6/23/25, 5:16 AM EPA SECTION 608 CORE (2019 revision)
EPA SECTION 608 CORE (2019 revision) NEWEST VERSION WITH
COMPLETE QUESTIONS AND ACCURATE DETAILED ANSWERS
\LATEST UPDATE ||VERIFIED SOLUTIONS ALREADY GRADED
A+ LATEST UPDATE 2025-2026
What characteristics of d. They can have very high global
HFC refrigerants make warming potentials.
them damaging to the
environment?
a. They are toxic to plants
and animals at low doses.
b. They contain chlorine
which damages the
ozone layer.
c. They have high
Ozone Depletion
Potential (ODP)
d. They can have very high
global warming potentials.
Why are some of the b. They are less flammable than hydrocarbon
hydrofluoroolefins refrigerants, but most are still mildly flammable.
classified as A2L?
a. They have toxicity
characteristics.
b. They are less flammable than
hydrocarbon refrigerants,
but most are still mildly
flammable.
c. They are prohibited for use
in the U.S.
d. They have ozone
depleting potentials and
have
1/43
,6/23/25, 5:16 AM EPA SECTION 608 CORE (2019 revision)
low global warming
potentials.
How many ozone molecules b. 100,000 molecules
can each
chlorine atom in the
stratosphere destroy?
a. 1,000 molecules
b. 100,000 molecules
c. 100,000,000 molecules
d. None. Chlorine is not
the element in
refrigerant that harms
ozone.
An example of a CFC d. R-12
refrigerant is:
a. R-134a
b. R-123
c. R-22
R-12
d.
Which of the a. R-134a
following is a HFC
refrigerant?
a. R-134a
b. R-115
c. R-22
d. R-11
Which of the following is a a. R-410A
high-pressure refrigerant
under EPA's section 608
regulations?
a. R-410A
b. R-113
c. R-123
d. R-11
2/43
,6/23/25, 5:16 AM EPA SECTION 608 CORE (2019 revision)
Which of these gases help c. Stratospheric Ozone
form the earth's protective
shield?
a. Methane
b. Radon
c. Stratospheric Ozone
d. Carbon Dioxide
3/43
, 6/23/25, 5:16 AM EPA SECTION 608 CORE (2019 revision)
HCFC refrigerants contain c. Hydrogen, Chlorine, Fluorine, & Carbon
which of the following?
a. Helium, Carbon, Fluorine, &
Chlorine
b. Hydrogen, Chlorine, Ferrite,
& Carbon
c. Hydrogen, Chlorine,
Fluorine, &Carbon
d. Hydrogen, Chlorine,
Fluorine, & Calcium
Which of the following c. HCFCs
refrigerants damages
stratospheric ozone?
a. HFOs
b. HFCs
c. HCFCs
d. Ammonia
What is the strongest c.Measurement of HCFCs in air samples from the stratosphere.
evidence that HCFCs are in
the stratosphere?
a. Chemical reactions predict
there should be HCFCs in
the upper atmosphere.
b. Measurement of chlorine
in air samples from the
lower atmosphere.
c. Measurement of HCFCs
in air samples from the
stratosphere.
d. Satellite measurements of
light passing through the
atmosphere.
4/43
EPA SECTION 608 CORE (2019 revision) NEWEST VERSION WITH
COMPLETE QUESTIONS AND ACCURATE DETAILED ANSWERS
\LATEST UPDATE ||VERIFIED SOLUTIONS ALREADY GRADED
A+ LATEST UPDATE 2025-2026
What characteristics of d. They can have very high global
HFC refrigerants make warming potentials.
them damaging to the
environment?
a. They are toxic to plants
and animals at low doses.
b. They contain chlorine
which damages the
ozone layer.
c. They have high
Ozone Depletion
Potential (ODP)
d. They can have very high
global warming potentials.
Why are some of the b. They are less flammable than hydrocarbon
hydrofluoroolefins refrigerants, but most are still mildly flammable.
classified as A2L?
a. They have toxicity
characteristics.
b. They are less flammable than
hydrocarbon refrigerants,
but most are still mildly
flammable.
c. They are prohibited for use
in the U.S.
d. They have ozone
depleting potentials and
have
1/43
,6/23/25, 5:16 AM EPA SECTION 608 CORE (2019 revision)
low global warming
potentials.
How many ozone molecules b. 100,000 molecules
can each
chlorine atom in the
stratosphere destroy?
a. 1,000 molecules
b. 100,000 molecules
c. 100,000,000 molecules
d. None. Chlorine is not
the element in
refrigerant that harms
ozone.
An example of a CFC d. R-12
refrigerant is:
a. R-134a
b. R-123
c. R-22
R-12
d.
Which of the a. R-134a
following is a HFC
refrigerant?
a. R-134a
b. R-115
c. R-22
d. R-11
Which of the following is a a. R-410A
high-pressure refrigerant
under EPA's section 608
regulations?
a. R-410A
b. R-113
c. R-123
d. R-11
2/43
,6/23/25, 5:16 AM EPA SECTION 608 CORE (2019 revision)
Which of these gases help c. Stratospheric Ozone
form the earth's protective
shield?
a. Methane
b. Radon
c. Stratospheric Ozone
d. Carbon Dioxide
3/43
, 6/23/25, 5:16 AM EPA SECTION 608 CORE (2019 revision)
HCFC refrigerants contain c. Hydrogen, Chlorine, Fluorine, & Carbon
which of the following?
a. Helium, Carbon, Fluorine, &
Chlorine
b. Hydrogen, Chlorine, Ferrite,
& Carbon
c. Hydrogen, Chlorine,
Fluorine, &Carbon
d. Hydrogen, Chlorine,
Fluorine, & Calcium
Which of the following c. HCFCs
refrigerants damages
stratospheric ozone?
a. HFOs
b. HFCs
c. HCFCs
d. Ammonia
What is the strongest c.Measurement of HCFCs in air samples from the stratosphere.
evidence that HCFCs are in
the stratosphere?
a. Chemical reactions predict
there should be HCFCs in
the upper atmosphere.
b. Measurement of chlorine
in air samples from the
lower atmosphere.
c. Measurement of HCFCs
in air samples from the
stratosphere.
d. Satellite measurements of
light passing through the
atmosphere.
4/43
