What is the name of the gas used in an air conditioner?
- A. Ammonia
- B. Nitrous oxide
- C. Freon
- D. CO2Educational Resources
Explanation
Freon was a common name for chlorofluorocarbon refrigerants used in air conditioners. Many Freons were phased out because they damage the ozone layer, but the historical MCQ answer remains Freon.