SkillCat EPA Universal Practice Test

Which refrigerant is used as an example of a CFC?

R134a R22 R11, R12 R410A

Correct Answer:

R11, R12

Explanation:

CFCs are chlorofluorocarbons—refrigerants that contain chlorine and fluorine bonded to carbon, with no hydrogen. This structure is why they are associated with ozone depletion. Among the options, the classic examples of CFCs are R11 and R12 (trichlorofluoromethane and dichlorodifluoromethane). The other refrigerants belong to different families: R22 is an HCFC, which has chlorine but also hydrogen, so it isn’t a true CFC; R134a and R410A are HFCs, containing fluorine and hydrogen but no chlorine, so they aren’t CFCs.

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