2024 EPA CERTIFICATION EXAM (2 VERSIONS)
QUESTIONS & CORRECT ANSWERS GRADED A
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
A system that fails to hold a vacuum after the evacuation process: - ANSWER-
May contain moisture
May have a leak
, 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.
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: - ANSWER-Recycling
The synthetic lubricant used with HCFC-based ternary blends is: - ANSWER-
Alkyl benzene
R-134a is "drop-in" refrigerant for: - ANSWER-R-134a is not a Drop-in refrigerant
The refrigerant condition and state entering the condenser of an air conditioner is a:
- ANSWER-Superheated Vapor
The condition and state entering the condenser of an air conditioner is a: -
ANSWER-Subcooled liquid
The component of an air conditioning system that changes a low pressure vapor to
a high pressure vapor is the: - ANSWER-Compressor
Refrigerant cylinders should be shipped - ANSWER-In the vertical upright
position
For the maintenance, service or repair of small appliances, recovery equipment
manufactured after ________ must be certified by an EPA approved organization?
- ANSWER-November 15, 1993
QUESTIONS & CORRECT ANSWERS GRADED A
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
A system that fails to hold a vacuum after the evacuation process: - ANSWER-
May contain moisture
May have a leak
, 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.
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: - ANSWER-Recycling
The synthetic lubricant used with HCFC-based ternary blends is: - ANSWER-
Alkyl benzene
R-134a is "drop-in" refrigerant for: - ANSWER-R-134a is not a Drop-in refrigerant
The refrigerant condition and state entering the condenser of an air conditioner is a:
- ANSWER-Superheated Vapor
The condition and state entering the condenser of an air conditioner is a: -
ANSWER-Subcooled liquid
The component of an air conditioning system that changes a low pressure vapor to
a high pressure vapor is the: - ANSWER-Compressor
Refrigerant cylinders should be shipped - ANSWER-In the vertical upright
position
For the maintenance, service or repair of small appliances, recovery equipment
manufactured after ________ must be certified by an EPA approved organization?
- ANSWER-November 15, 1993
