EPA Certification Exam Questions & Answers
1.Which Refrigerants contain the most chlorine?
Answer CFC's
2.As of what date did it become unlawful to intentionally release Class 1
and Class 2 refrigerants to the atmosphere?
Answer July 1, 1992
3.Which Refrigerants have the lowest zone depletion potential?
Answer HFC's
4.The molecule found in CFC's and HCHC's refrigerants that destroys
the ozone in the stratosphere is
Answer Chlorine
5.Stratospheric ozone consists of
Answer Three oxygen atoms
6.Stratospheric ozone depletion is a problem
Answer Global
7.The Gas in the stratosphere that protects us from ultraviolet
radiation is
1/
17
,Answer Ozone
8.Which refrigerant is a CFC?
Answer R-12
9.Which refrigerant is an HCFC?
Answer R-123 & R-22
10.Which refrigerant is an HFC?
Answer R-134a
11.Which refrigerant contains no chlorine?
Answer R-134a
12.The Molecule found in the stratosphere that indicates stratospheric
ozone depletion is taking place is
Answer Chlorine monoxide
13.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 t
the atmosphere for service
14.One time (disposable) refrigerant cylinders are used for
2/
17
, Answer Virgin refrigerant
15.The rule of thumb for refilling approved cylinders is a maximum of
percent liquid?
Answer 80%
16.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
17.A system that fails to hold a vacuum after the evacuation process
Answer May contain moisture
May have a leak
18. To recover refrigerant is to
Answer 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.
19.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
3/
17
1.Which Refrigerants contain the most chlorine?
Answer CFC's
2.As of what date did it become unlawful to intentionally release Class 1
and Class 2 refrigerants to the atmosphere?
Answer July 1, 1992
3.Which Refrigerants have the lowest zone depletion potential?
Answer HFC's
4.The molecule found in CFC's and HCHC's refrigerants that destroys
the ozone in the stratosphere is
Answer Chlorine
5.Stratospheric ozone consists of
Answer Three oxygen atoms
6.Stratospheric ozone depletion is a problem
Answer Global
7.The Gas in the stratosphere that protects us from ultraviolet
radiation is
1/
17
,Answer Ozone
8.Which refrigerant is a CFC?
Answer R-12
9.Which refrigerant is an HCFC?
Answer R-123 & R-22
10.Which refrigerant is an HFC?
Answer R-134a
11.Which refrigerant contains no chlorine?
Answer R-134a
12.The Molecule found in the stratosphere that indicates stratospheric
ozone depletion is taking place is
Answer Chlorine monoxide
13.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 t
the atmosphere for service
14.One time (disposable) refrigerant cylinders are used for
2/
17
, Answer Virgin refrigerant
15.The rule of thumb for refilling approved cylinders is a maximum of
percent liquid?
Answer 80%
16.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
17.A system that fails to hold a vacuum after the evacuation process
Answer May contain moisture
May have a leak
18. To recover refrigerant is to
Answer 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.
19.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
3/
17
