EPA 608 UNIVERSAL EXAM ACTUAL EXAM ALL 160 QUESTIONS AND CORRECT DETAILED ANSWERS WITH RATIONALES (VERIFIED ANSWERS

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EPA 608 CORE TEST EXAM|| LATEST 2024-
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4045 QUESTIONS AND 100% CORRECT ANSWERS A
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LREADY GRADED A+|| LATEST AND COMPLETEUP l l l l l l



DATE 2024- l



2025 WITH VERIFIED SOLUTIONS|| ASSURED PASS!
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!!
As of what date did it become unlawful to release Class 1 and Class IIrefrig
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erants to the atmosphere?
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a. July 1, 1992 l l




b. July 1, 1993 l l



c. November 14, 1994 l l




d. January 1, 1996 - √ - ANSWER: a. July 1, 1992 l l l l l l l l l l




Quiz :What is the ozone layer and why is it important to us on Earth?
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a. Thin layer of R-22 in the atmosphere that filters UV.
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b. Protective shield for Earth from the sun's harmful ultraviolent (UV)ray
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s in the stratosphere layer that extends about 6 to 30 miles above earth
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c. Thin layer of CFC and HCFC in the atmosphere that filters UV.
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d. Protective layer that shields UV in the Troposphere - √ - l l l l l l l l l l


ANSWER: b.Protective shield for Earth from the sun's harmful ultraviolent (
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UV)
rays in the stratosphere layer that extends about 6 to 30 miles aboveearth
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Quiz :The atom found in CFC and HCFC refrigerants that destroys ozone in thestratosp
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here is? l




a. Fluorine

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b. Carbon
c. Hydrogen
d. Chlorine - √ - ANSWER: d. Chlorine l l l l l l




Quiz :What is an ozone molecule made of?
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a. Refrigerant
b. Ammonia
c. Three oxygen atoms (O3).
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d. Oxygen and ammonia. - √ - ANSWER: Three oxygen atoms (O3).
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Quiz :Which refrigerant is a CFC?
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a. R-134A
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b. R-123
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c. R-22
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d. R-12 - √ - ANSWER: d. R-12
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Quiz :What is the name of the atom that attacks ozone molecules?
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a. CFC atoms l




b. HCFC atoms l




c. Chlorine and bromine atoms emitted into the atmosphere
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d. a and b - √ -
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ANSWER: c. Chlorine and bromine atoms emitted into theatmosphere
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Quiz :Which refrigerant is a HFC?
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a. R-134A
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b. R-123
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c. R-22
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d. R-12 - √ - ANSWER: a. R-134A
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Quiz :Describe how one Chlorine atom can destroy 100,000 ozone molecules.
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a. Chlorine releases one of the oxygen atoms and forms two O2 oxygenmol
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ecules, leaving the chlorine molecule free to attack another
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ozone molecule and repeat the process.
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b. Chlorine locks up the ozone molecule and then and then goes afteranot
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her.
c. Chlorine converts the ozone to bromine and then attacks more ozonemol
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ecules.
d. Chlorine can bleach 100,000 ozone molecules before it weakens. - √ -
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ANSWER: a. Chlorine releases one of the oxygen atoms and forms two O2oxy
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gen molecules, leaving the chlorine molecule free to attack another
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ozone molecule and repeat the process.
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Quiz :Which refrigerant contains no chlorine?
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a. R-134A
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b. R-123
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c. R-22
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d. R-12 - √ - ANSWER: a. R-134A
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Quiz :Name the refrigerant types that belong to CFCs, HCFCs and HFCsa. CF
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C R-11, R-12, R-500
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b. HCFC R-22, R-123 l l




c. HFC R-134a l

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d. All of the above are correct - √ - ANSWER: d. All of the above are correct
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Quiz :The rule of thumb for refilling approved cylinders is a maximum of
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l percent
liquid? l




a. 60%
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b. 79%
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c. 80%
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d. 90% - √ - ANSWER: c. 80%
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Quiz :What do the letters in "HCFC" stand for?
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a. High Carbon Fluorine Chlorine
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b. hydrochlorofluorocarbons
c. Harmful Carbon Fluorine Chlorine l l l




d. highchlorinefluorocarbon - √ - ANSWER: b. hydrochlorofluorocarbons l l l l l l




Quiz :To recover refrigerant is to?
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a. Remove a refrigerant in any condition from a system in either anacti
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ve or passive manner, and store it in an external container without nece
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ssarily testing or processing
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b. Reduce contaminants in used refrigerant by oil separation through filterdry
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ers.
c. Reprocess refrigerant to new product specifications l l l l l




d. Remove refrigerant and change ownership. - √ - l l l l l l l


ANSWER: a. Remove arefrigerant in any condition from a system in either an
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active or passive manner, and store it in an external container
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