EPA 609 FINAL EXAM 2024 ACTUAL EXAM COMPLETE
200 QUESTIONS WITH DETAILED VERIFIED ANSWERS
(100% CORRECT ANSWERS) /ALREADY GRADED A+
Lifetime of CFCs is believed to range from _____ years? - ANSWER: 2 to 100
For determining the Ozone Depletion Potential ________ having been assigned a
factor of 1? - ANSWER: CFC-11
Ester-based synthetic oils can be mixed with other oils? - ANSWER: False
Since ________, it is no longer legal for CFCs to be manufactured or imported into
the United States? - ANSWER: January 1, 1996
Since _____, it is illegal to vent substitutes for CFC and HCFC refrigerants? - ANSWER:
November 15, 1995
Ozone at ground level ans at Stratosphere is a harmful pollutant? - ANSWER: False
A refillable refrigerant cylinder must not be filled above ______ of its full capacity? -
ANSWER: 80%
Each chlorine ion can able to destroy ______ ozone mole? - ANSWER: 100,000
R-134a is a chlorine-free refrigerant? - ANSWER: True
MVAC systems being disposed must be evacuated to _____ of mercury before being
scrapped? - ANSWER: 4 inches
Ozone layer absorbs and scatters ________ from the sun? - ANSWER: Ultraviolet
light
An award of up to ______ may be paid to a person supplying information that leads
to a penalty against a technician who is intentionally venting? - ANSWER: 10,000
Every refrigerant cylinder need not be protected by some type of pressure relief
device? - ANSWER: False
Ozone molecule consists of ______ atoms of oxygen? - ANSWER: Three
CFCs are highly reactive in _____ of atmosphere? - ANSWER: Lower level
Over the road refrigeration units and R-22 (HCFC) air conditioning, such as that
found in buses, also requires Section ______ certification? - ANSWER: 608
Stratosphere layer consists of about _____ of the available Ozone? - ANSWER: 90%
, Moisture level in Recycled R-12 (CFC-12) that has been directly removed from, and
intended to be returned to, a mobile air-conditioning system cannot exceed _______
PPM by weight? - ANSWER: 15
Ozone depletion Increase global warming? - ANSWER: True
Non-condensables in a refrigeration system result in a _______ discharge pressure? -
ANSWER: Higher
At high temperaturesCFC-12 can decompose to form _______? - ANSWER: Both
options are correct: hydrofluoric acid and hydrochloric acid
If a technician is already trained and certified to handle CFC-12, he has to be re-
certified to handle HFC-134a? - ANSWER: False
The Clean Air Act (CAA) of ______ directs EPA to establish requirements to prevent
the release of ozone depleting substances? - ANSWER: 1990
Refrigerants are lighter than the air? - ANSWER: False
External Recovery Tanks must be evacuated to ______ of mercury before being put
into service? - ANSWER: 27 inches
Disposable Refrigerant Tanks, under _______ must be evacuated before being
scrapped? - ANSWER: 20 pounds
______ of stratospheric chlorine comes from ozone-depleting substances? -
ANSWER: 82%
Which of the following refrigerants has high ozone-depletion potential? - ANSWER:
CFCs
Supplies of CFC refrigerant for equipment servicing can ONLY come from which of
the following? - ANSWER: All of the above recovery, recycle, reclaimation
Which of the following has the Ozone Depletion Potential (ODP) value of 1? -
ANSWER: CFC-11
CFCs manufacture was discontinued as of _______? - ANSWER: January 1, 1996
HFC-134a, is the refrigerant that replaced _______ in automotive air conditioning
systems? - ANSWER: R-12
Which of the following in refrigerant makes them chemically less stable once they
enter the atmosphere? - ANSWER: Hydrogen
200 QUESTIONS WITH DETAILED VERIFIED ANSWERS
(100% CORRECT ANSWERS) /ALREADY GRADED A+
Lifetime of CFCs is believed to range from _____ years? - ANSWER: 2 to 100
For determining the Ozone Depletion Potential ________ having been assigned a
factor of 1? - ANSWER: CFC-11
Ester-based synthetic oils can be mixed with other oils? - ANSWER: False
Since ________, it is no longer legal for CFCs to be manufactured or imported into
the United States? - ANSWER: January 1, 1996
Since _____, it is illegal to vent substitutes for CFC and HCFC refrigerants? - ANSWER:
November 15, 1995
Ozone at ground level ans at Stratosphere is a harmful pollutant? - ANSWER: False
A refillable refrigerant cylinder must not be filled above ______ of its full capacity? -
ANSWER: 80%
Each chlorine ion can able to destroy ______ ozone mole? - ANSWER: 100,000
R-134a is a chlorine-free refrigerant? - ANSWER: True
MVAC systems being disposed must be evacuated to _____ of mercury before being
scrapped? - ANSWER: 4 inches
Ozone layer absorbs and scatters ________ from the sun? - ANSWER: Ultraviolet
light
An award of up to ______ may be paid to a person supplying information that leads
to a penalty against a technician who is intentionally venting? - ANSWER: 10,000
Every refrigerant cylinder need not be protected by some type of pressure relief
device? - ANSWER: False
Ozone molecule consists of ______ atoms of oxygen? - ANSWER: Three
CFCs are highly reactive in _____ of atmosphere? - ANSWER: Lower level
Over the road refrigeration units and R-22 (HCFC) air conditioning, such as that
found in buses, also requires Section ______ certification? - ANSWER: 608
Stratosphere layer consists of about _____ of the available Ozone? - ANSWER: 90%
, Moisture level in Recycled R-12 (CFC-12) that has been directly removed from, and
intended to be returned to, a mobile air-conditioning system cannot exceed _______
PPM by weight? - ANSWER: 15
Ozone depletion Increase global warming? - ANSWER: True
Non-condensables in a refrigeration system result in a _______ discharge pressure? -
ANSWER: Higher
At high temperaturesCFC-12 can decompose to form _______? - ANSWER: Both
options are correct: hydrofluoric acid and hydrochloric acid
If a technician is already trained and certified to handle CFC-12, he has to be re-
certified to handle HFC-134a? - ANSWER: False
The Clean Air Act (CAA) of ______ directs EPA to establish requirements to prevent
the release of ozone depleting substances? - ANSWER: 1990
Refrigerants are lighter than the air? - ANSWER: False
External Recovery Tanks must be evacuated to ______ of mercury before being put
into service? - ANSWER: 27 inches
Disposable Refrigerant Tanks, under _______ must be evacuated before being
scrapped? - ANSWER: 20 pounds
______ of stratospheric chlorine comes from ozone-depleting substances? -
ANSWER: 82%
Which of the following refrigerants has high ozone-depletion potential? - ANSWER:
CFCs
Supplies of CFC refrigerant for equipment servicing can ONLY come from which of
the following? - ANSWER: All of the above recovery, recycle, reclaimation
Which of the following has the Ozone Depletion Potential (ODP) value of 1? -
ANSWER: CFC-11
CFCs manufacture was discontinued as of _______? - ANSWER: January 1, 1996
HFC-134a, is the refrigerant that replaced _______ in automotive air conditioning
systems? - ANSWER: R-12
Which of the following in refrigerant makes them chemically less stable once they
enter the atmosphere? - ANSWER: Hydrogen
