EPA 608 Core Exam Questions
______ do not contain chlorine and have no ODP.
A. CFCs
B. HCFCs
C. HFCs
D. Halons
Answer: C
______ have the highest ODP.
A. HFCs
B. HCFCs
C. CFCs
D. Natural refrigerants
Answer: C
________ recovery hoses will cause excessive pressure drop, increased recovery
time, and a potential for increased emissions.
A. Short
B. Long
C. Wide
D. Narrow
Answer: B
A _________ mixture acts like a single component refrigerant over its entire
temperature/pressure range and does not have a temperature glide.
A. Zeotropic
B. Azeotropic
C. Blended
,D. Ternary
Answer: B
A recovery cylinder that shows signs of rust or appears to not be secure, should be
reduced to this pressure before discarding.
A. 5 psig
B. 10 psig
C. 0 psig
D. 15 psig
Answer: C
A single Chlorine atom can destroy _____ thousand Ozone molecules.
A. 10
B. 50
C. 100
D. 200
Answer: C
A system is dehydrated to remove water and _____ ______.
A. Air pressure
B. Water vapor
C. Oil residue
D. Acid buildup
Answer: B
A system that experienced a compressor burn-out may have ______ oil.
A. Clean
B. Fresh
C. Contaminated
, D. Synthetic
Answer: C
A system that will not hold a vacuum probably has a ____.
A. Leak
B. Blockage
C. Overcharge
D. Filter
Answer: A
According to the EPA, which of the following do NOT contribute to global warming?
CFC, HCFC, HFC?
A. Only CFCs
B. Only HFCs
C. Only HCFCs
D. All contribute
Answer: D
After completing the transfer of liquid refrigerant between a recovery unit and a
refrigeration system, you should guard against trapping liquid refrigerant between
____ ____.
A. Compressor valves
B. Service valves
C. Relief valves
D. Check valves
Answer: B
After using an electronic or ultrasonic leak detector to determine the general area of
a leak, the use of _____ ______ will pinpoint the leak.
A. Dye injector
B. Halide torch
______ do not contain chlorine and have no ODP.
A. CFCs
B. HCFCs
C. HFCs
D. Halons
Answer: C
______ have the highest ODP.
A. HFCs
B. HCFCs
C. CFCs
D. Natural refrigerants
Answer: C
________ recovery hoses will cause excessive pressure drop, increased recovery
time, and a potential for increased emissions.
A. Short
B. Long
C. Wide
D. Narrow
Answer: B
A _________ mixture acts like a single component refrigerant over its entire
temperature/pressure range and does not have a temperature glide.
A. Zeotropic
B. Azeotropic
C. Blended
,D. Ternary
Answer: B
A recovery cylinder that shows signs of rust or appears to not be secure, should be
reduced to this pressure before discarding.
A. 5 psig
B. 10 psig
C. 0 psig
D. 15 psig
Answer: C
A single Chlorine atom can destroy _____ thousand Ozone molecules.
A. 10
B. 50
C. 100
D. 200
Answer: C
A system is dehydrated to remove water and _____ ______.
A. Air pressure
B. Water vapor
C. Oil residue
D. Acid buildup
Answer: B
A system that experienced a compressor burn-out may have ______ oil.
A. Clean
B. Fresh
C. Contaminated
, D. Synthetic
Answer: C
A system that will not hold a vacuum probably has a ____.
A. Leak
B. Blockage
C. Overcharge
D. Filter
Answer: A
According to the EPA, which of the following do NOT contribute to global warming?
CFC, HCFC, HFC?
A. Only CFCs
B. Only HFCs
C. Only HCFCs
D. All contribute
Answer: D
After completing the transfer of liquid refrigerant between a recovery unit and a
refrigeration system, you should guard against trapping liquid refrigerant between
____ ____.
A. Compressor valves
B. Service valves
C. Relief valves
D. Check valves
Answer: B
After using an electronic or ultrasonic leak detector to determine the general area of
a leak, the use of _____ ______ will pinpoint the leak.
A. Dye injector
B. Halide torch
