What is the correct order of global warning potential (GWP) of following atmospheric chemical species?

[1] Chlorofluru carbon (CFC)

[2] Methane (CH4)

[3] Carbon dioxide (CO2)

[4] Nitrous oxide (N20)

Choose the correct answer from the options given below:

The correct answer is C-B-D-A.

To understand the correct order of the Global Warming Potential (GWP) of the given atmospheric chemical species, let us first map each species to its corresponding letter:
[1] Chlorofluorocarbon (CFC) corresponds to A
[2] Methane (CH₄) corresponds to B
[3] Carbon dioxide (CO₂) corresponds to C
[4] Nitrous oxide (N₂O) corresponds to D

Global Warming Potential (GWP) is a measure of how much energy the emissions of 1 ton of a gas will absorb over a given period of time (typically 100 years), relative to the emissions of 1 ton of carbon dioxide (CO₂). The GWP values for the given species are compared as follows:

1. Carbon dioxide (CO₂) [C]: CO₂ is the baseline reference gas used to measure GWP. By definition, its GWP is exactly 1.

2. Methane (CH₄) [B]: Methane is a potent greenhouse gas with a relatively short lifetime in the atmosphere. Over a 100-year timescale, its GWP is approximately 28 to 36, meaning it traps significantly more heat than CO₂ per unit mass.

3. Nitrous oxide (N₂O) [D]: Nitrous oxide has an atmospheric lifetime of more than 100 years. Its GWP is approximately 265 to 298, which is much higher than that of carbon dioxide and methane.

4. Chlorofluorocarbons (CFCs) [A]: CFCs are highly efficient at trapping heat and remain in the atmosphere for a long time. Their GWP values range from several thousands to over 10,000 (for example, CFC-11 has a GWP of approximately 4,750 and CFC-12 has a GWP of approximately 10,900).

Comparing these values, the increasing order of their Global Warming Potential is:

$${\text{CO}}_2\text{ (C)}<{\text{CH}}_4\text{ (B)}<{\text{N}}_2\text{O (D)}<\text{CFC (A)}$$

This corresponds directly to the sequence C-B-D-A.