EPA Practice Exam Questions with correct
Answers 2025/2026 A+ Graded 100%
Verified.
Reusable refrigerant containers under high-pressure must be hydrostatically tested how
often? - ANS- 5 Years
To process refrigerant to a level equal to new (virgin) product specifications as
determined by chemical analysis defines; - ANS- Reclaiming
The molecule found in CFCs and HCFCs that depletes ozone is: - ANS- Chlorine
How much can a person be fined per day per violation for knowingly releasing a
regulated substance that violates the Clean Air Act? - ANS- $44,539
Before shipping any used refrigerant cylinders, check that the cylinder meets what
standards: - ANS- Department of Transportation
A single chlorine atom can destroy how many ozone molecules? - ANS- 100,000
The Chlorine in CFCs and HCFCs;
-will dissolve in water.
-will not dissolve in water.
-will rain out of the atmosphere.
-is heavier than air and cannot rise to the stratosphere. - ANS- will not dissolve in water
The compressor ____________________________________
-changes a high-pressure vapor to a high-pressure liquid.
-changes a low-pressure vapor to a high-pressure vapor.
-changes a high-pressure liquid to a low-pressure liquid.
-changes a low-pressure liquid to a low-pressure vapor. - ANS- changes a low-pressure
vapor to a high-pressure vapor.
Which type of refrigerant contains no chlorine?
-HCFCs
-HCFC Blends
-HFCs
, -CFCs - ANS- HFCs
An ozone molecule contains how many oxygen atoms? - ANS- 3 oxygen atoms
The low-side test-pressure data-plate value should be used by a technician to determine
a safe pressure for: - ANS- leak testing
Which of the following refrigerants is an HFO?
-R-22
-R-134a
-R-410A
-R-1234ze - ANS- R-1234ze
Which of the following has the highest Ozone Depletion Potential?
-HFOs
-HCFCs
-HFCs
-CFCs - ANS- CFCs
A refrigerant cylinder designed to hold recovered refrigerant has a: - ANS- grey body
and yellow top.
Which ASHRAE classification means slightly flammable?
-A1
-A2L
-A3
-B1 - ANS- A2L
What is the Significant New Alternatives Policy (SNAP) Program? - ANS- EPA's program
that identifies refrigerants with lower overall risks to human health and the environment.
Which of the following refrigerant has a GWP closest to "1"? - ANS- R-1233zd
The condenser _______________________________________
-changes a high-pressure vapor to a high-pressure liquid.
-changes a low-pressure vapor to a low-pressure liquid.
-changes a high-pressure liquid to a low-pressure liquid.
-changes a low-pressure liquid to a low-pressure vapor. - ANS- changes a high-pressure
vapor to a high-pressure liquid.
Clean refrigerant for reuse by separating the oil from the refrigerant and removing
moisture from the refrigerant by passing it through one or more filter driers, is the
definition of; - ANS- Recycle
Answers 2025/2026 A+ Graded 100%
Verified.
Reusable refrigerant containers under high-pressure must be hydrostatically tested how
often? - ANS- 5 Years
To process refrigerant to a level equal to new (virgin) product specifications as
determined by chemical analysis defines; - ANS- Reclaiming
The molecule found in CFCs and HCFCs that depletes ozone is: - ANS- Chlorine
How much can a person be fined per day per violation for knowingly releasing a
regulated substance that violates the Clean Air Act? - ANS- $44,539
Before shipping any used refrigerant cylinders, check that the cylinder meets what
standards: - ANS- Department of Transportation
A single chlorine atom can destroy how many ozone molecules? - ANS- 100,000
The Chlorine in CFCs and HCFCs;
-will dissolve in water.
-will not dissolve in water.
-will rain out of the atmosphere.
-is heavier than air and cannot rise to the stratosphere. - ANS- will not dissolve in water
The compressor ____________________________________
-changes a high-pressure vapor to a high-pressure liquid.
-changes a low-pressure vapor to a high-pressure vapor.
-changes a high-pressure liquid to a low-pressure liquid.
-changes a low-pressure liquid to a low-pressure vapor. - ANS- changes a low-pressure
vapor to a high-pressure vapor.
Which type of refrigerant contains no chlorine?
-HCFCs
-HCFC Blends
-HFCs
, -CFCs - ANS- HFCs
An ozone molecule contains how many oxygen atoms? - ANS- 3 oxygen atoms
The low-side test-pressure data-plate value should be used by a technician to determine
a safe pressure for: - ANS- leak testing
Which of the following refrigerants is an HFO?
-R-22
-R-134a
-R-410A
-R-1234ze - ANS- R-1234ze
Which of the following has the highest Ozone Depletion Potential?
-HFOs
-HCFCs
-HFCs
-CFCs - ANS- CFCs
A refrigerant cylinder designed to hold recovered refrigerant has a: - ANS- grey body
and yellow top.
Which ASHRAE classification means slightly flammable?
-A1
-A2L
-A3
-B1 - ANS- A2L
What is the Significant New Alternatives Policy (SNAP) Program? - ANS- EPA's program
that identifies refrigerants with lower overall risks to human health and the environment.
Which of the following refrigerant has a GWP closest to "1"? - ANS- R-1233zd
The condenser _______________________________________
-changes a high-pressure vapor to a high-pressure liquid.
-changes a low-pressure vapor to a low-pressure liquid.
-changes a high-pressure liquid to a low-pressure liquid.
-changes a low-pressure liquid to a low-pressure vapor. - ANS- changes a high-pressure
vapor to a high-pressure liquid.
Clean refrigerant for reuse by separating the oil from the refrigerant and removing
moisture from the refrigerant by passing it through one or more filter driers, is the
definition of; - ANS- Recycle
