Which one of the following is depleting and causing thinning of ozone?
Correct answer: C. Chlorofluorocarbon
- A. Chlorine
- B. Bromine
- C. Chlorofluorocarbon
- D. Carbon
Explanation
Thinning in the ozone layer is caused by increasing concentrations of ozone-depleting chemicals - chlorofluorocarbons or CFCs (compounds with chlorine and/or fluorine attached to carbon) and to a lesser extent halons (similar compounds with bromine or iodine).
This question appeared on the UHS MDCAT 2011 paper, which you can sit online with every answer explained.
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