Question

Which compounds are responsible for the depletion of the ozone layer? [2 Marks]

Answer 1

• The ozone layer is a region in the Earth’s stratosphere that contains high concentrations of ozone and protects the Earth from the harmful ultraviolet radiations of the sun.[1 Mark ]
• Chlorofluorocarbons or CFCs are the main cause of ozone layer depletion. The molecules of chlorofluorocarbons in the stratosphere are broken down by ultraviolet radiations and release chlorine atoms. These atoms react with ozone and destroy it. [1 Mark]