EPA Practice Tests
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EPA Practice Test – Core #11 Quiz
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EPA Practice Test – Core #21 Quiz
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EPA Practice Test – Core #31 Quiz
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EPA Practice Test – Core #41 Quiz
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EPA Practice Test – Core #51 Quiz
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EPA Practice Test – Core #61 Quiz
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EPA Practice Test – Core #71 Quiz
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EPA Practice Test – Core #81 Quiz
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EPA Practice Test – Core #91 Quiz
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EPA Practice Test – Core #101 Quiz
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Question 1 of 25
1. Question
What percentage of ozone gas is contained over the earth’s surface in the stratospheric layer?
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Question 2 of 25
2. Question
Asphyxia describes a lack of
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Question 3 of 25
3. Question
Since _______, it has been a violation, as per the EPA, to vent HFCs.
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Question 4 of 25
4. Question
What kind of refrigerants will be used when virgin supplies of CFCs are depleted?
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Question 5 of 25
5. Question
There is an increase in ground level ozone when there is a depletion of ozone in the stratosphere.
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Question 6 of 25
6. Question
What happens to the quality of emissions potentialized by long hoses?
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Question 7 of 25
7. Question
Which of the following devices is used in order to determine the general area of a leak?
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Question 8 of 25
8. Question
Esters are the oils used in most R134a refrigeration systems.
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Question 9 of 25
9. Question
The piping connection to the vacuum pump should be as short in length as possible
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Question 10 of 25
10. Question
If nitrogen is used to flush the debris out of the system, it may not be legally vented after recovering the refrigerant.
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Question 11 of 25
11. Question
Refrigerants can displace oxygen and lead to suffocation (when displacing large quantities).
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Question 12 of 25
12. Question
The system should be isolated when measuring a system’s vacuum.
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Question 13 of 25
13. Question
How many ports do recovery cylinders have?
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Question 14 of 25
14. Question
Chlorine added to the air by erupting volcanoes contributes to less pollution than CFCs because it dissolves with water and comes down with rain.
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Question 15 of 25
15. Question
______ in the upper stratosphere indicates that the ozone layer is being destroyed.
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Question 16 of 25
16. Question
An explosion may occur when oxygen or compressed air are mixed with refrigerants.
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Question 17 of 25
17. Question
The same recovery tank must not contain different refrigerants
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Question 18 of 25
18. Question
Which of the following cylinders are used only with a virgin refrigerant?
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Question 19 of 25
19. Question
During recovery, refrigerant cylinders may be heated with an open flame during recovery.
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Question 20 of 25
20. Question
The diameter of the piping connection to the vacuum pump should be as large as possible.
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Question 21 of 25
21. Question
The vacuum pump should be connected as far as possible from the system vacuum gauge.
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Question 22 of 25
22. Question
Appliances with 15 pounds or less of refrigerant use what kind of recovery equipment?
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Question 23 of 25
23. Question
What is the process that ensures the reuse of refrigerants by separating the oil from the refrigerant and removing moisture from the refrigerant by passing it through one or more of the filter dryers?
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Question 24 of 25
24. Question
Venting refrigerants was formally banned with the creation of the Clean Air Act
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Question 25 of 25
25. Question
What is one possible result of the inhalation of refrigerant vapors or mist?
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