EPA Section 608 Universal Comprehensive
QUESTION Bank | Latest Practice QUESTIONs,
Verified Answers & Detailed Explanations
(2026/2027)
QUESTION 1 What international environmental agreement established
the framework for the global phase-out of ozone-depleting substances?
A. The Kyoto Protocol
B. The Montreal Protocol
C. The Paris Agreement
D. The Geneva Convention
Correct Answer: B. The Montreal Protocol
Detailed Rationale: The Montreal Protocol is an international treaty
designed to protect the ozone layer by phasing out the production and
consumption of numerous substances that are responsible for ozone
depletion, including CFCs and HCFCs.
QUESTION 2 Under Clean Air Act Section 608, what action is strictly
prohibited regarding ozone-depleting refrigerants and their substitutes
during service, maintenance, repair, or disposal?
A. Intentional venting or releasing
B. Reclaiming through certified facilities
C. Storing in approved recovery cylinders
,D. Transferring between qualified owners
Correct Answer: A. Intentional venting or releasing
Detailed Rationale: Federal law under Clean Air Act Section 608
explicitly prohibits the intentional venting or releasing of ozone-
depleting refrigerants and their substitutes (such as HFCs and HFOs)
into the atmosphere.
QUESTION 3 What federal program evaluates and lists safe alternatives
to ozone-depleting substances across various industrial and commercial
sectors?
A. The OSHA Safety Program
B. The DOT Transport Program
C. The SNAP (Significant New Alternatives Policy) program
D. The ARI Testing Program
Correct Answer: C. The SNAP (Significant New Alternatives Policy)
program
Detailed Rationale: The EPA’s SNAP program evaluates substitutes for
ozone-depleting substances to ensure they reduce overall risk to human
health and the environment compared to existing chemicals.
QUESTION 4 Which chemical refrigerant family contains hydrogen,
fluorine, and carbon atoms, features zero ozone depletion potential
(ODP), but often has a high Global Warming Potential (GWP)?
A. Chlorofluorocarbons (CFCs)
B. Hydrochlorofluorocarbons (HCFCs)
C. Hydrofluorocarbons (HFCs)
,D. Hydrocarbons (HCs)
Correct Answer: C. Hydrofluorocarbons (HFCs)
Detailed Rationale: HFCs do not contain chlorine atoms, resulting in
zero ODP, but many possess high GWP values, triggering global phase-
down initiatives under environmental laws.
QUESTION 5 What reference gas is used as the baseline for Ozone
Depletion Potential (ODP) with a standard rating of 1.0?
A. CFC-11
B. R-134a
C. Carbon dioxide
D. Helium
Correct Answer: A. CFC-11
Detailed Rationale: CFC-11 (trichlorofluoromethane) serves as the
baseline reference chemical with an ODP rating of 1.0 against which
other ozone-destroying compounds are measured.
QUESTION 6 What reference gas is used as the baseline for Global
Warming Potential (GWP) with a rating of 1?
A. Carbon dioxide (CO2)
B. CFC-11
C. Nitrogen
D. Methane
Correct Answer: A. Carbon dioxide (CO2)
, Detailed Rationale: Carbon dioxide is assigned a GWP value of 1, and all
other greenhouse gases are measured relative to it over a 100-year
time horizon.
QUESTION 7 What type of certification is required by the EPA for
technicians who maintain, service, repair, or dispose of stationary
refrigeration and air conditioning equipment?
A. EPA Section 608 Technician Certification
B. Commercial Driver's License (CDL)
C. Local Electrical Contractor License
D. State Plumbing Certification
Correct Answer: A. EPA Section 608 Technician Certification
Detailed Rationale: Anyone who maintains, services, repairs, or
disposes of equipment containing regulated refrigerants must pass an
EPA-approved Section 608 certification exam.
QUESTION 8 Under EPA regulations, what is defined as a "de minimis"
release of refrigerant?
A. A catastrophic tank rupture
B. Small, unavoidable releases that occur when connecting or
disconnecting gauge hoses or purging lines during normal service
C. Venting an entire 50-lb cylinder intentionally
D. Leaving a system valve wide open overnight
Correct Answer: B. Small, unavoidable releases that occur when
connecting or disconnecting gauge hoses or purging lines during normal
service
QUESTION Bank | Latest Practice QUESTIONs,
Verified Answers & Detailed Explanations
(2026/2027)
QUESTION 1 What international environmental agreement established
the framework for the global phase-out of ozone-depleting substances?
