Question

What primary application had CFCs before they were recognized as ozone-depleting substances?

Options

• Refrigeration and aerosols

• Agricultural pesticides

• Fertilizer production

• Fossil fuel extraction

Answer 1

CFCs were widely used in refrigeration systems and aerosol propellants due to their chemical stability and low toxicity. However, their stability allowed them to reach the stratosphere, where they decompose and release chlorine atoms that destroy ozone molecules.