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Biodiversity, Conservation and Environmental Issues — BIOLOGY STD 12 Science — Question

Maharashtra BoardEnglish MediumSTD 12 ScienceBIOLOGYBiodiversity, Conservation and Environmental Issues4 Marks
Question
There is steady concentration of ozone in the stratosphere.
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Answer

  1. Ozone is a form of oxygen which is photo$-$dissociated and is generated by absorption of short wavelength $ \text{UV}$ radiations.
  2. Both generation and dissociation of ozone is in equilibrium.
  3. This is the equation which shows these conversions.
    $O_3 \rightarrow O_2 + [O]$
    $O_2 + [O] \rightarrow \text{UV RAYS} \rightarrow O_3$
  4. Therefore, there is steady concentration of ozone in the stratosphere.

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