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? - correct Answers-Azeotrope
This is a halogenated hydrocarbon containing one or more of the three halogens:
fluorine, chlorine, and bromine - correct Answers-Halocarbon
Chlorofluorocarbons (CFCs) consist of? - correct Answers-Chlorine, fluorine, carbon
CFCs are chemically very stable because they contain no? - correct Answers-Hydrogen
CFCs are damaging to what layer of the ozone layer? - correct Answers-Stratospheric
Of the three common types of refrigerants this one has the highest ozone depletion
potential (ODP) - correct Answers-CFCs
These test methods are assumed by the EPA as the most effective methods for locating
the general area of small leaks - correct Answers-Electronic and ultrasonic
After recovery of a system, if the pressure rises above ambient pressure then what is
most likely happening? - correct Answers-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? - correct Answers-Must be destroyed
by incineration at an approved facility
Where should the system vacuum gauge be connected? - correct Answers-As close as
possible to the system being evacuated
Import of CFCs will be banned after December 31, what year? - correct Answers-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. - correct Answers-Hydrogen
Under EPA's regulations, reclaimed refrigerant must meet what standards for purity
before it can be resold? - correct Answers-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. - correct Answers-System
dependent
All devices used for refrigerant recovery must meet what standards? - correct Answers-
EPA
What is one HCFC? - correct Answers-R-22
Refrigerants that contain no chlorine at all are called? - correct Answers-HFCs
CH2FCF3 refrigerant is a? - correct Answers-HFC
Ozone in the stratosphere consist of molecules containing how many oxygen atoms? -
correct Answers-3
What's in refrigerants causes ozone destruction? - correct Answers-Chlorine
CFCs are able to reach the stratosphere because? - correct Answers-They are
chemically very stable
The lower case letter following the refrigerant number, as in 134a for example, is the? -
correct Answers-Form of the isomer
What refrigerants are toxic? - correct Answers-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 - correct Answers-Group 4
What group of refrigerants are flammable but not toxic? - correct Answers-Group 3
What group of refrigerants do not show flame propagation? - correct Answers-Group 1
R-134a refrigerant tanks are what color? - correct Answers-Light Blue
Disposable cylinders are manufactured to specifications established by? - correct
Answers-DOT
Every refrigerant cylinder is equipped with what device that will automatically vent
pressure from the cylinder before it reaches the rupture point? - correct Answers-Safety
(pressure) relief valve
Refillable cylinders are regulated in their design, fabrication & tested by who for use in
the transportation of refrigerants? - correct Answers-DOT
What is a blend of two or more components who's equilibrium vapor phase & liquid
phase compositions are the same at a given pressure? - correct Answers-Azeotrope
This is a halogenated hydrocarbon containing one or more of the three halogens:
fluorine, chlorine, and bromine - correct Answers-Halocarbon
Chlorofluorocarbons (CFCs) consist of? - correct Answers-Chlorine, fluorine, carbon
CFCs are chemically very stable because they contain no? - correct Answers-Hydrogen
CFCs are damaging to what layer of the ozone layer? - correct Answers-Stratospheric
Of the three common types of refrigerants this one has the highest ozone depletion
potential (ODP) - correct Answers-CFCs
These test methods are assumed by the EPA as the most effective methods for locating
the general area of small leaks - correct Answers-Electronic and ultrasonic
After recovery of a system, if the pressure rises above ambient pressure then what is
most likely happening? - correct Answers-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? - correct Answers-Must be destroyed
by incineration at an approved facility
Where should the system vacuum gauge be connected? - correct Answers-As close as
possible to the system being evacuated
Import of CFCs will be banned after December 31, what year? - correct Answers-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. - correct Answers-Hydrogen
Under EPA's regulations, reclaimed refrigerant must meet what standards for purity
before it can be resold? - correct Answers-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. - correct Answers-System
dependent
All devices used for refrigerant recovery must meet what standards? - correct Answers-
EPA
What is one HCFC? - correct Answers-R-22
Refrigerants that contain no chlorine at all are called? - correct Answers-HFCs
CH2FCF3 refrigerant is a? - correct Answers-HFC
Ozone in the stratosphere consist of molecules containing how many oxygen atoms? -
correct Answers-3
What's in refrigerants causes ozone destruction? - correct Answers-Chlorine
CFCs are able to reach the stratosphere because? - correct Answers-They are
chemically very stable
The lower case letter following the refrigerant number, as in 134a for example, is the? -
correct Answers-Form of the isomer
What refrigerants are toxic? - correct Answers-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 - correct Answers-Group 4
What group of refrigerants are flammable but not toxic? - correct Answers-Group 3
What group of refrigerants do not show flame propagation? - correct Answers-Group 1
R-134a refrigerant tanks are what color? - correct Answers-Light Blue
Disposable cylinders are manufactured to specifications established by? - correct
Answers-DOT
Every refrigerant cylinder is equipped with what device that will automatically vent
pressure from the cylinder before it reaches the rupture point? - correct Answers-Safety
(pressure) relief valve
Refillable cylinders are regulated in their design, fabrication & tested by who for use in
the transportation of refrigerants? - correct Answers-DOT
