EPA 608
Liberty University
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EPA Section 608 Core questions with complete solutions
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What does ozone in the stratosphere above the earth consist of? correct answer: Molecules containing 3 oxygen atoms 
 
Which of the following refrigerants has the lowest global warming potential? correct answer: a. R-134a 
b. R-407C 
c. R-410A 
d. R-600a 
 
 
 
d. R-600a (GWP - 3) 
 
Which gas is used as the baseline measurement for global warming potential? correct answer: Carbon Dioxide 
 
Which type of refrigerant typically has the lowest global warming potential? correct answer: HFOs 
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EPA section 608 CORE| 72 questions| with complete solutions
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Is this book a formal refrigeration training course? correct answer: It is NOT a formal refrigeration Course 
 
Should EPA regulation CHANGE after a technician becomes certified? correct answer: it is the responsibility of the technician to comply with these changes of EPA Certifications 
 
Can EPA modify test questions and/or require new certification or recertification based on advance in tech? correct answer: They can modify and require a new certification 
 
Does the clean air act require...
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EPA Section 608 Certification CORE questions with complete solutions
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Most Serious Results of damage to the ozone correct answer: Increased Rates of skin cancer in humans 
 
Which human health effect increases from damage to the ozone correct answer: Cases of cataracts 
 
What effects can stratospheric ozone depletion have on the environment? correct answer: Decreased Crop yield and damage to marine organism 
 
what are the characteristics of HFOs correct answer: Non ozone depletion & low global warming potential 
 
What characteristic of HFC refrigerant m...
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EPA 608 core general knowledge| 180 questions| with complete solutions
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which refrigerant can be purchased is you have EPA's section 608 certification correct answer: Only refrigerants that are exempt from the venting prohibition 
 
How should disposable cylinders be discarded? correct answer: Recover all remaining refrigerant, render the cylinders useless, and recycle the metal 
 
CFCs and HCFCs ________making them capable of reaching the stratospheric ozone layer. correct answer: do not dissolve in water or easily break down in the atmosphere. 
 
Ester-base...
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EPA 608 Certification| 70 questions| with complete solutions
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What date was the sale of CFC's & HCFC's restricted to technicians certified in refrigerant recovery? correct answer: November 14, 1994 
 
Section 608 of the Federal Clean Air Act requires technicians to what? correct answer: Recover all refrigerants. 
 
The objective of the Clean Air Act is to protect what? correct answer: The earth's stratosphere. 
 
HFC's correct answer: HydroFlouroCarbon's 
 
CFC's correct answer: ChloroFluoroCarbon's 
 
ODP correct answer: Ozone Depletion...
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EPA 608 Core Universal| 160 questions| with complete solutions
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Refrigeration technicians who violate the Clean Air Act can: correct answer: D) all of the above. 
 
After 1995, any supplies of CFC refrigerant to service existing units in the USA can only come from: correct answer: A) recovery and recycling. 
 
Refrigerant that is recovered can be returned to: correct answer: A) the same system or other systems owned by the same person without restriction. 
 
Refrigerant can not be called "reclaimed" unless it: correct answer: B) has been chemically...
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EPA 608 Core Test Sample| 340 Questions| 50 pages| with complete solutions
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As of what date did it become unlawful to release Class 1 and Class II 
refrigerants to the atmosphere? 
a. July 1, 1992 
b. July 1, 1993 
c. November 14, 1994 
d. January 1, 1996 correct answers: a. July 1, 1992 
 
What is the ozone layer and why is it important to us on Earth? 
a. Thin layer of R-22 in the atmosphere that filters UV. 
b. Protective shield for Earth from the sun's harmful ultraviolent (UV) 
rays in the stratosphere layer that extends about 6 to 30 miles above 
earth 
c. Thin...
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EPA 608 CORE HVAC Exam| 112 questions| With complete solutions
- Exam (elaborations) • 7 pages • 2022
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what is CFCs? correct answers: Chlorofluorocarbons (Chlorine, Fluorine, and carbon) 
 
What is HCFCs? correct answers: Hydrochlorofluorocarbons (hydrogen, chlorine, fluorine, and carbon) 
 
What is ASHRAEs? correct answers: The American Society of Heating Refrigerating and Airconditioning Engineers. A global professional association seeking to advance heating, ventilation, airconditioning and refrigeration systems. 
 
What is the greatest effect in the stratosphere? correct answers: The grea...
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EPA 608 Core 111 questions| with complete solutions
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Refrigeration technicians who violate the clean air act can: 
A. lose their epa certification 
B. be fined. 
C. be required to appear in federal court 
D. all of the above correct answer: all of the above 
 
It has been illegal to vent substitutes for CFC and HCFC refrigerants since: correct answer: november 1995 
 
which refrigerant has the lowest odp? 
R22, R11, R12, R113 correct answer: R22 
 
to remove refrigerant in any condition from a system and store it in an external container witho...
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EPA 608 Core Study Guide| 180 questions| with complete solutions
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A "compound gauge": correct answer: Can only be used for low pressures - Has different unit scales 
 
According to EPA regulations, when system flushing is required following a compressor burnout, the following refrigerant must be used: correct answer: System flushing with refrigerants is illegal 
 
A CFC contains: correct answer: Chlorine, fluorine, carbon 
 
A CFC - 11 cylinder is: correct answer: Orange 
 
An HFC-134a cylinder is: correct answer: Sky blue or pale blue 
 
A chlorine ato...
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