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What are the chief pollutants of the atmosphere which are most likely to deplete the ozone layer?

Correct answer: C. Nitrogen oxides and fluoro-carbons

  • A. Sulphur di-oxide
  • B. Carbon di-oxide
  • C. Nitrogen oxides and fluoro-carbons
  • D. Carbon monoxide

Explanation

Fluorocarbons such as CFCs release ozone-destroying chlorine, while nitrogen oxides can also participate in catalytic ozone destruction. Sulphur dioxide, carbon dioxide and carbon monoxide are not the principal ozone-depleting pollutants listed here.

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