HVAC 2020 EPA 608 CORE Type 1,2,3 questions with correct answers

What does ozone in the stratosphere above the earth consist of? ans Molecules containing 3 oxygen atoms Which of the following refrigerants has the lowest global warming potential? ans R-600a Which of the following gases is used as the baseline measurement for global warming potential? ans Carbon Dioxide Which type of refrigerant typically has the lowest global warming potential? ans HFO's What is the state of the refrigerant entering the compressor of a refrigeration system? ans Low Pressure Vapor Why are HFO refrigerants less flammable than hydrocarbon refrigerants? ans They contain Flourine What does a section 608 certification allow a technician to do? ans Purchase or handle controlled refrigerants Which type of refrigerant has the highest ozone depletion potential? ans CFC's Which of the following refrigerants contain chlorine? ans R-22