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The compound used in refrigeration is
1. Nitrogen
2. Liquid ammonia
3. Liquid ammonium chloride
4. Liquid fluorine
5. None of the above/More than one of the above

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Correct Answer - Option 2 : Liquid ammonia

The correct answer is Liquid ammonia.

Concept:

Refrigerator or Heat Pump:

  • refrigerator or heat pump is basically a heat engine run in the reverse direction.
  • It essentially consists of three parts
  1. Source (Atmosphere)):  At higher temperature T1.
  2. Working substance: It is called refrigerant liquid ammonia and freon works as a working substance.
  3. Sink (Contents of a refrigerator): At lower temperature T2.

Explanation:

  • As we know the Refrigerator transfers heat from a cold to a hot body at the expense of mechanical energy supplied to it by an external agent.
  • The compound used in refrigeration is NH3 or Liquid ammonia.

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