The gas which traps heat 20 times more than that of the carbon-di-oxide is

Question

Question

This question was previously asked in

TNUSRB Finger Print SI Official Paper (Held on 23 Dec 2018)

Answer 1

The correct answer is Methane.

Key Points

Methane (CH4) is a potent greenhouse gas, capable of trapping heat in the atmosphere far more effectively than carbon dioxide (CO2).
Over a century, the global warming potential of methane is more than 25 times that of CO2, but over a 20-year period, it's more than 80 times greater.
Methane is emitted by natural processes, but also by human activities like leakage from natural gas systems and the raising of livestock.

Additional Information

Ammonia (NH3) is not considered a significant greenhouse gas.
Chlorofluorocarbons (CFCs) are potent greenhouse gases, but they are usually compared to CO2 on a different scale because they stay in the atmosphere for much longer periods.
Nitrous oxide (N2O) is also a potent greenhouse gas with a warming potential approximately 300 times that of CO2 over a century.