HFC refrigerants contain which of the following? (A) A) Chlorine, fluorine \& hydrogen (B) B) Hydrogen, chlorine \& carbon (C) Q) Chlorine, fluorine \& carbon (D) D) Hydrogen, fluorine \& carbon

The correct answer is: **(D) Hydrogen, fluorine & carbon** ### Explanation: HFCs stand for **HydroFluoroCarbons**, which are chemical compounds that consist exclusively of hydrogen (H), fluorine (F), and carbon (C) atoms. Unlike CFCs (ChlorofluoroCarbons) and HCFCs (HydrochlorofluoroCarbons), HFCs **do not** contain chlorine. This absence of chlorine makes HFCs less harmful to the ozone layer, which is one of the reasons they are used as alternatives in refrigeration and air conditioning systems. **Breakdown of Options:** - **(A) Chlorine, fluorine & hydrogen:** Incorrect, because HFCs do not contain chlorine. - **(B) Hydrogen, chlorine & carbon:** Incorrect, chlorine is not a component of HFCs. - **(C) Chlorine, fluorine & carbon:** Incorrect, chlorine is absent in HFCs. - **(D) Hydrogen, fluorine & carbon:** **Correct**, as these are the elements that make up HFCs.