EPA 608 CORE TEST 2026/2027 BANK / 2
VERSIONS EXAM QUESTIONS WILL
COME FROM HERE/ ALL EXAM
QUESTIONS WITH DETAILED
VERIFIED ANSWERS (100% CORRECT
ANSWERS/ A+ GRADED
Silicone elastomers, for use in seals and gaskets, are not
compatible with which refrigerants?
A) HFOs
B) HCFCs
C) HFCS
D) CFCs - ....ANSWER...A) HFOs
Which of the following refrigerant is an HFO?
A) R-410A
B) R-22
,C) R-1234ze
D) R-134a - ....ANSWER...C) R-1234ze
Which international agreement (Treaty) regulated the
production and use of CFCs, HCFCs, Halons, methyl
chloroform and carbon tetrachloride?
A) Treaty of Ghent
B) Montreal Protocol
C) Kyoto Treaty
D) Council of Nicaea - ....ANSWER...B) Montreal
Protocol
Which of the following refrigerants has the lowest global
warming potential?
A) R-134a
B) R-407C
C) R-410A
D) R-600a - ....ANSWER...D) R-600a
,Which of the following gases is used as a baseline
measurement for global warming potential?
A) ammonia
B) carbon dioxide
C) CFC-12
D) propane - ....ANSWER...B) carbon dioxide
Which type of refrigerant typically has the lowest global
warming potential?
A) HCFCs
B) HFOs
C) HFCs
D) all are equal - ....ANSWER...B) HFOs
What is the state of refrigerant entering the compressor of
a refrigeration system?
A) Low pressure sub-cooled liquid
, B) Low pressure superheated vapor
C) High pressure sub-cooled liquid
D) High pressure sub-cooled vapor - ....ANSWER...B) low
pressure superheated vapor
How does the global warming potential of R-410A
compare to that of carbon dioxide?
A) it is lower
B) they are equal
C) it is hundreds of times greater
D) it is thousands of times greater - ....ANSWER...D) it is
thousands of times greater
How did the global warming potential's of isobutane (R-
600a), propane (R-290), and R-441A compare to the
GWPs of HFC-134a, R404A, and R-410A?
A) they are significantly higher
B) they are significantly lower
C) They are approximately equal
VERSIONS EXAM QUESTIONS WILL
COME FROM HERE/ ALL EXAM
QUESTIONS WITH DETAILED
VERIFIED ANSWERS (100% CORRECT
ANSWERS/ A+ GRADED
Silicone elastomers, for use in seals and gaskets, are not
compatible with which refrigerants?
A) HFOs
B) HCFCs
C) HFCS
D) CFCs - ....ANSWER...A) HFOs
Which of the following refrigerant is an HFO?
A) R-410A
B) R-22
,C) R-1234ze
D) R-134a - ....ANSWER...C) R-1234ze
Which international agreement (Treaty) regulated the
production and use of CFCs, HCFCs, Halons, methyl
chloroform and carbon tetrachloride?
A) Treaty of Ghent
B) Montreal Protocol
C) Kyoto Treaty
D) Council of Nicaea - ....ANSWER...B) Montreal
Protocol
Which of the following refrigerants has the lowest global
warming potential?
A) R-134a
B) R-407C
C) R-410A
D) R-600a - ....ANSWER...D) R-600a
,Which of the following gases is used as a baseline
measurement for global warming potential?
A) ammonia
B) carbon dioxide
C) CFC-12
D) propane - ....ANSWER...B) carbon dioxide
Which type of refrigerant typically has the lowest global
warming potential?
A) HCFCs
B) HFOs
C) HFCs
D) all are equal - ....ANSWER...B) HFOs
What is the state of refrigerant entering the compressor of
a refrigeration system?
A) Low pressure sub-cooled liquid
, B) Low pressure superheated vapor
C) High pressure sub-cooled liquid
D) High pressure sub-cooled vapor - ....ANSWER...B) low
pressure superheated vapor
How does the global warming potential of R-410A
compare to that of carbon dioxide?
A) it is lower
B) they are equal
C) it is hundreds of times greater
D) it is thousands of times greater - ....ANSWER...D) it is
thousands of times greater
How did the global warming potential's of isobutane (R-
600a), propane (R-290), and R-441A compare to the
GWPs of HFC-134a, R404A, and R-410A?
A) they are significantly higher
B) they are significantly lower
C) They are approximately equal
