Multiple choice general knowledge science & technology

Which of the following gases is used for refrigeration?

  1. Chlorine

  2. CO2

  3. Ammonia

  4. H2S
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C Correct answer
Explanation

Ammonia (NH3) has thermodynamic properties that make it an effective refrigerant, including a high latent heat of vaporization. It was widely used in early refrigeration systems and is still used in industrial applications today due to its efficiency. CO2 and chlorine are not effective refrigerants, while H2S is toxic and not used for this purpose.

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