Consider the following statements:

Chlorofluorocarbons, known as ozone-depleting substances, are used.

1. in the production of plastic foams
2. in the production of tubeless tyres
3. in cleaning certain electronic components
4. as pressurizing agents in aerosol cans

Which of the statements given above is/are correct?

[UPSC Civil Services Exam – 2012 Prelims]

(a) 1, 2 and 3 only

(b) 4 only

(c) 1, 3 and 4 only

(d) 1, 2, 3 and 4

Answer: (c)        

Explanation:

• Chlorofluorocarbons (CFCs), which are classified as ozone-depleting substances, find their applications in the production of plastic foams, cleaning electronic components, and serving as pressurizing agents in aerosol cans.
• CFCs are composed of carbon, chlorine, and fluorine atoms and are harmless and non-flammable.
• They are commonly utilized as refrigerants, solvents, blowing agents for foams and packaging materials, and in the production of aerosol sprays.