Practice Exam Questions And Correct

EPA Section 608 Universal Certification Practice Exam Questions And Correct Answers (Verified Answers) Plus Rationales 2026 Q&A | Instant Download Pdf

• 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.

• Which refrigerant is classified as an HCFC?

a) R-134a 1 / 4

b) R-22

c) R-717

d) R-744

Rationale: R-22 is an HCFC commonly used in older air conditioning

systems.

• 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.

• 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.

• A Type III technician is certified to work on which systems?

a) Small appliances 2 / 4

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.

• 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.

• 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.

• Which refrigerant contains chlorine?

a) R-134a

b) R-717

c) R-22 3 / 4

d) R-744

Rationale: R-22 is an HCFC and contains chlorine atoms that damage the

ozone layer.

• 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.

• What is the minimum passing score for the EPA Section 608 certification

exam?

• 60%
• 70%
• 72%
• 80%

Rationale: Each section requires a score of 72% or higher to pass.

• What safety classification does R-410A have according to ASHRAE?

a) A1

b) B1

c) A1 (non-toxic, non-flammable)

d) B2L

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