EPA Certification Exam / Expert Strategies, Review of
Key Quizzes, and Practice Questions for Guaranteed
Success / Newest 2025/2026.
Which Refrigerants contain the most chlorine? - (ANSWER)CFC's
As of what date did it become unlawful to intentionally release Class 1 and Class 2
refrigerants to the atmosphere? - (ANSWER)July 1, 1992
Which Refrigerants have the lowest zone depletion potential? - (ANSWER)HFC's
The molecule found in CFC's and HCHC's refrigerants that destroys the ozone in
the stratosphere is: - (ANSWER)Chlorine
Stratospheric ozone consists of: - (ANSWER)Three oxygen atoms
Stratospheric ozone depletion is a _________ problem: - (ANSWER)Global
The Gas in the stratosphere that protects us from ultraviolet radiation is: -
(ANSWER)Ozone
Which refrigerant is a CFC? - (ANSWER)R-12
Which refrigerant is an HCFC? - (ANSWER)R-123 & R-22
, Which refrigerant is an HFC? - (ANSWER)R-134a
Which refrigerant contains no chlorine? - (ANSWER)R-134a
The Molecule found in the stratosphere that indicates stratospheric ozone
depletion is taking place is: - (ANSWER)Chlorine monoxide
The following actions would violate the clean air act (CAA): - (ANSWER)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: - (ANSWER)Virgin
refrigerant
The rule of thumb for refilling approved cylinders is a maximum of _____ percent
liquid? - (ANSWER)80%
The time it takes to properly evacuate and dehydrate a system prior to charging
with refrigerant is determined by the: - (ANSWER)Total volume of the system
Amount of non-condensibles (moisture) in the system
Ambient Temperature
Key Quizzes, and Practice Questions for Guaranteed
Success / Newest 2025/2026.
Which Refrigerants contain the most chlorine? - (ANSWER)CFC's
As of what date did it become unlawful to intentionally release Class 1 and Class 2
refrigerants to the atmosphere? - (ANSWER)July 1, 1992
Which Refrigerants have the lowest zone depletion potential? - (ANSWER)HFC's
The molecule found in CFC's and HCHC's refrigerants that destroys the ozone in
the stratosphere is: - (ANSWER)Chlorine
Stratospheric ozone consists of: - (ANSWER)Three oxygen atoms
Stratospheric ozone depletion is a _________ problem: - (ANSWER)Global
The Gas in the stratosphere that protects us from ultraviolet radiation is: -
(ANSWER)Ozone
Which refrigerant is a CFC? - (ANSWER)R-12
Which refrigerant is an HCFC? - (ANSWER)R-123 & R-22
, Which refrigerant is an HFC? - (ANSWER)R-134a
Which refrigerant contains no chlorine? - (ANSWER)R-134a
The Molecule found in the stratosphere that indicates stratospheric ozone
depletion is taking place is: - (ANSWER)Chlorine monoxide
The following actions would violate the clean air act (CAA): - (ANSWER)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: - (ANSWER)Virgin
refrigerant
The rule of thumb for refilling approved cylinders is a maximum of _____ percent
liquid? - (ANSWER)80%
The time it takes to properly evacuate and dehydrate a system prior to charging
with refrigerant is determined by the: - (ANSWER)Total volume of the system
Amount of non-condensibles (moisture) in the system
Ambient Temperature
