Multiple choice

Which gas is used in a fridge?

  1. Methane

  2. CO2

  3. Ammonia

  4. Hydrogen
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Ammonia (NH3) is commonly used as a refrigerant, particularly in large-scale industrial refrigeration systems and older absorption-type refrigerators, due to its excellent thermodynamic properties.

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