays of the sun from reaching the earth. Fill the correct word in blank.

    (a)

    Montreal Protocol

    (b)

    Geneva Protocol

    (c)

    Kyoto Protocol

    (d)

    Nagoya Protocol

  2. SMOG is derived from :

    (a)

    Smoke

    (b)

    Fog

    (c)

    Both A and B

    (d)

    Only A

  3. Excess of fluoride in drinking water causes:

    (a)

    Lung disease

    (b)

    Intestinal infection

    (c)

    Fluorosis

    (d)

    None of the above

  4. Incineration is the best method to dispose ____________

    (a)

    Agricultural waste

    (b)

    Sewage

    (c)

    Medical waste

    (d)

    Oil spills

  5. The 2018 UN climate change conference was held in ___________

    (a)

    Rwanda

    (b)

    New York

    (c)

    Russia

    (d)

    Poland

  6. DB is a standard abbreviation  used for the quantitative expression of

    (a)

    The density of bacteria in a medium

    (b)

    A particular pollutant

    (c)

    The dominant bacillus in a culture

    (d)

    A certain pesticide

  7. Which one of the following expanded forms of the following acronyms is correct?

    (a)
    UNEP United Nations Environmental Policy

     

    (b)
    EPA Environmental Pollution Agency

     

    (c)
    IUCN International Union for Conservation of Nature and Natural Resources

     

    (d)
    IPCC International Penal for climate Change

     

  8. Kyoto Protocol was endorsed at

    (a)

    CoP - 3

    (b)

    CoP - 5

    (c)

    CoP - 6

    (d)

    CoP - 4

  9. Increase in the concentration of the toxicant at successive trophic levels is known as

    (a)

    Biodeterioration

    (b)

    Biotransformation

    (c)

    Biogeochemical cycling

    (d)

    Biomagnifications

  10. __________are the major causes of CO polution in large cities and towns.

    (a)

    Fossil fuels

    (b)

    Ocean

    (c)

    Deforestation

    (d)

    Automobiles

  11. ________and ________ are the major cause for acid rain.

    (a)

    Sulphur di oxide and Hydrogen peroxide

    (b)

    Hydrogen peroxide and Sulphuric acid

    (c)

    Hydrochloride and sulphur dioxide

    (d)

    Sulphur dioxide and Nitrogen .oxide

  12. Identify the correct statement indicating 4Rs of treating water.

    (a)

    Regenerate, Reduce, Reuse and Recycle

    (b)

    Refuse, Reduce, Rejenuvate and Reuse

    (c)

    Redeem, Refuse, Rejenuvate and Reduce

    (d)

    Refuse, Reduce, Rescue and Recycle.

  13. What is the name of the action plan for sustainable development framed in Rio conference in 1992?

    (a)

    Action 21

    (b)

    Declaration 21

    (c)

    Protocol 21

    (d)

    Agenda 21

  14. Statement (1): Incomplete combination of fossil fuels release CO
    Statement (2): CO is a GHG

    (a)

    Statement 1 is true, statement 2 is false

    (b)

    Statement 1 is false, statement 2 is true

    (c)

    Both Statements 1 and 2 are true

    (d)

    Both statements 1 and 2 are false

  15. Statement (1): The intensity of noise is measured in dobson (dB) unit.
    Statement (2): Noise provides immense bliss.

    (a)

    Statement 1 is true, statement 2 is false

    (b)

    Statement 1 is false, statement 2 is true

    (c)

    Both Statements 1 and 2 are tru

    (d)

    Both statements 1 and 2 are false

  16. 2 Marks

    10 x 2 = 20
  17. Discuss the causes and effects of global warming. What measures need to be taken to control global warming?

  18. What would Earth be like without the greenhouse effect?

  19. What is AQI?

  20. What is air pollution?

  21. Classify air pollutants.

  22. What are particulate matters? Give examples.

  23. Expand USEPAand MOEFCC.

  24. What are agrochemicals?

  25. Which organism is affected by colony collapse syndrome? What will be the impact?

  26. List any four adverse effect of noise.

  27. 3 Marks

    10 x 3 = 30
  28. What effect can fertilizer runoff have on an aquatic ecosystem?

  29. Discuss the role of women in protection and conservation of forests.

  30. Discuss the role of an individual to reduce environmental pollution.

  31. How does carbon monoxide affect us?

  32. What is PAN?

  33. What is ozone depletion?

  34. What is acid rain?

  35. What are the main sources of air pollution?

  36. Explain the three main sources of water pollution

  37. Write a note on organic farming.

  38. 5 Marks

    7 x 5 = 35
  39. What is the primary purpose of the Kyoto Protocol?

  40. Discuss briefly the following :
    a. Catalytic converter
    b. Greenhouse gases
    c. Ecosan

  41. Describe how deforestation might contribute to global warming

  42. How does forest conservation help to reduce air pollution?

  43. List out the effects of air pollution.

  44. How air pollution can be controlled?

  45. Recently E-Waste and plastic wastes have created dangerous effects in the environment. In order to protect the environment what will be the solution?

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