GEOLOGY

Detailed explanation-1: -Gaseous CFCs can deplete the ozone layer when they slowly rise into the stratosphere, are broken down by strong ultraviolet radiation, release chlorine atoms, and then react with ozone molecules. See Ozone Depleting Substance.)

Detailed explanation-2: -Ozone depletion occurs when chlorofluorocarbons (CFCs) and halons-gases formerly found in aerosol spray cans and refrigerants-are released into the atmosphere (see details below).

Detailed explanation-3: -It has been found that this protective ozone layer is getting depleted because of the presence of CFC (chlorofluorocarbon) compounds. When CFC is released into the atmosphere, they mix with atmospheric gases and reach the stratosphere. In the presence of ultraviolet rays, they are broken down to form chlorine radicals.

Detailed explanation-4: -Ozone depleting substances include: chlorofluorocarbons (CFCs) hydrochlorofluorocarbons (HCFCs) hydrobromoflurocarbons (HBFCs)

Detailed explanation-5: -a) Refrigerators and air conditioners – Refrigerants are the most common emitter of CFC. If the coolant used in refrigerators, air conditioners, cars, are not properly disposed it will leak CFCs in the atmosphere. Either the coolant will evaporate or get into the soil, contaminating both with CFC.