EPA 608 EXAM NEWEST EXAM 2026 | QUESTIONS AND CORRECT
ANSWERS (VERIFIED ANSWERS) | GRADED A+ | LATETS VERSION
1. Describe the significance of type III certification in your field of study.
Type III certification is irrelevant to professional standards.
Type III certification indicates a specific level of expertise and
knowledge required for certain professional standards.
Type III certification is the lowest level of certification available.
Type III certification is only for academic purposes.
2. What state is the refrigerant in when it enters the evaporator?
Low-pressure gas
Low-pressure liquid
High-pressure liquid
High-pressure gas
3. Which of the following has the highest GWP?
R134a
R290
R717
R744
4. Describe the significance of the refrigerant's state when it exits the metering
device in a refrigeration cycle.
The refrigerant exits as a solid, which helps in thermal insulation.
The refrigerant exits as a gas, allowing for immediate condensation.
,20/03/2026, 06:32 Practice Test - results
The refrigerant exits in a plasma state, enhancing its thermal
conductivity.
The refrigerant exits the metering device as a liquid, which is crucial
for efficient heat absorption in the evaporator.
5. What does GWP stand for in the context of R-12?
Greenhouse Warming Product
Global Water Pollution
Global Warming Potential
Gas Weight Percentage
6. The presence of chlorine in the composition of a refrigerant increases the
refrigerant's
LWFCO
GWP
Price
ODP
7. This graph is based on evidence gathered in 1987 from a flight into the
Antarctic ozone hole. Why is it sometimes referred to as the "smoking gun" of
ozone depletion evidence?
The graph shows that the concentration of stratospheric ozone fell
as the concentration of stratospheric chlorine rose, helping to
establish CFCs as a cause of ozone depletion.
The graph shows some of the first evidence gathered directly from
Antarctica about the ozone hole, making it particularly valuable.
https://quizlet.com/practice-test/01374943-00f4-472d-baca-f6bf84f782a9/results 2/82
,20/03/2026, 06:32 Practice Test - results
The graph shows a direct proportionality between the concentration
of ozone and the concentration of chlorine in the stratosphere,
indicating the role of CFCs in ozone depletion.
The graph shows very little relationship between the concentration of
ozone and the concentration of chlorine in the stratosphere, leading
scientists to look for other links.
8. What does it mean for a refrigerant to be phased out, and how does it affect
a technician's ability to service equipment?
Phasing out a refrigerant means it is no longer produced or
imported, but technicians can still service equipment containing it.
Phasing out a refrigerant allows technicians to use it freely without
restrictions.
Phasing out a refrigerant means it is replaced by a more efficient
alternative, making servicing unnecessary.
Phasing out a refrigerant means it can no longer be used in any
equipment, so technicians cannot service it.
9. R-134A, R-404A, and R-410A have already begun to be phased out due to
the following:
Neither a and b
GWP
Both a and b
ODP
10. What other appliances do Section 608 regulations apply to? Select the best
answer.
Both of the above
https://quizlet.com/practice-test/01374943-00f4-472d-baca-f6bf84f782a9/results 3/82
, 20/03/2026, 06:32 Practice Test - results
None of the above
Air conditioning equipment
Commercial refrigeration equipment
11. Describe the significance of HCFCs in environmental science.
HCFCs are banned worldwide due to their high toxicity.
HCFCs are significant as they are used as refrigerants and have a
lower ozone depletion potential compared to CFCs.
HCFCs are primarily used in the production of plastics and have no
environmental impact.
HCFCs are natural gases that contribute to global warming.
12. Which penalty can be imposed on service technicians who violet Clean Air
Act provisions?
they may lose their cert
required to appear in court
they may have their equipment confiscated
fined
13. Non-flammable is a refrigerant characteristic of .
Group B3 refrigerants
Group B refrigerants
Group B2 refrigerants
Group B1 refrigerants
Group A1 refrigerants
https://quizlet.com/practice-test/01374943-00f4-472d-baca-f6bf84f782a9/results 4/82
ANSWERS (VERIFIED ANSWERS) | GRADED A+ | LATETS VERSION
1. Describe the significance of type III certification in your field of study.
Type III certification is irrelevant to professional standards.
