IAS Prelims : GS Environment and Ecology : MCQ Set 5

The candidates will find here important questions related to Environment and Ecology which will help in IAS Prelims Exam and State PCS Exams.

Updated: May 19, 2015 12:13 IST

Q.1. Which of the following Environment related Act is/are correctly mentioned?

     1. Environment Protection Act, 1986
     2. Wildlife Protection Act, 1972
     3. Water (Prevention and Control of Pollution) Act, 1981
     4. Air (Prevention and Control of Pollution) Act, 1974

a) Only (1) and (2)                    b) Only (3) and (4)
c) Only (1), (2) and (3)              d) Only (1), (2) and (4).

Answer – (a)

Q.2. Phenomena of Excessive growth of Planktonic in river bodies is caused due to:

a) Presence of large amount of fishes in the water
b) Presence of large amount of nutrients in the water
c) Presence of large amount of dead fishes in the water
d) Presence of no fishes in the water

Answer – (b)

Q.3. Which of the following elements is/are not found in polluted water in India?

  1. Mercury
  2. Cadmium
  3. Lead
  4. Copper
  5. Uranium

a) Only (1)                              b) Only (3)
c) Only (1) and (3) and (5)      d) None of the above

Answer – (d)

Q.4. Few toxic substances found in industrial waste water undergo biological magnification. In this phenomena

  a) Concentration of toxic substances increases when we move up in pyramids
  b) Concentration of toxic substances decreases when we move up in pyramids
  c) Concentration of toxic substances remains same
  d) Concentration of toxic substances first decreases, then increases.

Answer – (a)

Q.5. Which of the following is True about lakes as well as other water bodies:

  a) Young lake supports more life compared to Old Lake
  b) Young lake supports less life compared to Old Lake
  c) Support to life is similar in Young as well as Old Lake
  d) None of the above.
Answer – (b)

Explanation – Young lakes are usually cold and clear, therefore less support to life.

Q.6. Which of the following is not an in-situ conservation method?

a) National Parks
b) Wild life sanctuaries
c) Biosphere reserves
d) Zoological Parks

Answer – (d)

Q.7. Contribution of various green house gases to total global warming in decreasing order

  a) Carbon dioxide, Methane, CFCs
  b) Methane, Carbon dioxide, CFCs
  c) Carbon dioxide, CFCs, Methane
  d) Methane, CFCs, Carbon dioxide

Answer – (a)

Q.8. Which of the following phenomena is correct about ozone?

a) Good ozone is found in the Troposphere.
b) Good ozone is found in the stratosphere.
c) Bad ozone is found in the stratosphere.
d) Good ozone is found in troposphere as well as stratosphere.

Answer – (b)

Q.9. Which of the following is not true about ozone?

a) Ozone is covered under Montreal Protocol.
b) Ozone is also covered under Kyoto Protocol.
c) Montreal protocol binds countries to adopt measures to curb ozone depleting substances.
d) HFC was used to replace ozone depleting substances.

Answer – (b)

Q.10. Which of the following is/are not a cause of bio-diversity loss:

1. Habitat loss and fragmentation
2. Over exploitation
3. Alien Species invasion
4. Co-extinctions

a) Only (1), (2), (3)                b) Only (1), (3) and (4)
c) Only (1), (2) and (4)                d) All of the above.

Answer – (d)

For more IAS Prelims Questions please click here

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