which of the followingrefrigerants does the venting prohibition cover? A- CFCs and HCFCs. B- CFCs,HCFCs and HFCs. C- CFCs and natural refrigerants. D- all natural refrigerants.
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A refrigerant is a working fluid used in the refrigeration cycle of air conditioning systems and heat pumps where in most cases they undergo a repeated phase transition from a liquid to a gas and back again. Refrigerants are heavily regulated due to their toxicity, flammability and the contribution of CFC and HCFC refrigerants to ozone depletion and that of HFC refrigerants to climate change.
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d) all natural refrigerators, because there is CFCs present in all refrigerators which is harmful.
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