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? - ANSWER2 to 100
For determining the Ozone Depletion Potential ________ having been assigned a factor
of 1? - ANSWERCFC-11
Ester-based synthetic oils can be mixed with other oils? - ANSWERFalse
Since ________, it is no longer legal for CFCs to be manufactured or imported into the
United States? - ANSWERJanuary 1, 1996
Since _____, it is illegal to vent substitutes for CFC and HCFC refrigerants? -
ANSWERNovember 15, 1995
Ozone at ground level ans at Stratosphere is a harmful pollutant? - ANSWERFalse
A refillable refrigerant cylinder must not be filled above ______ of its full capacity? -
ANSWER80%
Each chlorine ion can able to destroy ______ ozone mole? - ANSWER100,000
R-134a is a chlorine-free refrigerant? - ANSWERTrue
MVAC systems being disposed must be evacuated to _____ of mercury before being
scrapped? - ANSWER4 inches
Ozone layer absorbs and scatters ________ from the sun? - ANSWERUltraviolet 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? - ANSWER10,000
Every refrigerant cylinder need not be protected by some type of pressure relief device?
- ANSWERFalse
, Ozone molecule consists of ______ atoms of oxygen? - ANSWERThree
CFCs are highly reactive in _____ of atmosphere? - ANSWERLower level
Over the road refrigeration units and R-22 (HCFC) air conditioning, such as that found
in buses, also requires Section ______ certification? - ANSWER608
Stratosphere layer consists of about _____ of the available Ozone? - ANSWER90%
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? - ANSWER15
Ozone depletion Increase global warming? - ANSWERTrue
Non-condensables in a refrigeration system result in a _______ discharge pressure? -
ANSWERHigher
At high temperaturesCFC-12 can decompose to form _______? - ANSWERBoth
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? - ANSWERFalse
The Clean Air Act (CAA) of ______ directs EPA to establish requirements to prevent the
release of ozone depleting substances? - ANSWER1990
Refrigerants are lighter than the air? - ANSWERFalse
External Recovery Tanks must be evacuated to ______ of mercury before being put
into service? - ANSWER27 inches
Disposable Refrigerant Tanks, under _______ must be evacuated before being
scrapped? - ANSWER20 pounds
______ of stratospheric chlorine comes from ozone-depleting substances? -
ANSWER82%
Which of the following refrigerants has high ozone-depletion potential? - ANSWERCFCs
Supplies of CFC refrigerant for equipment servicing can ONLY come from which of the
following? - ANSWERAll of the above recovery, recycle, reclaimation
Which of the following has the Ozone Depletion Potential (ODP) value of 1? -
ANSWERCFC-11
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