Which one of the following contains CFC?

Question

Question

This question was previously asked in

NTPC CBT-I (Held On: 8 Jan 2021 Shift 1)

Answer 1

The correct answer is Refrigerants.

Key Points

Chlorofluorocarbons (CFCs) are gases used for a variety of purposes, including solvents, refrigerants, and aerosol sprays. They are organic chemicals and contain carbon, chlorine and fluorine.
- CFCs are used in a variety of applications due to their low toxicity, reactivity and flammability.
- Its uses include refrigerants, blowing agents, propellants in medicinal applications, and reducing solvents.
- CFCs are a group of odorless manufactured chemicals.
- Chlorofluorocarbons have a direct impact on the entire environment.
- An example of a refrigerant CFC is dichlorodifluoromethane.

Additional Information

Ozone Depletion
- Ozone depletion is the destruction of stratospheric ozone by free radicals like chlorine, bromine when they reach the upper atmosphere.
- The UV radiations break down the Chlorine molecules into Chlorine atoms. These Chlorine atoms combine with Oxygen atoms broken from Ozone molecules to form CIO molecules leaving fewer amounts of Oxygen atoms to form Ozone again.
- The causes for ozone depletion are free radicals like, chlorine and bromine which are called Ozone Depleting Substances (ODS).
- Natural processes like volcanic eruptions also contribute to ozone depletion by the release of aerosols.