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Environmental Chemistry — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistryEnvironmental Chemistry2 Marks
Question
Why there is ozone depletion mainly over Antarctica?
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Answer

This is because in other parts of the stratosphere, chlorine free radicals combine away with NO or $\mathrm{CH}_4$ but in Antarctica, the compounds formed are converted back into chlorine free radicals which deplete the ozone layer.

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