EPA 608 Universal Exam Questions and
Answers
One molecule of chlorine can destroy how many molecules of ozone? - correct
Answers-100,000
Ozone has __ atoms of oxygen. - correct Answers-3
In the United States, when were all CFCs phased out by? - correct Answers-1995
In the United States, when were R-22 and R-142b phased out? - correct Answers-2020
In the United States, when will all HCFCs be phased out? - correct Answers-2030
Section 608 of the Clean Air Act is: - correct Answers-Federal Law
What is the fine for violating the Clean Air Act (as of 2017)? - correct Answers-$44,539
per day per violation
HFO refrigerants are this safety classification: - correct Answers-A2L
HFOs contain which of the following? (Select all that apply) - correct Answers-
Hydrogen, Fluorine, and Carbon
Hydrocarbons: (Select all that apply) - correct Answers-Are generally A3 refrigerants
If a refrigerant has an ODP of 0.5, which of the following are true? (Select all that apply)
- correct Answers-It contains chlorine, It could be R-22
Of the following refrigerants, which one has the least global warming potential (GWP)? -
correct Answers-R-1234yf
R-12 has a GWP in which of the following ranges? - correct Answers-10,000-50,000
R-1234yf is the same as: - correct Answers-HFO-1234yf
R-410a has a GWP in which of the following ranges? - correct Answers-1000-10,000
R-410a is the same as - correct Answers-HFC-410a
, The GWP of R-290 is greater than which of the following? (Select all that apply) -
correct Answers-None of these
What is the ODP of R-441a? - correct Answers-0
Which gas is used as a reference for measuring GWP? - correct Answers-Carbon
dioxide
Which of the following are HFCs? (Select all that apply) - correct Answers-R-125
Which of the following are true? (Select all that apply) - correct Answers-Carbon dioxide
has a GWP of 1, Carbon dioxide has an ODP of 0
GWP is a measure of how much energy a gas traps in the atmosphere over 100 years -
correct Answers-False
If a gas has a GWP of 50, it means it has 50 times less global warming potential than
carbon dioxide. - correct Answers-False
R-410a is a A1 refrigerant. It is non-flammable and has low toxicity, making it one of the
safest refrigerants to use. - correct Answers-True
Fractionation (select all that apply): - correct Answers-Is when refrigerants settle into
layers, Happens in vapor phase
What is a ternary blend? - correct Answers-Three refrigerants blended together
R-407c is an azeotropic blend. - correct Answers-False
Alkylbenzene (AB) oil is used for systems with which of the following refrigerants?
(Select all that apply) - correct Answers-HCFC, HCFC blends
Hygroscopic oils - correct Answers-Absorb moisture readily
If we are retrofitting a system to use R-134a, which oil do we need to use? - correct
Answers-Polyolester (POE)
R-1234yf is not miscible in any refrigerant oils. - correct Answers-False
Alkylbenzene (AB) oil is miscible in HCFC refrigerant. - correct Answers-True
An ideal oil is best at handling high temperatures and high pressures. - correct
Answers-False
Hydrolysis is when refrigerant oils break down in the presence of water. - correct
Answers-True
Answers
One molecule of chlorine can destroy how many molecules of ozone? - correct
Answers-100,000
Ozone has __ atoms of oxygen. - correct Answers-3
In the United States, when were all CFCs phased out by? - correct Answers-1995
In the United States, when were R-22 and R-142b phased out? - correct Answers-2020
In the United States, when will all HCFCs be phased out? - correct Answers-2030
Section 608 of the Clean Air Act is: - correct Answers-Federal Law
What is the fine for violating the Clean Air Act (as of 2017)? - correct Answers-$44,539
per day per violation
HFO refrigerants are this safety classification: - correct Answers-A2L
HFOs contain which of the following? (Select all that apply) - correct Answers-
Hydrogen, Fluorine, and Carbon
Hydrocarbons: (Select all that apply) - correct Answers-Are generally A3 refrigerants
If a refrigerant has an ODP of 0.5, which of the following are true? (Select all that apply)
- correct Answers-It contains chlorine, It could be R-22
Of the following refrigerants, which one has the least global warming potential (GWP)? -
correct Answers-R-1234yf
R-12 has a GWP in which of the following ranges? - correct Answers-10,000-50,000
R-1234yf is the same as: - correct Answers-HFO-1234yf
R-410a has a GWP in which of the following ranges? - correct Answers-1000-10,000
R-410a is the same as - correct Answers-HFC-410a
, The GWP of R-290 is greater than which of the following? (Select all that apply) -
correct Answers-None of these
What is the ODP of R-441a? - correct Answers-0
Which gas is used as a reference for measuring GWP? - correct Answers-Carbon
dioxide
Which of the following are HFCs? (Select all that apply) - correct Answers-R-125
Which of the following are true? (Select all that apply) - correct Answers-Carbon dioxide
has a GWP of 1, Carbon dioxide has an ODP of 0
GWP is a measure of how much energy a gas traps in the atmosphere over 100 years -
correct Answers-False
If a gas has a GWP of 50, it means it has 50 times less global warming potential than
carbon dioxide. - correct Answers-False
R-410a is a A1 refrigerant. It is non-flammable and has low toxicity, making it one of the
safest refrigerants to use. - correct Answers-True
Fractionation (select all that apply): - correct Answers-Is when refrigerants settle into
layers, Happens in vapor phase
What is a ternary blend? - correct Answers-Three refrigerants blended together
R-407c is an azeotropic blend. - correct Answers-False
Alkylbenzene (AB) oil is used for systems with which of the following refrigerants?
(Select all that apply) - correct Answers-HCFC, HCFC blends
Hygroscopic oils - correct Answers-Absorb moisture readily
If we are retrofitting a system to use R-134a, which oil do we need to use? - correct
Answers-Polyolester (POE)
R-1234yf is not miscible in any refrigerant oils. - correct Answers-False
Alkylbenzene (AB) oil is miscible in HCFC refrigerant. - correct Answers-True
An ideal oil is best at handling high temperatures and high pressures. - correct
Answers-False
Hydrolysis is when refrigerant oils break down in the presence of water. - correct
Answers-True
