EPA CERTIFICATION EXAM 2025 WITH 100% ACCURATE
SOLUTIONS
Which Refrigerants contain the most chlorine? - ✅✅✅CORRECT -CFC's
As of what date did it become unlawful to intentionally release Class 1 and Class 2 refrigerants to the
atmosphere? - ✅✅✅CORRECT -July 1, 1992
Which Refrigerants have the lowest zone depletion potential? - ✅✅✅CORRECT -HFC's
The molecule found in CFC's and HCHC's refrigerants that destroys the ozone in the stratosphere is: -
✅✅✅CORRECT -Chlorine
Stratospheric ozone consists of: - ✅✅✅CORRECT -Three oxygen atoms
Stratospheric ozone depletion is a _________ problem: - ✅✅✅CORRECT -Global
The Gas in the stratosphere that protects us from ultraviolet radiation is: - ✅✅✅CORRECT -Ozone
Which refrigerant is a CFC? - ✅✅✅CORRECT -R-12
Which refrigerant is an HCFC? - ✅✅✅CORRECT -R-123 & R-22
Which refrigerant is an HFC? - ✅✅✅CORRECT -R-134a
Which refrigerant contains no chlorine? - ✅✅✅CORRECT -R-134a
The Molecule found in the stratosphere that indicates stratospheric ozone depletion is taking place is: -
✅✅✅CORRECT -Chlorine monoxide
, The following actions would violate the clean air act (CAA): - ✅✅✅CORRECT -Knowingly releasing
Class 1 Class 2 substances
failing to keep or falsifying required records
failing to tech the required evacuation levels before opening a systems to the atmosphere for service
One time (disposable) refrigerant cylinders are used for: - ✅✅✅CORRECT -Virgin refrigerant
The rule of thumb for refilling approved cylinders is a maximum of _____ percent liquid? -
✅✅✅CORRECT -80%
The time it takes to properly evacuate and dehydrate a system prior to charging with refrigerant is
determined by the: - ✅✅✅CORRECT -Total volume of the system
Amount of non-condensibles (moisture) in the system
Ambient Temperature
A system that fails to hold a vacuum after the evacuation process: - ✅✅✅CORRECT -May contain
moisture
May have a leak
To recover refrigerant is to: - ✅✅✅CORRECT -Remove refrigerant is any condition from a system in
either an active or passive manner, and store it in an external container without necessarily testing or
processing.
The process that reduces contaminate in used refrigerant by oil separation with single and multiple
passes through devices such as replaceable filter core driers, which reduces moisture, acidity, and
particulate matter is: - ✅✅✅CORRECT -Recycling
The synthetic lubricant used with HCFC-based ternary blends is: - ✅✅✅CORRECT -Alkyl benzene
R-134a is "drop-in" refrigerant for: - ✅✅✅CORRECT -R-134a is not a Drop-in refrigerant
SOLUTIONS
Which Refrigerants contain the most chlorine? - ✅✅✅CORRECT -CFC's
As of what date did it become unlawful to intentionally release Class 1 and Class 2 refrigerants to the
atmosphere? - ✅✅✅CORRECT -July 1, 1992
Which Refrigerants have the lowest zone depletion potential? - ✅✅✅CORRECT -HFC's
The molecule found in CFC's and HCHC's refrigerants that destroys the ozone in the stratosphere is: -
✅✅✅CORRECT -Chlorine
Stratospheric ozone consists of: - ✅✅✅CORRECT -Three oxygen atoms
Stratospheric ozone depletion is a _________ problem: - ✅✅✅CORRECT -Global
The Gas in the stratosphere that protects us from ultraviolet radiation is: - ✅✅✅CORRECT -Ozone
Which refrigerant is a CFC? - ✅✅✅CORRECT -R-12
Which refrigerant is an HCFC? - ✅✅✅CORRECT -R-123 & R-22
Which refrigerant is an HFC? - ✅✅✅CORRECT -R-134a
Which refrigerant contains no chlorine? - ✅✅✅CORRECT -R-134a
The Molecule found in the stratosphere that indicates stratospheric ozone depletion is taking place is: -
✅✅✅CORRECT -Chlorine monoxide
, The following actions would violate the clean air act (CAA): - ✅✅✅CORRECT -Knowingly releasing
Class 1 Class 2 substances
failing to keep or falsifying required records
failing to tech the required evacuation levels before opening a systems to the atmosphere for service
One time (disposable) refrigerant cylinders are used for: - ✅✅✅CORRECT -Virgin refrigerant
The rule of thumb for refilling approved cylinders is a maximum of _____ percent liquid? -
✅✅✅CORRECT -80%
The time it takes to properly evacuate and dehydrate a system prior to charging with refrigerant is
determined by the: - ✅✅✅CORRECT -Total volume of the system
Amount of non-condensibles (moisture) in the system
Ambient Temperature
A system that fails to hold a vacuum after the evacuation process: - ✅✅✅CORRECT -May contain
moisture
May have a leak
To recover refrigerant is to: - ✅✅✅CORRECT -Remove refrigerant is any condition from a system in
either an active or passive manner, and store it in an external container without necessarily testing or
processing.
The process that reduces contaminate in used refrigerant by oil separation with single and multiple
passes through devices such as replaceable filter core driers, which reduces moisture, acidity, and
particulate matter is: - ✅✅✅CORRECT -Recycling
The synthetic lubricant used with HCFC-based ternary blends is: - ✅✅✅CORRECT -Alkyl benzene
R-134a is "drop-in" refrigerant for: - ✅✅✅CORRECT -R-134a is not a Drop-in refrigerant
