Q. Which of the following has the highest green warming potential?

[A] Carbon Dioxide

[B] Methane

[C] Nitrous Oxide

[D] Hydro Fluoro Carbons

Answer: D

Explanation: The Global Warming Potential (GWP) for a gas is a measure of the total energy that a gas absorbs over a particular period of time (usually 100 years), compared to carbon dioxide.

Source: SHANKAR IAS Environment