What is most commonly used as the refrigerant in heat pumps?
A
Chlorofluorohydrocarbons
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B
Fluorine gas
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C
Hydrogen gas
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D
Carbon gas
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Solution
The correct option is A Chlorofluorohydrocarbons A refrigerant is generally a fluid , which undergoes state change , from liquid to gas and back again . Chlorofluorohydrocarbons are most commonly used as refrigerant in heat pumps .