The gas used in a refrigerator to cool water is

A. Nitrogen
B. Carbon dioxide
C. Methane
D. Ammonia

Check Answer

The correct answer is D) Ammonia.

The gas commonly used in a refrigerator to cool water is ammonia. Ammonia is a chemical compound made up of nitrogen and hydrogen. It is a colorless gas with a strong, pungent smell.

Ammonia is used in refrigerators because it has a low boiling point, which allows it to easily evaporate and absorb heat from its surroundings. When the ammonia gas absorbs heat, it vaporizes, or turns into a gas. As the gas expands, it cools down and absorbs more heat. This process continues until the desired temperature is reached.
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