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Ozone layer is depleted by ______.

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Question

Ozone layer is depleted by ______.

Options

  • NO

  • NO2

  • NO3

  • N2O5

MCQ
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Solution

Ozone layer is depleted by NO.

Explanation:

  1. Chlorofluorocarbons (CFCs) and nitrogen oxides (NO, NO2) are the main culprits that destroy the ozone layer.
  2. The following reaction occurs when ozone (O3) and nitric oxide (NO) interact in the stratosphere, causing ozone depletion:
    \[\ce{NO + O_3 -> NO_2 + O_2}\]
  3. This process lowers ozone concentration, which aids in the ozone layer's thinning.
  4. NO2, NO3, and N2O5 can also participate in atmospheric reactions, but NO plays the most direct role in ozone depletion.
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Chapter 7: Elements of Groups 16, 17 and 18 - Exercises [Page 163]

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Balbharati Chemistry [English] Standard 12 Maharashtra State Board
Chapter 7 Elements of Groups 16, 17 and 18
Exercises | Q 1. v. | Page 163

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