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NCERT Textbook
THE p BLOCK ELEMENTS

Class 12
Chemistry :-NCERT Solution - p Block elements

Exercise 2 Question 20 

Which aerosols deplete ozone?

Answer:

Freons or chlorofluorocarbons (CFCs) are aerosols that accelerate the depletion of ozone. In the presence of ultraviolet radiations, molecules of CFCs break down to form chlorine-free radicals that combine with ozone to form oxygen.

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