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