Question

Green house effect is increase in temperature of earth due to

• A. High concentration of $N{O}_2$
• B. High concentration of $S{O}_2$
• C. High concentration of $C{O}_2$
• D. High concentration of CO

Answer 1

The correct option is C High concentration of $C{O}_2$

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%

Among all these gases, concentration of CO₂ is highest. It is the main greenhouse gas.

So, the correct answer is 'High concentration of CO₂'.