The breakdown of CFCs in the presence of UV rays produce _______, which is the main cause for depletion of ozone layer.

Q. Assertion (A) : Ozone depletion leads to global warming.
Reason (R) : UV rays cause destruction of the ozone layer.

Q. Ozone layer depletion is caused by
(a) PAN
(b) CO₂
(c) CFCs
(d) coal burning

Q. Assertion: Global warming is resulting in ozone layer depletion.

Reason: UV rays cause photodissociation of ozone to oxygen.

Q. Read the following statements (A - D) related to the depletion of the ozone layer by CFCs and select the correct option stating true (T) and false (F).

A. CFCs are the most damaging agents of the ozone layer.
B. Chlorine atoms are released due to the activity of UV radiation on CFCs.
C. The active chlorine converts ozone into hydrogen atoms.
D. Cl atoms are consumed in the process of degradation of ozone.

Q. Which of the following statement/s is/are correct with regard to ozone depletion:
1. The ozone hole is measured in terms of ozone concentrations, which is expressed in Dobson units.
2. The major cause for ozone depletion is the presence of CFCs in the stratosphere - CFCs are entirely man-made and not found naturally.