Question

What will be the decreasing order of
the following which contribute to the
'Greenhouse effect'?
(A) CO2 > CH4 > CFCs > N2O
(B) CH4 > CO2 > CFCs > N2O
(C) CO2 > CFCs > CH4 > N20
(D) CO2 > CHA > N2O > CFCs​

Answer 1

Explanation:

Global warming potential (GWP) is a measure of how much heat a greenhouse gas traps in the atmosphere up to a specific time horizon, relative to carbon dioxide. It compares the amount of heat trapped by a certain mass of the gas in question to the amount of heat trapped by a similar mass of carbon dioxide and is expressed as a factor of carbon dioxide an index of global warming potential for methane, carbon monoxide, nitrous oxide and CFCs relative to that of carbon dioxide. The major contribution is from CO2 (60%),CH4 (20%), CFC and N2O attributes to 14% and 6% respectively.

So the correct answer is A '60%,20%,14%,6%'.