Green house gases can be arranged in 'Global Warming Potential sequence as

Options

A. `N_(2)O gt CFC gt CH_(4) gt CO_(2)`
B. `CFC gt N_(2)O gt CH_(4) gt CO_(2)`
C. `CFC gt CO_(2) gt N_(2)O gt CH_(4)`
D. `CO_(2) gt CH_(4) gt CFC gt N_(2)O`

Answer

To arrange greenhouse gases in the order of their Global Warming Potential (GWP), we need to understand the contribution of each gas to global warming. The GWP is a measure of how much heat a greenhouse gas traps in the atmosphere over a specific time period, usually 100 years, compared to carbon dioxide (CO2).

1. **Identify the Greenhouse Gases**: The greenhouse gases mentioned are:
- Nitrous Oxide (N2O)
- Chlorofluorocarbons (CFCs)
- Methane (CH4)
- Carbon Monoxide (CO)

2. **Understand their Global Warming Potentials**:
- Carbon Dioxide (CO2) is the reference gas with a GWP of 1.
- Methane (CH4) has a GWP of approximately 25 times that of CO2.
- Nitrous Oxide (N2O) has a GWP of about 298 times that of CO2.
- Chlorofluorocarbons (CFCs) have varying GWPs depending on their specific type, but they can be significantly higher than CO2, often in the thousands.
- Carbon Monoxide (CO) does not have a direct GWP as it is not a significant greenhouse gas in terms of heat trapping, but it can influence the lifetime of other greenhouse gases.

3. **Arrange the Gases by GWP**:
- CFCs (highest GWP, often thousands)
- N2O (298 times CO2)
- CH4 (25 times CO2)
- CO (minimal direct GWP)

4. **Final Sequence**: Based on the GWP values, the correct sequence from highest to lowest GWP is:
- CFCs > N2O > CH4 > CO

Thus, the arrangement of greenhouse gases in terms of their Global Warming Potential is:
**CFCs > N2O > CH4 > CO**