EPA 608 Core Universal UPDATED
ACTUAL Exam Questions and CORRECT
Answers
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 analyzed and the refrigerant meets the ARI-700 purity standard.
The EPA can require a technician to demonstrate their ability to perform proper procedures for
recovering and/or recycling refrigerant. Failure to demonstrate competency can result in: -
CORRECT ANSWER - A) revocation of the technician's certification.
What characteristic(s) of CFCs make them more likely to reach the stratosphere than most other
compounds containing chlorine? - CORRECT ANSWER - A) Refrigerants that contain
chlorine but not hydrogen are so stable that they do not break down in the lower atmosphere after
being released. The chlorine or bromine reacts with ozone, causing it to change back to oxygen,
thus destroying the ozone layer.
A system is considered dehydrated when: - CORRECT ANSWER - A) the vacuum
indicator shows you have reached and held the required finished vacuum.
Disposable refrigerant containers are used for _______ refrigerant. - CORRECT
ANSWER - C) virgin
,Which refrigerant is an HCFC? - CORRECT ANSWER - A) R-124
What statement is true about an azeotropic refrigerant mixture? - CORRECT ANSWER -
D) It is a mixture that acts like a single-component refrigerant over its entire range.
Chlorofluorocarbons (CFCs) and hydrochlorofluorocarbons (HCFCs) have which of the
following in common? - CORRECT ANSWER - D) They must be recovered before
opening or disposing of appliances.
To scrap a disposable cylinder, the internal cylinder pressure should be reduced to at least: -
CORRECT ANSWER - A) 0 psig.
Manifold gauge sets are often color coded, when this is done, the high pressure gauge is color
coded: - CORRECT ANSWER - A) red.
In general, blended refrigerants should be charged: - CORRECT ANSWER - C) as a
liquid.
Blended refrigerants leak from a system: - CORRECT ANSWER - B) in uneven amounts
due to different vapor pressures.
Which of the following gases help form the earth's protective shield? - CORRECT
ANSWER - D) Stratospheric Ozone
In a refrigeration system, the device that changes a low pressure vapor to a high pressure vapor is
the: - CORRECT ANSWER - C) compressor.
. Data shows that chlorine in the stratosphere comes mainly from CFCs rather than from natural
sources such as volcanoes because: - CORRECT ANSWER - D) All of the above.
, Which atom of the CFC molecule causes ozone depletion? - CORRECT ANSWER - B)
chlorine
The ozone layer protects the earth from: - CORRECT ANSWER - C) ultraviolet radiation
from the sun.
When using with any solvent, cleaner, chemical or refrigerant, you should review: - CORRECT
ANSWER - C) material safety data sheets.
An award of up to what amount may be paid to a person supplying information that leads to a
penalty against a technician who is intentionally venting? - CORRECT ANSWER - B)
$10,000
The Montreal Protocol is: - CORRECT ANSWER - D) a treaty among nations that
controls production of CFC's and HCFC's.
Which refrigerant is an HCFC? - CORRECT ANSWER - A) R-123
What is one of the most serious results of damage to the ozone layer? - CORRECT
ANSWER - C) increases in human skin cancer
Of the refrigerants listed below, which has the lowest ozone depletion potential? - CORRECT
ANSWER - A) R-22
To determine the maximum allowable pressure to use when checking a system, check: -
CORRECT ANSWER - C) the design pressure on the equipment nameplate
Ozone depletion potential, or "ODP," is: - CORRECT ANSWER - C) A measure of the
ability of CFCs' and HCFCs' to destroy ozone.
An example of an HFC refrigerant is: - CORRECT ANSWER - D) R-134a.
ACTUAL Exam Questions and CORRECT
Answers
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 analyzed and the refrigerant meets the ARI-700 purity standard.
The EPA can require a technician to demonstrate their ability to perform proper procedures for
recovering and/or recycling refrigerant. Failure to demonstrate competency can result in: -
CORRECT ANSWER - A) revocation of the technician's certification.
What characteristic(s) of CFCs make them more likely to reach the stratosphere than most other
compounds containing chlorine? - CORRECT ANSWER - A) Refrigerants that contain
chlorine but not hydrogen are so stable that they do not break down in the lower atmosphere after
being released. The chlorine or bromine reacts with ozone, causing it to change back to oxygen,
thus destroying the ozone layer.
A system is considered dehydrated when: - CORRECT ANSWER - A) the vacuum
indicator shows you have reached and held the required finished vacuum.
Disposable refrigerant containers are used for _______ refrigerant. - CORRECT
ANSWER - C) virgin
,Which refrigerant is an HCFC? - CORRECT ANSWER - A) R-124
What statement is true about an azeotropic refrigerant mixture? - CORRECT ANSWER -
D) It is a mixture that acts like a single-component refrigerant over its entire range.
Chlorofluorocarbons (CFCs) and hydrochlorofluorocarbons (HCFCs) have which of the
following in common? - CORRECT ANSWER - D) They must be recovered before
opening or disposing of appliances.
To scrap a disposable cylinder, the internal cylinder pressure should be reduced to at least: -
CORRECT ANSWER - A) 0 psig.
Manifold gauge sets are often color coded, when this is done, the high pressure gauge is color
coded: - CORRECT ANSWER - A) red.
In general, blended refrigerants should be charged: - CORRECT ANSWER - C) as a
liquid.
Blended refrigerants leak from a system: - CORRECT ANSWER - B) in uneven amounts
due to different vapor pressures.
Which of the following gases help form the earth's protective shield? - CORRECT
ANSWER - D) Stratospheric Ozone
In a refrigeration system, the device that changes a low pressure vapor to a high pressure vapor is
the: - CORRECT ANSWER - C) compressor.
. Data shows that chlorine in the stratosphere comes mainly from CFCs rather than from natural
sources such as volcanoes because: - CORRECT ANSWER - D) All of the above.
, Which atom of the CFC molecule causes ozone depletion? - CORRECT ANSWER - B)
chlorine
The ozone layer protects the earth from: - CORRECT ANSWER - C) ultraviolet radiation
from the sun.
When using with any solvent, cleaner, chemical or refrigerant, you should review: - CORRECT
ANSWER - C) material safety data sheets.
An award of up to what amount may be paid to a person supplying information that leads to a
penalty against a technician who is intentionally venting? - CORRECT ANSWER - B)
$10,000
The Montreal Protocol is: - CORRECT ANSWER - D) a treaty among nations that
controls production of CFC's and HCFC's.
Which refrigerant is an HCFC? - CORRECT ANSWER - A) R-123
What is one of the most serious results of damage to the ozone layer? - CORRECT
ANSWER - C) increases in human skin cancer
Of the refrigerants listed below, which has the lowest ozone depletion potential? - CORRECT
ANSWER - A) R-22
To determine the maximum allowable pressure to use when checking a system, check: -
CORRECT ANSWER - C) the design pressure on the equipment nameplate
Ozone depletion potential, or "ODP," is: - CORRECT ANSWER - C) A measure of the
ability of CFCs' and HCFCs' to destroy ozone.
An example of an HFC refrigerant is: - CORRECT ANSWER - D) R-134a.
