Arrange the following gases in ascending order of their global warming potential (GWP):
A. CO₂ B. CH₄ C. SF₆ D. CFC-11 E. N₂O Choose the correct answer from the options given below:

Correct option is B

The global warming potential (GWP) of a gas is a measure of how much heat it can trap in the atmosphere relative to CO₂, over a specific time period (usually 100 years). The gases in ascending order of GWP are:
· A. CO₂: The reference gas with a GWP of 1.
· B. CH₄ (Methane): GWP of around 25-28 over 100 years, making it more potent than CO₂.
· E. N₂O (Nitrous oxide): GWP of approximately 298, making it much more potent than CH₄.
· D. CFC-11: GWP of about 4,660, used in refrigeration, contributing significantly to global warming.
· C. SF₆ (Sulfur hexafluoride): One of the most potent greenhouse gases, with a GWP of 23,500, making it the most powerful among the listed gases.
Information booster:
1. CO₂ has the lowest GWP, serving as the reference with a GWP of 1.
2. CH₄ is a much stronger greenhouse gas than CO₂ but has a shorter atmospheric lifetime.
3. SF₆ is a synthetic gas with an extremely high GWP, used in electrical insulation and industrial applications.
4. CFCs (chlorofluorocarbons) are ozone-depleting substances but also have high global warming potential, contributing to both ozone depletion and global warming.
5. N₂O is a potent greenhouse gas emitted from agricultural activities, combustion, and industrial processes.