Q. It is estimated that out of the total global warming, the relative contribution of $CO_{2},CH_{4},CFCs$ and $N_{2}O\$are found respectively as
A) 60%, 20%, 14% and 6%
B) 6%, 14%, 20% and 60%
C) 20%, 60%, 14% and 6%
D) 20%, 14% ,60% and 6%
Explanation
The rise in concentration of green house gases resulting in increasing the global mean temperature. It is called global warming. The various green gases are $CO_{2}$ (warming effect 60%),$CH_{4}$(effect 20%),chlorofluorocarbons (effect 14%) and nitrogen oxide (effect 6%).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.