Multiple choice

Chloro-fluro-carbon gases are not used in which of the following?

  1. Aerosol sprays

  2. Fire-extinguishers

  3. Refrigerators

  4. Air-conditioning
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

CFCs (Chlorofluorocarbons) were widely used as refrigerants in refrigerators and air conditioning systems, and as propellants in aerosol sprays. However, they were never used in fire extinguishers - fire extinguishers typically use carbon dioxide, foam, dry chemical powders, or halon (before its phase-out). CFCs were phased out globally under the Montreal Protocol due to their ozone-depleting properties.

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