Type III certification indicates a specific level of expertise and
knowledge required for certain professional standards.
Type III certification is the lowest level of certification available.
Type III certification is only for academic purposes.
2. What state is the refrigerant in when it enters the evaporator?
Low-pressure gas
Low-pressure liquid
High-pressure liquid
High-pressure gas
3. Which of the following has the highest GWP?
R134a
R290
R717
R744
4. Describe the significance of the refrigerant's state when it exits the metering
device in a refrigeration cycle.
The refrigerant exits as a solid, which helps in thermal insulation.
The refrigerant exits as a gas, allowing for immediate condensation.
,20/03/2026, 06:32 Practice Test - results
The refrigerant exits in a plasma state, enhancing its thermal
conductivity.
The refrigerant exits the metering device as a liquid, which is crucial
for efficient heat absorption in the evaporator.
5. What does GWP stand for in the context of R-12?
Greenhouse Warming Product
Global Water Pollution
Global Warming Potential
Gas Weight Percentage
6. The presence of chlorine in the composition of a refrigerant increases the
refrigerant's
LWFCO
GWP
Price
ODP
7. This graph is based on evidence gathered in 1987 from a flight into the
Antarctic ozone hole. Why is it sometimes referred to as the "smoking gun" of
ozone depletion evidence?
The graph shows that the concentration of stratospheric ozone fell
as the concentration of stratospheric chlorine rose, helping to
establish CFCs as a cause of ozone depletion.
The graph shows some of the first evidence gathered directly from
Antarctica about the ozone hole, making it particularly valuable.
https://quizlet.com/practice-test/01374943-00f4-472d-baca-f6bf84f782a9/results 2/82
,20/03/2026, 06:32 Practice Test - results
The graph shows a direct proportionality between the concentration
of ozone and the concentration of chlorine in the stratosphere,
indicating the role of CFCs in ozone depletion.
The graph shows very little relationship between the concentration of
ozone and the concentration of chlorine in the stratosphere, leading
scientists to look for other links.
8. What does it mean for a refrigerant to be phased out, and how does it affect
a technician's ability to service equipment?
Phasing out a refrigerant means it is no longer produced or
imported, but technicians can still service equipment containing it.
Phasing out a refrigerant allows technicians to use it freely without
restrictions.
Phasing out a refrigerant means it is replaced by a more efficient
alternative, making servicing unnecessary.
Phasing out a refrigerant means it can no longer be used in any
equipment, so technicians cannot service it.
9. R-134A, R-404A, and R-410A have already begun to be phased out due to
the following:
Neither a and b
GWP
Both a and b
ODP
10. What other appliances do Section 608 regulations apply to? Select the best
answer.
Both of the above
https://quizlet.com/practice-test/01374943-00f4-472d-baca-f6bf84f782a9/results 3/82
, 20/03/2026, 06:32 Practice Test - results
None of the above
Air conditioning equipment
Commercial refrigeration equipment
11. Describe the significance of HCFCs in environmental science.
HCFCs are banned worldwide due to their high toxicity.
HCFCs are significant as they are used as refrigerants and have a
lower ozone depletion potential compared to CFCs.
HCFCs are primarily used in the production of plastics and have no
environmental impact.
HCFCs are natural gases that contribute to global warming.
12. Which penalty can be imposed on service technicians who violet Clean Air
Act provisions?
they may lose their cert
required to appear in court
they may have their equipment confiscated
fined
13. Non-flammable is a refrigerant characteristic of .
Group B3 refrigerants
Group B refrigerants
Group B2 refrigerants
Group B1 refrigerants
Group A1 refrigerants
https://quizlet.com/practice-test/01374943-00f4-472d-baca-f6bf84f782a9/results 4/82
