Question:
The oxide of nitrogen responsible for depletion of ozone layer is
The oxide of nitrogen responsible for depletion of ozone layer is
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Nitric oxide \((NO)\) catalytically destroys ozone and is responsible for ozone layer depletion.
Updated On: May 7, 2026
- \(N_2O\)
- \(NO_2\)
- \(NO\)
- \(N_2O_3\)
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The Correct Option is C
Solution and Explanation
Concept:
Nitric oxide \((NO)\) acts as a catalyst in the destruction of ozone in the stratosphere.
Step 1: Ozone layer contains: \[ O_3 \] It protects the earth from harmful ultraviolet radiation.
Step 2: Nitric oxide reacts with ozone: \[ NO+O_3 \rightarrow NO_2+O_2 \]
Step 3: The \(NO_2\) formed can further react with atomic oxygen: \[ NO_2+O \rightarrow NO+O_2 \]
Step 4: Notice that \(NO\) is regenerated.
So \(NO\) acts as a catalyst and repeatedly destroys ozone. Therefore, the oxide responsible for depletion of ozone layer is: \[ \boxed{NO} \]
Step 1: Ozone layer contains: \[ O_3 \] It protects the earth from harmful ultraviolet radiation.
Step 2: Nitric oxide reacts with ozone: \[ NO+O_3 \rightarrow NO_2+O_2 \]
Step 3: The \(NO_2\) formed can further react with atomic oxygen: \[ NO_2+O \rightarrow NO+O_2 \]
Step 4: Notice that \(NO\) is regenerated.
So \(NO\) acts as a catalyst and repeatedly destroys ozone. Therefore, the oxide responsible for depletion of ozone layer is: \[ \boxed{NO} \]
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