EPA 608 REFRIGERATION CORE REVIEW
2026 EXAMINATION QUESTIONS AND
ANSWERS GRADED A+
⩥ Each chlorine atom in the stratosphere can destroy how many ozone
molecules? Answer: 100,000 ozone molecules
⩥ Which refrigerant contains a CFC?
R500, R12, R113 or R11? Answer: Theyre all CFC's
⩥ HYDROCHLORIC FLORICCARBON (HCFC) refrigerant contain?
Answer: Hydrogen, chlorine, flourine and carbon
⩥ Which refrigerant is a chlorine free refrigerant? Answer: HFC R 134A
⩥ What is the result damage to the ozone layer? Answer: Increases in
human skin cancer
⩥ According to the EPA, chlorine in the stratosphere is believed to come
primarily from the CFCs rather than from volcanoes because Answer: -)
The rise in the amount of chlorine measured in the stratosphere over the
past 2 decades matches the rise of chlorine which has different natural
sources of chlorune overthe same period
,-) The rise of chlorine in the statosphere matches the rise in CFCs over
the same period
-) samples of air taken over erupting volcanoes shows that volcanoes
contribute a small amount of chlorine in the stratosphere compared to
CFCs
-) ALL OF THE ABOVE
⩥ Which is a violation of the EPA clean air act? Answer: -) falsifying or
failing to keep required records
-) failing to keep evacuation levels before opening or disposing of
appliances
-) knowingly releasing HFC's, HCFCs or CFC refrigerants
-) ALL OF THE ABOVE
⩥ Discarding of disposable cylinders is accomplished by Answer:
Assuring that all refrigerant is recovered and that the cylinders are
rendered useless then recycle the metal
⩥ How much money can be awarded to a person who supplies
information leading to a conviction against the technician who is
intentionally venting refrigerants or violatingsome other provision of the
EPA CLEAN AIR ACT Answer: $10,000
⩥ CFC's will no longer be manufactured or imported into the U.S. after
what year? Answer: 1995
,⩥ Since July 1, 1992 it has been illegal to: Answer: Knowingly releasing
HCF or HCFC refrigerants in the U.S.
⩥ Which compounds are controlled by the Montreal protocol? Answer: -
) chloric floric carbons
-) hydro chloric carbons
-) halons
-) all of the above
⩥ EPA regulations cover all AC and refrigeration equipment when
containing what? Answer: Any refrigerant or refrigerant substitute
⩥ The syntetic substitute currently usedwith blends containing HCFCs
is: Answer: Alcobenzine
⩥ What is the significance of atheotropic mixture: Answer: The mixture
combines to act as a single compound refrigerant
⩥ Cooling occurs in a vapor compression refrigeration system when:
Answer: Refrigerant liquid boils into a vapor
⩥ Ozone depletion in the stratosphere is what type of problem: Answer:
Its a GLOBAL problem
, ⩥ The definition of recover is: Answer: To remove refrigerant in any
condition from a system and store it an external container without
neccesarily testing it
⩥ Which of the following leak detection methods is considered by the
EPA to be the effective for locating the general area of small leaks?
Answer: Electronic ultrasonic testers
⩥ Recovery during low ambient temperatures will: Answer: Slow the
recovery process
⩥ During dehydration of a refrigeration system the refrigeration system
is heated to: Answer: Decrease dehydration time
⩥ To determine the safe pressure for leak testing one should use:
Answer: Low side test data plate value
⩥ Care should be used to avoid over filling refrigerant storage cylinders
because: Answer: The internal pressure of the cylinders may rise and
cause an explosion
⩥ When transporting cylinders containing used refrigerants DOT
REQUIRES that you: Answer: attach DOT classification tags
2026 EXAMINATION QUESTIONS AND
ANSWERS GRADED A+
⩥ Each chlorine atom in the stratosphere can destroy how many ozone
molecules? Answer: 100,000 ozone molecules
⩥ Which refrigerant contains a CFC?
R500, R12, R113 or R11? Answer: Theyre all CFC's
⩥ HYDROCHLORIC FLORICCARBON (HCFC) refrigerant contain?
Answer: Hydrogen, chlorine, flourine and carbon
⩥ Which refrigerant is a chlorine free refrigerant? Answer: HFC R 134A
⩥ What is the result damage to the ozone layer? Answer: Increases in
human skin cancer
⩥ According to the EPA, chlorine in the stratosphere is believed to come
primarily from the CFCs rather than from volcanoes because Answer: -)
The rise in the amount of chlorine measured in the stratosphere over the
past 2 decades matches the rise of chlorine which has different natural
sources of chlorune overthe same period
,-) The rise of chlorine in the statosphere matches the rise in CFCs over
the same period
-) samples of air taken over erupting volcanoes shows that volcanoes
contribute a small amount of chlorine in the stratosphere compared to
CFCs
-) ALL OF THE ABOVE
⩥ Which is a violation of the EPA clean air act? Answer: -) falsifying or
failing to keep required records
-) failing to keep evacuation levels before opening or disposing of
appliances
-) knowingly releasing HFC's, HCFCs or CFC refrigerants
-) ALL OF THE ABOVE
⩥ Discarding of disposable cylinders is accomplished by Answer:
Assuring that all refrigerant is recovered and that the cylinders are
rendered useless then recycle the metal
⩥ How much money can be awarded to a person who supplies
information leading to a conviction against the technician who is
intentionally venting refrigerants or violatingsome other provision of the
EPA CLEAN AIR ACT Answer: $10,000
⩥ CFC's will no longer be manufactured or imported into the U.S. after
what year? Answer: 1995
,⩥ Since July 1, 1992 it has been illegal to: Answer: Knowingly releasing
HCF or HCFC refrigerants in the U.S.
⩥ Which compounds are controlled by the Montreal protocol? Answer: -
) chloric floric carbons
-) hydro chloric carbons
-) halons
-) all of the above
⩥ EPA regulations cover all AC and refrigeration equipment when
containing what? Answer: Any refrigerant or refrigerant substitute
⩥ The syntetic substitute currently usedwith blends containing HCFCs
is: Answer: Alcobenzine
⩥ What is the significance of atheotropic mixture: Answer: The mixture
combines to act as a single compound refrigerant
⩥ Cooling occurs in a vapor compression refrigeration system when:
Answer: Refrigerant liquid boils into a vapor
⩥ Ozone depletion in the stratosphere is what type of problem: Answer:
Its a GLOBAL problem
, ⩥ The definition of recover is: Answer: To remove refrigerant in any
condition from a system and store it an external container without
neccesarily testing it
⩥ Which of the following leak detection methods is considered by the
EPA to be the effective for locating the general area of small leaks?
Answer: Electronic ultrasonic testers
⩥ Recovery during low ambient temperatures will: Answer: Slow the
recovery process
⩥ During dehydration of a refrigeration system the refrigeration system
is heated to: Answer: Decrease dehydration time
⩥ To determine the safe pressure for leak testing one should use:
Answer: Low side test data plate value
⩥ Care should be used to avoid over filling refrigerant storage cylinders
because: Answer: The internal pressure of the cylinders may rise and
cause an explosion
⩥ When transporting cylinders containing used refrigerants DOT
REQUIRES that you: Answer: attach DOT classification tags
