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162. Which of the following refrigerants is normally classified as a low-pressure refrigerant based on a relatively high boiling point?
The question asks to identify a low-pressure refrigerant with a relatively high boiling point. HFC-23 has a very low boiling point and is used in high-pressure applications, making it an incorrect choice. While the provided answer key incorrectly identifies HFC-23 as the correct answer, HCFC-123 is the refrigerant that aligns with the question's criteria.
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