EPA Section 608 Universal Certification
Practice Exam Questions And Correct
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Rationales 2026 Q&A | Instant
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1. What is the primary purpose of the Clean Air Act, Section 608?
a) To regulate water pollution
b) To regulate pesticide use
c) To prevent the release of ozone-depleting substances into the
atmosphere
d) To manage hazardous waste
Rationale: Section 608 was established to control the release of
refrigerants that harm the ozone layer.
2. Which refrigerant is classified as an HCFC?
a) R-134a
,b) R-22
c) R-717
d) R-744
Rationale: R-22 is an HCFC commonly used in older air conditioning
systems.
3. Which of the following refrigerants has the highest ozone depletion
potential (ODP)?
a) R-11
b) R-123
c) R-22
d) R-410A
Rationale: R-11 (CFC) has one of the highest ODP values among
refrigerants.
4. Which type of certification is required to service high-pressure
appliances?
a) Type I
b) Type II
c) Type III
d) Core only
Rationale: Type II certification covers high-pressure appliances like
residential and commercial A/C units.
5. A Type III technician is certified to work on which systems?
a) Small appliances
,b) High-pressure systems
c) Low-pressure systems
d) Automotive systems
Rationale: Type III certification covers low-pressure chillers using
refrigerants such as R-123 or R-11.
6. What is the ozone depletion potential (ODP) of HFCs?
a) High
b) Moderate
c) Zero
d) Unknown
Rationale: HFCs contain no chlorine, so they have zero ozone depletion
potential.
7. Which refrigerant is a pure HFC blend?
a) R-22
b) R-12
c) R-134a
d) R-500
Rationale: R-134a is a single-component HFC refrigerant with no chlorine
content.
8. Which refrigerant contains chlorine?
a) R-134a
b) R-717
c) R-22
, d) R-744
Rationale: R-22 is an HCFC and contains chlorine atoms that damage the
ozone layer.
9. Which EPA-approved recovery cylinder color combination is used for
refrigerant recovery?
a) Blue and silver
b) Red and white
c) Gray body with yellow top
d) Black and green
Rationale: Recovery cylinders are color-coded gray with yellow tops for
identification.
10. What is the minimum passing score for the EPA Section 608 certification
exam?
a) 60%
b) 70%
c) 72%
d) 80%
Rationale: Each section requires a score of 72% or higher to pass.
11. What safety classification does R-410A have according to ASHRAE?
a) A1
b) B1
c) A1 (non-toxic, non-flammable)
d) B2L
Practice Exam Questions And Correct
Answers (Verified Answers) Plus
Rationales 2026 Q&A | Instant
Download Pdf
1. What is the primary purpose of the Clean Air Act, Section 608?
a) To regulate water pollution
b) To regulate pesticide use
c) To prevent the release of ozone-depleting substances into the
atmosphere
d) To manage hazardous waste
Rationale: Section 608 was established to control the release of
refrigerants that harm the ozone layer.
2. Which refrigerant is classified as an HCFC?
a) R-134a
,b) R-22
c) R-717
d) R-744
Rationale: R-22 is an HCFC commonly used in older air conditioning
systems.
3. Which of the following refrigerants has the highest ozone depletion
potential (ODP)?
a) R-11
b) R-123
c) R-22
d) R-410A
Rationale: R-11 (CFC) has one of the highest ODP values among
refrigerants.
4. Which type of certification is required to service high-pressure
appliances?
a) Type I
b) Type II
c) Type III
d) Core only
Rationale: Type II certification covers high-pressure appliances like
residential and commercial A/C units.
5. A Type III technician is certified to work on which systems?
a) Small appliances
,b) High-pressure systems
c) Low-pressure systems
d) Automotive systems
Rationale: Type III certification covers low-pressure chillers using
refrigerants such as R-123 or R-11.
6. What is the ozone depletion potential (ODP) of HFCs?
a) High
b) Moderate
c) Zero
d) Unknown
Rationale: HFCs contain no chlorine, so they have zero ozone depletion
potential.
7. Which refrigerant is a pure HFC blend?
a) R-22
b) R-12
c) R-134a
d) R-500
Rationale: R-134a is a single-component HFC refrigerant with no chlorine
content.
8. Which refrigerant contains chlorine?
a) R-134a
b) R-717
c) R-22
, d) R-744
Rationale: R-22 is an HCFC and contains chlorine atoms that damage the
ozone layer.
9. Which EPA-approved recovery cylinder color combination is used for
refrigerant recovery?
a) Blue and silver
b) Red and white
c) Gray body with yellow top
d) Black and green
Rationale: Recovery cylinders are color-coded gray with yellow tops for
identification.
10. What is the minimum passing score for the EPA Section 608 certification
exam?
a) 60%
b) 70%
c) 72%
d) 80%
Rationale: Each section requires a score of 72% or higher to pass.
11. What safety classification does R-410A have according to ASHRAE?
a) A1
b) B1
c) A1 (non-toxic, non-flammable)
d) B2L
