1.pdf file:///C:/Users/HP/Desktop/TYPA%20NEW/EPA%20608%20Pract
EPA 608 Practice Test #1
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?
ANS Azeotrope
2. This is a halogenated hydrocarbon containing one or more of the three halogens
fluorine, chlorine, and bromine
ANS Halocarbon
3. Chlorofluorocarbons (CFCs) consist of?
ANS Chlorine, fluorine, carbon
4. CFCs are chemically very stable because they contain no?
ANS Hydrogen
5. CFCs are damaging to what layer of the ozone layer?
ANS Stratospheric
6. Of the three common types of refrigerants this one has the highest ozone depletion
potential (ODP)
ANS CFCs
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,1.pdf file:///C:/Users/HP/Desktop/TYPA%20NEW/EPA%20608%20Pract
7. These test methods are assumed by the EPA as the most effective methods for locating
the general area of small leaks
ANS Electronic and ultrasonic
8. After recovery of a system, if the pressure rises above ambient pressure then what is
most likely happening?
ANS Trapped refrigerant is probably boiling off
9. In cases where the refrigerant cannot be reclaimed due to contamination with other
refrigerants, what must be done to the refrigerant?
ANS Must be de- stroyed by incineration at an approved facility
10. Where should the system vacuum gauge be connected?
ANS As close as pos- sible to the system being evacuated
11. Import of CFCs will be banned after December 31, what year?
ANS 1995
12. A second category of refrigerant is currently available which is hydrochlo-
rofluorocarbons (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.
ANS Hydrogen
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,1.pdf file:///C:/Users/HP/Desktop/TYPA%20NEW/EPA%20608%20Pract
13. Under EPA's regulations, reclaimed refrigerant must meet what standards for purity
before it can be resold?
ANS ARI-700
14. 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.
ANS System dependent
15. All devices used for refrigerant recovery must meet what standards?
ANS EPA
16. What is one HCFC?
ANS R-22
17. Refrigerants that contain no chlorine at all are called?
ANS HFCs
18. CH2FCF3 refrigerant is a?
ANS HFC
19. Ozone in the stratosphere consist of molecules containing how many oxygen
atoms?
ANS 3
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3 of 19 8/8/2024, 2:47
EPA 608 Practice Test #1
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?
ANS Azeotrope
2. This is a halogenated hydrocarbon containing one or more of the three halogens
fluorine, chlorine, and bromine
ANS Halocarbon
3. Chlorofluorocarbons (CFCs) consist of?
ANS Chlorine, fluorine, carbon
4. CFCs are chemically very stable because they contain no?
ANS Hydrogen
5. CFCs are damaging to what layer of the ozone layer?
ANS Stratospheric
6. Of the three common types of refrigerants this one has the highest ozone depletion
potential (ODP)
ANS CFCs
1/
1 of 19 8/8/2024, 2:47
,1.pdf file:///C:/Users/HP/Desktop/TYPA%20NEW/EPA%20608%20Pract
7. These test methods are assumed by the EPA as the most effective methods for locating
the general area of small leaks
ANS Electronic and ultrasonic
8. After recovery of a system, if the pressure rises above ambient pressure then what is
most likely happening?
ANS Trapped refrigerant is probably boiling off
9. In cases where the refrigerant cannot be reclaimed due to contamination with other
refrigerants, what must be done to the refrigerant?
ANS Must be de- stroyed by incineration at an approved facility
10. Where should the system vacuum gauge be connected?
ANS As close as pos- sible to the system being evacuated
11. Import of CFCs will be banned after December 31, what year?
ANS 1995
12. A second category of refrigerant is currently available which is hydrochlo-
rofluorocarbons (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.
ANS Hydrogen
2/
2 of 19 8/8/2024, 2:47
,1.pdf file:///C:/Users/HP/Desktop/TYPA%20NEW/EPA%20608%20Pract
13. Under EPA's regulations, reclaimed refrigerant must meet what standards for purity
before it can be resold?
ANS ARI-700
14. 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.
ANS System dependent
15. All devices used for refrigerant recovery must meet what standards?
ANS EPA
16. What is one HCFC?
ANS R-22
17. Refrigerants that contain no chlorine at all are called?
ANS HFCs
18. CH2FCF3 refrigerant is a?
ANS HFC
19. Ozone in the stratosphere consist of molecules containing how many oxygen
atoms?
ANS 3
3/
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