EPA 608 Practice Test #1(Questions and Answers)2022
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Course
EPA 608
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EPA 608
What is a blend of two or more components who's equilibrium vapor phase & liquid phase compositions are the same at a given pressure?
Azeotrope
This is a halogenated hydrocarbon containing one or more of the three halogens: fluorine, chlorine, and bromine
Halocarbon
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what is a blend of two or more components whos equilibrium vapor phase amp liquid phase compositions are the same at a given pressure
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EPA 608 Practice Test #1
What is a blend of two or more components who's equilibrium vapor phase & liquid
phase compositions are the same at a given pressure? - Answer Azeotrope
This is a halogenated hydrocarbon containing one or more of the three halogens:
fluorine, chlorine, and bromine - Answer Halocarbon
CFCs are chemically very stable because they contain no? - Answer Hydrogen
CFCs are damaging to what layer of the ozone layer? - Answer Stratospheric
Of the three common types of refrigerants this one has the highest ozone depletion
potential (ODP) - Answer CFCs
These test methods are assumed by the EPA as the most effective methods for locating
the general area of small leaks - Answer Electronic and ultrasonic
After recovery of a system, if the pressure rises above ambient pressure then what is
most likely happening? - Answer Trapped refrigerant is probably boiling off
In cases where the refrigerant cannot be reclaimed due to contamination with other
refrigerants, what must be done to the refrigerant? - Answer Must be destroyed by
incineration at an approved facility
Where should the system vacuum gauge be connected? - Answer As close as possible
to the system being evacuated
Import of CFCs will be banned after December 31, what year? - Answer 1995
A second category of refrigerant is currently available which is hydrochlorofluorocarbons
(HCFCs). Although they contain chlorine, which is damaging to the ozone layer, they
also contain this which makes them chemically less stable once they enter the
atmosphere. - Answer Hydrogen
Under EPA's regulations, reclaimed refrigerant must meet what standards for purity
before it can be resold? - Answer ARI-700
What type of recovery devices are so named because they depend on components of
the system; that is, they capture refrigerant with the assistance of components in the air
conditioning or refrigeration equipment as they are emptying. - Answer System
dependent
, All devices used for refrigerant recovery must meet what standards? - Answer EPA
What is one HCFC? - Answer R-22
Refrigerants that contain no chlorine at all are called? - Answer HFCs
CH2FCF3 refrigerant is a? - Answer HFC
Ozone in the stratosphere consist of molecules containing how many oxygen atoms? -
Answer 3
What's in refrigerants causes ozone destruction? - Answer Chlorine
CFCs are able to reach the stratosphere because? - Answer They are chemically very
stable
The lower case letter following the refrigerant number, as in 134a for example, is the? -
Answer Form of the isomer
What refrigerants are toxic? - Answer Group 2
What group of refrigerants are nonflammable mixtures of group 1 & 3 refrigerants, which
are nonflammable as formulated but who's composition can become flammable do to
fractionation under some leakage situations - Answer Group 4
What group of refrigerants are flammable but not toxic? - Answer Group 3
What group of refrigerants do not show flame propagation? - Answer Group 1
R-134a refrigerant tanks are what color? - Answer Light Blue
Disposable cylinders are manufactured to specifications established by? - Answer DOT
Every refrigerant cylinder is equipped with what device that will automatically vent
pressure from the cylinder before it reaches the rupture point? - Answer Safety
(pressure) relief valve
Refillable cylinders are regulated in their design, fabrication & tested by who for use in
the transportation of refrigerants? - Answer DOT
Capturing and ultimately eliminating the use of chlorofluorocarbons is being done in the
United States to stop damage to what layer of the ozone? - Answer Stratospheric
State and local government's may establish laws that contain what kind of regulations
than Clean Air Act/EPA regulations? - Answer Stricter
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