Question 35Refrigeration & AC - QMED
70% to passWhich of the following refrigerants is chlorine free and safe regarding atmospheric ozone depletion?
AR-11
BR-12
CR-22
DR-134a
AI Explanation
The correct answer is D) R-134a. R-134a is a chlorine-free refrigerant that is considered safe for the ozone layer. Unlike R-11 and R-12, which contain chlorine and are known to deplete the ozone, R-134a is an ozone-friendly hydrofluorocarbon (HFC) refrigerant. R-22, another common refrigerant, does contain chlorine and is being phased out due to its ozone-depleting properties.
Related Questions
Q19:What must be done, at a minimum, before a system can legally be opened up for re... Q24:What is the correct color-coding of refrigerant recovery cylinders regardless of... Q143:The primary purpose of the liquid line strainer used in a refrigeration system i... Q18:Moisture is removed from recovered refrigerant using a recycling machine by what... Q86:Which of the listed operations will cause an automatically controlled refrigerat...
Ready to test your knowledge?
Take a Refrigeration & AC - QMED Practice ExamOfficial Resources