Paper 1 · People, Development and Environment
UGC NET June 2024 Re-Exam (22.08.2024) Shift-I
Arrange the following gases in ascending order of their Global Warming Potential (GWP). Choose the correct answer from the options given below.
- 1. CO2
- 2. CH4
- 3. SF6
- 4. CFC-11
- 5. N2O
A1, 2, 3, 5, 4
B1, 2, 5, 4, 3 ✓ Correct
C2, 3, 1, 5, 4
D1, 5, 2, 4, 3
Correct answer: (B) 1, 2, 5, 4, 3 — The ascending order of GWP is CO2, CH4, N2O, CFC-11, SF6, so the answer is 1, 2, 5, 4, 3.
Explanation
★The ascending order of GWP is CO2, CH4, N2O, CFC-11, SF6, so the answer is 1, 2, 5, 4, 3.
★Global warming potential compares how much heat a gas traps relative to CO2.
★CO2 has the reference potential of 1, the lowest.
★Methane has a higher potential than CO2, and nitrous oxide higher still.
★CFC-11 has a much higher potential than these.
★SF6 has the highest global warming potential, giving 1, 2, 5, 4, 3.
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