Question

One green house gas contributes $14\%$ to total global warming and another contributes $6\%$. These are respectively identified as

• A. $N{O}_2$ and $C{O}_2$
• B. CFC and $N_{2}O$
• C. Methane and $C{O}_2$
• D. Methane and CFCs
• E. CFCs and $C{O}_2$

Answer 1

The correct option is B CFC and $N_{2}O$

The warming of earth's surface when sun radiations are absorbed and trapped in earth's atmosphere, is called greenhouse effect. The gases responsible for green house effect are called green house gases which trap the radiations and don't let them reflect back from the earth's surface. The green house gases are Chlorofluorocarbons (CFC's), Carbon dioxide (CO₂), Methane (CH₄) and Nitrous Oxide (N₂O).

The approximate percentage of different greenhouse gases in the atmosphere is:

CFCs - 14%

CO₂ - 60%

‎CH₄ - 20%

N₂O - 6%

So, the correct answer is 'CFC and N₂O'.