EPA 608 Practice Test #1-2024
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 Ans-Azeotrope
This is a halogenated hydrocarbon containing one or more of the three halogens: fluorine, chlorine, and brom...
this is a halogenated hydrocarbon containing one o
chlorofluorocarbons cfcs consist of
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EPA 608 Practice Test #1-2024
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 Ans-Azeotrope
This is a halogenated hydrocarbon containing one or more of the three halogens:
fluorine, chlorine, and bromine -Correct Ans-Halocarbon
CFCs are chemically very stable because they contain no? -Correct Ans-Hydrogen
CFCs are damaging to what layer of the ozone layer? -Correct Ans-Stratospheric
Of the three common types of refrigerants this one has the highest ozone depletion
potential (ODP) -Correct Ans-CFCs
These test methods are assumed by the EPA as the most effective methods for locating
the general area of small leaks -Correct Ans-Electronic and ultrasonic
After recovery of a system, if the pressure rises above ambient pressure then what is
most likely happening? -Correct Ans-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 Ans-Must be destroyed by
incineration at an approved facility
Where should the system vacuum gauge be connected? -Correct Ans-As close as
possible to the system being evacuated
, Import of CFCs will be banned after December 31, what year? -Correct Ans-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 Ans-Hydrogen
Under EPA's regulations, reclaimed refrigerant must meet what standards for purity
before it can be resold? -Correct Ans-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 Ans-System
dependent
All devices used for refrigerant recovery must meet what standards? -Correct Ans-EPA
What is one HCFC? -Correct Ans-R-22
Refrigerants that contain no chlorine at all are called? -Correct Ans-HFCs
CH2FCF3 refrigerant is a? -Correct Ans-HFC
Ozone in the stratosphere consist of molecules containing how many oxygen atoms? -
Correct Ans-3
What's in refrigerants causes ozone destruction? -Correct Ans-Chlorine
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