Question

Pollutant likely to deplete ozone layer is?

• A. CO
• B. Nitrogen oxides
• C. Chlorofluorocarbons
• D. Both B and C

Answer 1

The correct option is D Both B and C

• Nitrous oxide is stable at ground level and breaks down when it reaches the stratosphere to form nitrogen oxides, that trigger ozone-destruction.
  
• The main cause of ozone depletion are halocarbon refrigerants, such as chlorofluorocarbons (CFCs), HCFCs, halons).
  
• So, the correct option is 'Both B and C'.