| Consider the following statements |
| 1. As a greenhouse gas (GHG) methane is even more harmful than carbon dioxide |
| 2. Methane has been included in the list of six GHGs in Kyoto Protocol. 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
Correct Answer: C
Solution :
[c] The six main greenhouse gases are - ? Carbon dioxide \[(C{{O}_{2}});\] ? Methane \[(C{{H}_{4}});\] ? Nitrous oxide \[({{N}_{2}}O);\] ? Hydrofluorocarbons (HFCs); ? Perfluorocarbons (PFCs); and ? Sulphur hexafluoride \[(SF6).\] Methane \[(C{{H}_{4}})\] is the second most important greenhouse gas. \[C{{H}_{4}}\]is more potent than \[C{{O}_{2}}\] because the radiative forcing produced per molecule is greater. In addition, the infrared window is less saturated in the range of wavelengths of radiation absorbed by \[C{{H}_{4}},\] so more molecules may fill in the region,
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