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Question
Ozone layer is depleted by ______.
Options
NO
NO2
NO3
N2O5
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Solution
Ozone layer is depleted by NO.
Explanation:
- Chlorofluorocarbons (CFCs) and nitrogen oxides (NO, NO2) are the main culprits that destroy the ozone layer.
- The following reaction occurs when ozone (O3) and nitric oxide (NO) interact in the stratosphere, causing ozone depletion:
\[\ce{NO + O_3 -> NO_2 + O_2}\] - This process lowers ozone concentration, which aids in the ozone layer's thinning.
- NO2, NO3, and N2O5 can also participate in atmospheric reactions, but NO plays the most direct role in ozone depletion.
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