1|Page
EPA 608 CORE 2026/2027 BANK QUESTIONS WITH
DETAILED VERIFIED ANSWERS / EXAM QUESTIONS WILL
COME FROM HERE (100% CORRECT ANSWERS/ A+
GRADED
What characteristic or characteristics of CFCs make them more likely
than other chlorine compounds to reach the stratosphere? - ANSWERS-
-Dont disolve iin water
Each chlorine atom in the stratosphere can destroy how many ozone
molecules? - ANSWERS--100,000 ozone molecules
Which refrigerant contains a CFC?
R500, R12, R113 or R11? - ANSWERS--Theyre all CFC's
HYDROCHLORIC FLORICCARBON (HCFC) refrigerant contain? -
ANSWERS--Hydrogen, chlorine, flourine and carbon
Which refrigerant is a chlorine free refrigerant? - ANSWERS--HFC R
134A
,2|Page
What is the result damage to the ozone layer? - ANSWERS--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 -
ANSWERS---) 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? - ANSWERS---) 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 - ANSWERS--
Assuring that all refrigerant is recovered and that the cylinders are
rendered useless then recycle the metal
,3|Page
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 - ANSWERS--$10,000
CFC's will no longer be manufactured or imported into the U.S. after
what year? - ANSWERS--1995
Since July 1, 1992 it has been illegal to: - ANSWERS--Knowingly
releasing HCF or HCFC refrigerants in the U.S.
Which compounds are controlled by the Montreal protocol? -
ANSWERS---) chloric floric carbons
-) hydro chloric carbons
-) halons
-) all of the above
EPA regulations cover all AC and refrigeration equipment when
containing what? - ANSWERS--Any refrigerant or refrigerant substitute
The syntetic substitute currently usedwith blends containing HCFCs is: -
ANSWERS--Alcobenzine
, 4|Page
What is the significance of atheotropic mixture: - ANSWERS--The
mixture combines to act as a single compound refrigerant
Cooling occurs in a vapor compression refrigeration system when: -
ANSWERS--Refrigerant liquid boils into a vapor
Ozone depletion in the stratosphere is what type of problem: -
ANSWERS--Its a GLOBAL problem
The definition of recover is: - ANSWERS--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? -
ANSWERS--Electronic ultrasonic testers
Recovery during low ambient temperatures will: - ANSWERS--Slow the
recovery process
During dehydration of a refrigeration system the refrigeration system is
heated to: - ANSWERS--Decrease dehydration time
To determine the safe pressure for leak testing one should use: -
ANSWERS--Low side test data plate value
EPA 608 CORE 2026/2027 BANK QUESTIONS WITH
DETAILED VERIFIED ANSWERS / EXAM QUESTIONS WILL
COME FROM HERE (100% CORRECT ANSWERS/ A+
GRADED
What characteristic or characteristics of CFCs make them more likely
than other chlorine compounds to reach the stratosphere? - ANSWERS-
-Dont disolve iin water
Each chlorine atom in the stratosphere can destroy how many ozone
molecules? - ANSWERS--100,000 ozone molecules
Which refrigerant contains a CFC?
R500, R12, R113 or R11? - ANSWERS--Theyre all CFC's
HYDROCHLORIC FLORICCARBON (HCFC) refrigerant contain? -
ANSWERS--Hydrogen, chlorine, flourine and carbon
Which refrigerant is a chlorine free refrigerant? - ANSWERS--HFC R
134A
,2|Page
What is the result damage to the ozone layer? - ANSWERS--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 -
ANSWERS---) 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? - ANSWERS---) 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 - ANSWERS--
Assuring that all refrigerant is recovered and that the cylinders are
rendered useless then recycle the metal
,3|Page
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 - ANSWERS--$10,000
CFC's will no longer be manufactured or imported into the U.S. after
what year? - ANSWERS--1995
Since July 1, 1992 it has been illegal to: - ANSWERS--Knowingly
releasing HCF or HCFC refrigerants in the U.S.
Which compounds are controlled by the Montreal protocol? -
ANSWERS---) chloric floric carbons
-) hydro chloric carbons
-) halons
-) all of the above
EPA regulations cover all AC and refrigeration equipment when
containing what? - ANSWERS--Any refrigerant or refrigerant substitute
The syntetic substitute currently usedwith blends containing HCFCs is: -
ANSWERS--Alcobenzine
, 4|Page
What is the significance of atheotropic mixture: - ANSWERS--The
mixture combines to act as a single compound refrigerant
Cooling occurs in a vapor compression refrigeration system when: -
ANSWERS--Refrigerant liquid boils into a vapor
Ozone depletion in the stratosphere is what type of problem: -
ANSWERS--Its a GLOBAL problem
The definition of recover is: - ANSWERS--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? -
ANSWERS--Electronic ultrasonic testers
Recovery during low ambient temperatures will: - ANSWERS--Slow the
recovery process
During dehydration of a refrigeration system the refrigeration system is
heated to: - ANSWERS--Decrease dehydration time
To determine the safe pressure for leak testing one should use: -
ANSWERS--Low side test data plate value
