The main use of chlorofluorocarbons is in __________.

Question

Question

This question was previously asked in

RRB JE ECE 22 Apr 2025 Shift 1 CBT 2 Official Paper

Answer 1

The correct answer is refrigerants.

Key Points

Chlorofluorocarbons (CFCs) are primarily used as refrigerants due to their low toxicity, non-flammability, and stability.
These compounds are used in a variety of cooling systems, including air conditioners, refrigerators, and freezers.
CFCs were favored in refrigeration systems because they are efficient in heat transfer and have low boiling points.
However, their use has been greatly reduced due to their harmful effects on the ozone layer.
The Montreal Protocol, signed in 1987, aimed to phase out the production and consumption of ozone-depleting substances including CFCs.
Alternative refrigerants such as hydrochlorofluorocarbons (HCFCs) and hydrofluorocarbons (HFCs) are now commonly used.

Additional Information

Smog
- Smog is a type of severe air pollution that usually occurs in urban areas.
- It is primarily composed of ground-level ozone, particulate matter, and other pollutants.
- Smog is often caused by emissions from vehicles, industrial facilities, and other sources.
Chimneys
- Chimneys are structures designed to vent smoke and gases from buildings, typically from fireplaces, stoves, or industrial furnaces.
- They are not related to the use of CFCs.
Vehicles
- Vehicles typically use different types of coolants and refrigerants, but they are not the main application for CFCs.
- Automotive air conditioning systems initially used CFCs but have transitioned to safer alternatives due to environmental concerns.