NEBOSH Environmental Diploma Practice Questions - NEBOSH International Diploma In Environmental Management Exam

What is the principal mechanism by which chlorofluorocarbons (CFCs) deplete the stratospheric ozone layer?

UV radiation breaks CFCs apart, releasing chlorine atoms that catalytically destroy ozone molecules CFCs absorb ozone directly and convert it to oxygen at ground level CFCs react with nitrogen oxides to form ozone-consuming acids CFCs increase stratospheric temperatures, causing thermal breakdown of ozone

Correct Answer:

UV radiation breaks CFCs apart, releasing chlorine atoms that catalytically destroy ozone molecules

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