Which of the following Gas has maximum contribution to enhanced greenhouse effectOptions :CFC’s

To determine which gas has the maximum contribution to the enhanced greenhouse effect, we need to compare the greenhouse potential of CFC's with other gases.

1. First, let's understand what CFC's are. CFC stands for chlorofluorocarbons, which are synthetic compounds containing carbon, chlorine, and fluorine. They were commonly used in aerosol propellants, refrigerants, and foam-blowing agents.

2. Next, we need to consider other greenhouse gases that contribute to the enhanced greenhouse effect. These include carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O), and various halogenated gases.

3. Now, let's compare the greenhouse potential of CFC's with these other gases. The greenhouse potential is a measure of how much heat a gas can trap in the atmosphere over a specific time period, usually 100 years.

4. According to scientific studies, CFC's have a much higher greenhouse potential compared to other gases. In fact, they are considered to be thousands of times more potent than carbon dioxide in terms of their ability to trap heat in the atmosphere.

5. Therefore, based on the available information, CFC's have the maximum contribution to the enhanced greenhouse effect among the options provided.

It is important to note that the use of CFC's has been phased out due to their harmful effects on the ozone layer. However, their historical emissions still contribute to the enhanced greenhouse effect.