Multiple choice general knowledge science & technology

CFCs (chloro-fluoro-carbons) are greenhouse gases that have caused a rise of 0.3 ºC in the global temperatures in the past century. Name the CFC that is used in refrigerators

  1. Carbon dioxide

  2. Freon

  3. Methane

  4. Ammonia
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Freon is the trade name for chlorofluorocarbons (CFCs) commonly used as refrigerants in refrigerators and air conditioning systems. Carbon dioxide, methane, and ammonia are not CFCs - methane and CO2 are greenhouse gases, while ammonia is a different refrigerant. CFCs are potent greenhouse gases due to their high global warming potential.

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