Our Environment (C10)

Write the essential function performed by ozone at the higher levels of the Earth’s atmosphere ? How is it produced ? Name the synthetic chemicals mainly responsible for the drop of amount of ozone in the atmosphere. How can the use of these chemicals be reduced ?


It shields the surface of the earth from the UV radiation from the sun.

O2 + UV → O + O

O2 + O → O3

Chemicals Responsible: Chloro Fluoro Carbons (CFC’s)

How use can be reduced?

  • Reduce the use of CFC’s by minimizing the leakage through air conditioners and refrigerators

  • Finding substitute chemicals that are ozone friendly