EPA SECTION 608 CORE (2019 REVISION) ACTUAL
EXAM COMPLETE 117 QUESTIONS WITH DETAILED
VERIFIED ANSWERS (100% CORRECT ANSWERS) /
ALREADY GRADED A+ UPDATE 2025.
Terms in this set (117)
What does ozone in the b. Molecules containing 3 oxygen atoms.
stratosphere above the earth
consist of?
a. Molecules containing
2oxygen atoms.
b. Molecules containing
3oxygen atoms.
c. Molecules containing
4oxygen atoms.
d. Molecules containing
5oxygen atoms
Which of the following d. R-600a
refrigerants has the lowest
global warming potential? a.
R-134a
b. R-407C
c. R-410A
d. R-600a
, b. Carbon Dioxide
Which of the following
gases is used as the
baseline measurement for
global warming potential?
a. Ammonia
b. Carbon Dioxide
c. CFC-12
d. Propane
Which type of refrigerant b. HFOs
typically has the lowest
global warming potential? a.
HCFCs
b. HFOs
c. HFCs
d. All are equal
What is the state of b. Low pressure superheated vapor
refrigerant entering the
compressor of a
refrigeration system? a.
Low pressure subcooled
liquid b. Low pressure
superheated vapor c.
High pressure subcooled
liquid d. High pressure
subcooled vapor
, d. It is thousands of times greater.
How does the global
warming potential of R410A
compare to that of carbon
dioxide?
a. It is lower.
b. They are equal.
c. It is hundreds of
timesgreater.
d. It is thousands of
timesgreater.
How do the global b. They are significantly lower.
warming potentials of
isobutane
(R-600a), propane (R-290),
and R-441A compare to the
GWPs of HFC-134a, R404A,
and R-410A?
a. They are
significantlyhigher.
b. They are
significantlylower.
c. They are
approximatelyequal
d. They are slightly
higher.
, b. Non-ozone depleting and have low global warming
potentials.
What are the characteristics
of hydrofluoroolefins (HFOs)?
a. Non-ozone
depletingand have high
global warming potentials.
b. Non-ozone
depletingand have low global
warming potentials.
c. Ozone depleting
andhave high global warming
potentials.
d. Ozone depleting
andhave low global warming
potentials.
Why are HFO refrigerants c. They contain fluorine.
less flammable than
hydrocarbon refrigerants? a.
They contain chlorine.
b. They contain bromine.
c. They contain fluorine.
d. They contain carbon.
Which of the following a. R-1234yf
refrigerants is an HFO? a.
R-1234yf
b. R-123
c. R-134a
d. All three are HFOs
EXAM COMPLETE 117 QUESTIONS WITH DETAILED
VERIFIED ANSWERS (100% CORRECT ANSWERS) /
ALREADY GRADED A+ UPDATE 2025.
Terms in this set (117)
What does ozone in the b. Molecules containing 3 oxygen atoms.
stratosphere above the earth
consist of?
a. Molecules containing
2oxygen atoms.
b. Molecules containing
3oxygen atoms.
c. Molecules containing
4oxygen atoms.
d. Molecules containing
5oxygen atoms
Which of the following d. R-600a
refrigerants has the lowest
global warming potential? a.
R-134a
b. R-407C
c. R-410A
d. R-600a
, b. Carbon Dioxide
Which of the following
gases is used as the
baseline measurement for
global warming potential?
a. Ammonia
b. Carbon Dioxide
c. CFC-12
d. Propane
Which type of refrigerant b. HFOs
typically has the lowest
global warming potential? a.
HCFCs
b. HFOs
c. HFCs
d. All are equal
What is the state of b. Low pressure superheated vapor
refrigerant entering the
compressor of a
refrigeration system? a.
Low pressure subcooled
liquid b. Low pressure
superheated vapor c.
High pressure subcooled
liquid d. High pressure
subcooled vapor
, d. It is thousands of times greater.
How does the global
warming potential of R410A
compare to that of carbon
dioxide?
a. It is lower.
b. They are equal.
c. It is hundreds of
timesgreater.
d. It is thousands of
timesgreater.
How do the global b. They are significantly lower.
warming potentials of
isobutane
(R-600a), propane (R-290),
and R-441A compare to the
GWPs of HFC-134a, R404A,
and R-410A?
a. They are
significantlyhigher.
b. They are
significantlylower.
c. They are
approximatelyequal
d. They are slightly
higher.
, b. Non-ozone depleting and have low global warming
potentials.
What are the characteristics
of hydrofluoroolefins (HFOs)?
a. Non-ozone
depletingand have high
global warming potentials.
b. Non-ozone
depletingand have low global
warming potentials.
c. Ozone depleting
andhave high global warming
potentials.
d. Ozone depleting
andhave low global warming
potentials.
Why are HFO refrigerants c. They contain fluorine.
less flammable than
hydrocarbon refrigerants? a.
They contain chlorine.
b. They contain bromine.
c. They contain fluorine.
d. They contain carbon.
Which of the following a. R-1234yf
refrigerants is an HFO? a.
R-1234yf
b. R-123
c. R-134a
d. All three are HFOs
