question_answer

Consider the following statements

I. As a greenhouse gas (GHG) methane is even more harmful than carbon dioxide

II. Methane has been included in the list of six GHGs in Kyoto Protocol.

Which of the statements given above is/are correct?

A)  Only I             

B)  Only II

C)  Both I&II                     

D)  All the above

Correct Answer: C

Solution :

The six main greenhouse gases are - Carbon dioxide;  Methane;  Nitrous oxide;  Hydro fluorocarbons (HFCs); Perfluorocabons (PFCs); and  Sulphur hexafluoride.  Methane is the second most important greenhouse gas. is more potent than  because the radioactive forcing produced per molecule is greater. In addition, the infrared window is less saturated in the range of wavelengths of radiation absorbed by, so more molecules may fill in the region.