Reading Section

1.

which of the following are Greenhouse gases?

1. Sulfur Hexafluoride

2.Oxygen

3.Ozone

4.Perfluorocarbons (PFCs)

5.Carbon Monoxide

  • [A] 1,3,4,5
  • [B] 2,3,4
  • [C] 3,4,5
  • [D] 1,3,4

Correct Answer: D [1,3,4]

Notes:

2.

Consider the following statements

(a) Gir Forest has 891 Asiatic Lions , as per 16th Lion Census 

(b) World Lion Day is celebrated on July 10 every year

which of the following statement(s) is/are correct?

  • [A] only a
  • [B] only b
  • [C] Both a&b
  • [D] Neither a nor b

Correct Answer: A [only a]

Notes:

August 10 is celebrated annually as World Lion Day. 

3.

Consider the following statements (as per the study published in Procedeeings of the National Academy of Sciences, 2025)

(a) 39% of surface ocean iron comes from atmospheric pollution (especially from East Asia)

(b) Lower Iron concentration enhances the growth of Phytoplankton and expand the size of poor-nutrient part of the ocean.

Which of the following is/are correct?

  • [A] Only a
  • [B] only b
  • [C] Both a&b
  • [D] Neither a nor b

Correct Answer: A [Only a]

Notes:

HIGHER iron cencentration enhances the growth of Phytoplankton which depletes the nitrate content , therby expanding the size of poor-nutrient part of the ocean.

4.

Which of the following is NOT a correct consequence of Ocean Acidification?

1. Decline in the levels of Calcium Carbonate.

2. Carbon Sequestration capacity of the ocean increases.

3. The effect of Ocean Acidification causes no harm to marine habitat and coral reefs.

 

  • [A] Both 2&3
  • [B] Only 1
  • [C] Both 1 &2
  • [D] All 1, 2 & 3

Correct Answer: A [Both 2&3]

Notes:

Carbon Sequestration capacity of ocean Decreases as ocean acidification increases due to reduced Phytoplankton.

Increase in Ocean Acidification leads to habitat loss and loss in coral reefs.

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