MEDIUMMCQ SINGLEIChO (Chemistry Olympiad)Inorganic ChemistryEnvironmental ChemistryO3, NO2 acrolein, formaldehyde and PAN

CFCs deplete the ozone layer because

A.They release Cl2 gas

B.They release chlorine free radical✓ Correct

C.They release F2 gas

D.Both (a) and (b)

Explanation

In stratosphere, CFCs get broken down by powerful UV radiations, releasing free radicals. ENVIRONMENTAL CHEMISTRY 9 UV 2 2 2 3 2 2 CF Cl (g) Cl(g)+ CF Cl(g) C(g) O (g) ClO(g) O (g) ClO(g) O(g) Cl(g)+O (g) -> -> -> The chlorine radicals are continuously regenerated and cause the breakdown of ozone. Thus CFCs are transporting agents for continuously generating chlorine radical into the stratosphere and damaging the O3 layer.

Back to Question Bank

Practice More Like This

Take chapter-wise tests, track your progress, and master Environmental Chemistry.

Start Free Practice →