Question

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

• A. Fe
• B. Carbon
• C. Oxygen
• D. Cl

Answer 1

The correct option is D Cl

• Chlorine acts as a catalyst in the degradation of ozone and the release of molecular oxygen.

The reaction occurs as follows:

$Cl+O_3\to ClO$

$ClO+O_3\to Cl+2O_2$

So, the correct answer is option D.