Q40 / 180 · NEET 2018 · Botany

In the stratosphere, which of the following elements acts as a catalyst in degradation of ozone and release of molecular oxygen?

  • A
    Fe
  • Correct answer
    B
    Cl
  • C
    Carbon
  • D
    Oxygen

Solution

In the stratosphere, Cl acts as a catalyst in degradation of ozone and release of molecular oxygen. UV rays act on CFCs to release Cl atoms which speed up the degradation of the ozone. This cycle continues to hamper the ozone layer leading to its depletion.

Hence, the correct answer is option: 'B'.

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