Multiple choice

Which chief pollutant(s) of the atmosphere is/are most likely to deplete the ozone layer?

  1. Sulphur dioxide

  2. Nitrogen oxides and fluorocarbon

  3. Carbon dioxide

  4. Carbon monoxide
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Nitrogen oxides from high-altitude aircraft and rocket launches, along with chlorofluorocarbons and halocarbons, are the primary pollutants that catalytically destroy stratospheric ozone. These substances break down ozone molecules through complex chemical reactions.

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