EPA Exam Version B32 questions and solutions

EPA Exam Version B32 questions and
solutions
How does the global warming potential of R-410A compare to that of carbon dioxide? -
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Correct Answer ✔✔ - It is thousands of times greater
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How do the global warming potentials of isobutane (R-600a), propane (R-290), and R-4414
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compare to the GWPs of HFC-134a, R-404A, and R-410A? - Correct Answer ✔✔ - they are
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significantly lower
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What are the characteristics of hydrofluoroolefins (HFOS)? - Correct Answer ✔✔ - Non-
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ozone depleting, and have a low global warming potentials
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Why are HFO refrigerants less flammable than hydrocarbon refrigerants? - Correct Answer
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✔✔ - They contain fluorine
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Which of the following refrigerants is an HFO? - Correct Answer ✔✔ - R-1234yf
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Which element in a CFC or HCFC molecule causes ozone depletion? - Correct Answer ✔✔ -
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Chlorine
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Which type of refrigerant is the most harmful to stratospheric ozone? - Correct Answer ✔✔ -
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CFC
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Which refrigerant depletes the ozone layer? - Correct Answer ✔✔ - R-22
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What evidence demonstrates that chlorine in the stratosphere is primarily from man-made
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chemicals rather than from natural sources such as volcanoes? - Correct Answer ✔✔ - all
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the listed reasons
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- The rise in the amount of chlorine measured in the stratosphere matches the rise in the
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amount of Aucrine, which has different natural sources than chlorine, over the same period.
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- The rise in the amount of chlorine measured in the stratosphere matches the rise in ODS
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emissions
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over the same period
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- Samples of air taken from the stratosphere over erupting volcanoes show that volcanoes
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contribute a small quantity of chlorine to the stratosphere compared to CFCs and MCFCs.
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What should a technician do if they lose their Section 608 certification card? - Correct Answer
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✔✔ - Request a replacement from their certifying organization.
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