A. The Kyoto Protocol
B. The Montreal Protocol
C. The Paris Agreement
D. The Geneva Convention
Correct Answer: B. The Montreal Protocol
Detailed Rationale: The Montreal Protocol is an international treaty
designed to protect the ozone layer by phasing out the production and
consumption of numerous substances that are responsible for ozone
depletion, including CFCs and HCFCs.
QUESTION 2 Under Clean Air Act Section 608, what action is strictly
prohibited regarding ozone-depleting refrigerants and their substitutes
during service, maintenance, repair, or disposal?
A. Intentional venting or releasing
B. Reclaiming through certified facilities
C. Storing in approved recovery cylinders
,D. Transferring between qualified owners
Correct Answer: A. Intentional venting or releasing
Detailed Rationale: Federal law under Clean Air Act Section 608
explicitly prohibits the intentional venting or releasing of ozone-
depleting refrigerants and their substitutes (such as HFCs and HFOs)
into the atmosphere.
QUESTION 3 What federal program evaluates and lists safe alternatives
to ozone-depleting substances across various industrial and commercial
sectors?
A. The OSHA Safety Program
B. The DOT Transport Program
C. The SNAP (Significant New Alternatives Policy) program
D. The ARI Testing Program
Correct Answer: C. The SNAP (Significant New Alternatives Policy)
program
Detailed Rationale: The EPA’s SNAP program evaluates substitutes for
ozone-depleting substances to ensure they reduce overall risk to human
health and the environment compared to existing chemicals.
QUESTION 4 Which chemical refrigerant family contains hydrogen,
fluorine, and carbon atoms, features zero ozone depletion potential
(ODP), but often has a high Global Warming Potential (GWP)?
A. Chlorofluorocarbons (CFCs)
B. Hydrochlorofluorocarbons (HCFCs)
C. Hydrofluorocarbons (HFCs)
,D. Hydrocarbons (HCs)
Correct Answer: C. Hydrofluorocarbons (HFCs)
Detailed Rationale: HFCs do not contain chlorine atoms, resulting in
zero ODP, but many possess high GWP values, triggering global phase-
down initiatives under environmental laws.
QUESTION 5 What reference gas is used as the baseline for Ozone
Depletion Potential (ODP) with a standard rating of 1.0?
A. CFC-11
B. R-134a
C. Carbon dioxide
D. Helium
Correct Answer: A. CFC-11
Detailed Rationale: CFC-11 (trichlorofluoromethane) serves as the
baseline reference chemical with an ODP rating of 1.0 against which
other ozone-destroying compounds are measured.
QUESTION 6 What reference gas is used as the baseline for Global
Warming Potential (GWP) with a rating of 1?
A. Carbon dioxide (CO2)
B. CFC-11
C. Nitrogen
D. Methane
Correct Answer: A. Carbon dioxide (CO2)
, Detailed Rationale: Carbon dioxide is assigned a GWP value of 1, and all
other greenhouse gases are measured relative to it over a 100-year
time horizon.
QUESTION 7 What type of certification is required by the EPA for
technicians who maintain, service, repair, or dispose of stationary
refrigeration and air conditioning equipment?
A. EPA Section 608 Technician Certification
B. Commercial Driver's License (CDL)
C. Local Electrical Contractor License
D. State Plumbing Certification
Correct Answer: A. EPA Section 608 Technician Certification
Detailed Rationale: Anyone who maintains, services, repairs, or
disposes of equipment containing regulated refrigerants must pass an
EPA-approved Section 608 certification exam.
QUESTION 8 Under EPA regulations, what is defined as a "de minimis"
release of refrigerant?
A. A catastrophic tank rupture
B. Small, unavoidable releases that occur when connecting or
disconnecting gauge hoses or purging lines during normal service
C. Venting an entire 50-lb cylinder intentionally
D. Leaving a system valve wide open overnight
Correct Answer: B. Small, unavoidable releases that occur when
connecting or disconnecting gauge hoses or purging lines during normal
service
