Prelims MCQs Quiz 28 : Environment


1. Methane (CH4) is one of the six greenhouse gases under the Kyoto protocol. Which of the following is/are sources of methane?
1. combustion of fossil fuels
2. wetlands
3. automobiles
Select the correct answer using the codes given below.
a) 1 and 2 only
b) 1 and 3 only
c) 2 and 3 only
d) 1, 2 and 3

Answer & Explanation

2. Which of these pairs are correctly matched ?
1. Minamata convention : mercury
2. Stockholm convention : persistant organic pollutants
3. Basel convention : lead
Select the correct answer using the codes given below.
a) 1 and 2 only
b) 1 and 3 only
c) 2 and 3 only
d) 1,2 and 3

Answer & Explanation

3. In context of environment, the term “dirty dozen” refers to
a) 12 most harmful greenhouse gases
b) 12 ozone depleting substances
c) 12 persistent organic pollutants
d) none of the above

Answer & Explanation

4. A biofertilizer helps in increasing the supply of primary nutrients to plants. Which of the following is/are examples of biofertilizers?
1. Azotobacter
2. Rhizobium
3. Azospirillium
Select the correct answer using the codes given below.
a) 1 and 2 only
b) 1 and 3 only
c) 2 and 3 only
d) 1, 2 and 3

Answer & Explanation

5. Some regions are marked as ‘biodiversity hotspots’ on account of their endemism and threat. Which of the followng regions in India is/are a biodiversity hotspot?
1. western ghats
2. eastern ghats
3. eastern himalayas
4. western himalays
Select the correct answer using the codes given below.
a) 1 and 2 only
b) 1 and 3 only
c) 1, 2 and 3 only
d) 2 and 4 only

Answer & Explanation

6. Atmospheric nitrogen can undergo nitrogen fixation by
1. cynabacteria
2. lightning
3. ultraviolet rays
Select the correct answer using the codes given below.
a) 1 only
b) 1 and 2 only
c) 1 and 3 only
d) 1, 2 and 3

Answer & Explanation

7. Consider the following statements :
1. No human activity is allowed inside tiger reserves.
2. Tourism is allowed in national parks.
Which of the statements given above is/are correct ?
a) 1 only
b) 2 only
c) Both 1 and 2
d) Neither 1 nor 2

Answer & Explanation

8. With reference to oil spills, consider the following statements :
1. They make the water deficient in oxygen.
2. They can cause algal blooms.
Which of the statements given above is/are correct ?
a) 1 only
b) 2 only
c) Both 1 and 2
d) Neither 1 nor 2

Answer & Explanation

9. The Wildlife Protection Act, 1972 provides for various categories of protected areas. These include:
1. National parks
2. Wildlife sanctuaries
3. Biosphere reserve
4. Tiger reserves
Select the correct answer using the codes given below.
a) 1 and 2 only
b) 1 and 3 only
c) 2 and 3 only
d) 1, 2 and 4 only

Answer & Explanation

10. Increased level of carbon dioxide in the atmosphere would impact the plants in many ways. These can be:
1. decrease in photosynthetic productivity of plants.
2. Proliferation of weeds.
3. Increase in number of insects and other pests.
Select the correct answer using the codes given below.
a) 1 and 2 only
b) 1 and 3 only
c) 2 and 3 only
d) 1, 2 and 3

Answer & Explanation

 

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Please read these important articles about prelims preparation

1. How UPSC asks current affairs in GS Prelims

2. How to practice prelims MCQs for UPSC

3. Applying logic in UPSC General Studies Prelims

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