EPA 608 Universal questions and answers

EPA 608 Universal questions and answers
One molecule of chlorine can destroy how many molecules of ozone? - Correct Answer ✔✔
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- 100,000
by by




Ozone has __ atoms of oxygen. - Correct Answer ✔✔ - 3 by by by by by by by by by by by by




In the United States, when were all CFCs phased out by? - Correct Answer ✔✔ - 1995
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In the United States, when were R-22 and R-142b phased out? - Correct Answer ✔✔ - 2020
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In the United States, when will all HCFCs be phased out? - Correct Answer ✔✔ - 2030
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Section 608 of the Clean Air Act is: - Correct Answer ✔✔ - Federal Law by by by by by by by by by by by by by by by




What is the fine for violating the Clean Air Act (as of 2017)? - Correct Answer ✔✔ - $44,539
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per day per violation
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HFO refrigerants are this safety classification: - Correct Answer ✔✔ - A2L
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HFOs contain which of the following? (Select all that apply) - Correct Answer ✔✔ -
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Hydrogen, Fluorine, and Carbon
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Hydrocarbons: (Select all that apply) - Correct Answer ✔✔ - Are generally A3 refrigerants by by by by by by by by by by by by by by




If a refrigerant has an ODP of 0.5, which of the following are true? (Select all that apply) -
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Correct Answer ✔✔ - It contains chlorine, It could be R-22
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Of the following refrigerants, which one has the least global warming potential (GWP)? -
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Correct Answer ✔✔ - R-1234yf
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R-12 has a GWP in which of the following ranges? - Correct Answer ✔✔ - 10,000-50,000
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R-1234yf is the same as: - Correct Answer ✔✔ - HFO-1234yf by by by by by by by by by by by




R-410a has a GWP in which of the following ranges? - Correct Answer ✔✔ - 1000-10,000
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R-410a is the same as - Correct Answer ✔✔ - HFC-410a by by by by by by by by by by by




The GWP of R-290 is greater than which of the following? (Select all that apply) - Correct
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Answer ✔✔ - None of these
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, What is the ODP of R-441a? - Correct Answer ✔✔ - 0
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Which gas is used as a reference for measuring GWP? - Correct Answer ✔✔ - Carbon
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dioxide
by




Which of the following are HFCs? (Select all that apply) - Correct Answer ✔✔ - R-125
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Which of the following are true? (Select all that apply) - Correct Answer ✔✔ - Carbon dioxide
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has a GWP of 1, Carbon dioxide has an ODP of 0
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GWP is a measure of how much energy a gas traps in the atmosphere over 100 years -
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Correct Answer ✔✔ - False
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If a gas has a GWP of 50, it means it has 50 times less global warming potential than carbon
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dioxide. - Correct Answer ✔✔ - False
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R-410a is a A1 refrigerant. It is non-flammable and has low toxicity, making it one of the safest
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refrigerants to use. - Correct Answer ✔✔ - True
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Fractionation (select all that apply): - Correct Answer ✔✔ - Is when refrigerants settle into by by by by by by by by by by by by by by by




layers, Happens in vapor phase
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What is a ternary blend? - Correct Answer ✔✔ - Three refrigerants blended together
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R-407c is an azeotropic blend. - Correct Answer ✔✔ - False
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Alkylbenzene (AB) oil is used for systems with which of the following refrigerants? (Select all by by by by by by by by by by by by by by




that apply) - Correct Answer ✔✔ - HCFC, HCFC blends
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Hygroscopic oils - Correct Answer ✔✔ - Absorb moisture readily by by by by by by by by by by




If we are retrofitting a system to use R-134a, which oil do we need to use? - Correct Answer ✔
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✔ - Polyolester (POE)
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R-1234yf is not miscible in any refrigerant oils. - Correct Answer ✔✔ - False by by by by by by by by by by by by by by




Alkylbenzene (AB) oil is miscible in HCFC refrigerant. - Correct Answer ✔✔ - True by by by by by by by by by by by by by by




An ideal oil is best at handling high temperatures and high pressures. - Correct Answer ✔✔ -
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False
by




Hydrolysis is when refrigerant oils break down in the presence of water. - Correct Answer ✔ by by by by by by by by by by by by by by by by




✔ - True by by