EPA 608 CORE TEST EXAM 2026/2027
BANK WITH 500 QUESTIONS WITH
DETAILED VERIFIED ANSWERS / EXAM
QUESTIONS WILL COME FROM HERE
(100% CORRECT ANSWERS/ A+
GRADED
After refrigerant liquid transfer between recovery unit and
the system being emptied, you need to avoid trapping: -
....ANSWER...liquid refrigerant between service valves.
When using nitrogen to pressurize a system, you should: -
....ANSWER...only charge with nitrogen vapor.
What effects can ozone depletion have on the
environment? - ....ANSWER...reduced crop yields
reduced marine life
increased ground-level ozone
all of the above
,Ozone depletion in the stratosphere is what type of
problem? - ....ANSWER...Global
When transporting cylinders containing used refrigerant,
the DOT requires that you: - ....ANSWER...attach DOT
classification tags.
It is necessary to place a refrigerant label on: -
....ANSWER...a refrigerant cylinder which is being
returned for reclaiming.
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? -
....ANSWER...$10,000
If an oil is hygroscopic it means that it: -
....ANSWER...readily absorbs moisture.
According to EPA regulations, which of the following is
procedures is not an approved technique for system
cleanup after a burnout? - ....ANSWER...flushing with
liquid refrigerant to clean tubing
,Refrigerant can not be called "reclaimed" unless it: -
....ANSWER...has been chemically analyzed and the
refrigerant meets the ARI-700 purity standard.
Which gas(es) would cause the LEAST damage to the
environment during a leak check? - ....ANSWER...dry
nitrogen
When a system will not hold a vacuum after it has been
evacuated, then: - ....ANSWER...the system may be
leaking.
It is important not to mix different refrigerants in the
same container because: - ....ANSWER...the mixture may
be impossible to reclaim.
According to EPA regulations, which of the following is
procedures is not an approved technique for system
cleanup after a burnout? - ....ANSWER...flushing with
liquid refrigerant to clean tubing
, When evacuating a system, the hoses should be: -
....ANSWER...equal to or larger than vacuum pump inlet
connection.
When moisture exists in an operating system, which of the
following is the most likely to occur? - ....ANSWER...Acid
will form
A refillable refrigerant cylinder must never be filled to
more than ________ of its capacity by weight: -
....ANSWER...80%
Of the refrigerants listed below, which has the lowest
ozone depletion potential?
R-22
R-11
R-12
R-113 - ....ANSWER...R-22
In general, blended refrigerants should be charged: -
....ANSWER...as a liquid
BANK WITH 500 QUESTIONS WITH
DETAILED VERIFIED ANSWERS / EXAM
QUESTIONS WILL COME FROM HERE
(100% CORRECT ANSWERS/ A+
GRADED
After refrigerant liquid transfer between recovery unit and
the system being emptied, you need to avoid trapping: -
....ANSWER...liquid refrigerant between service valves.
When using nitrogen to pressurize a system, you should: -
....ANSWER...only charge with nitrogen vapor.
What effects can ozone depletion have on the
environment? - ....ANSWER...reduced crop yields
reduced marine life
increased ground-level ozone
all of the above
,Ozone depletion in the stratosphere is what type of
problem? - ....ANSWER...Global
When transporting cylinders containing used refrigerant,
the DOT requires that you: - ....ANSWER...attach DOT
classification tags.
It is necessary to place a refrigerant label on: -
....ANSWER...a refrigerant cylinder which is being
returned for reclaiming.
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? -
....ANSWER...$10,000
If an oil is hygroscopic it means that it: -
....ANSWER...readily absorbs moisture.
According to EPA regulations, which of the following is
procedures is not an approved technique for system
cleanup after a burnout? - ....ANSWER...flushing with
liquid refrigerant to clean tubing
,Refrigerant can not be called "reclaimed" unless it: -
....ANSWER...has been chemically analyzed and the
refrigerant meets the ARI-700 purity standard.
Which gas(es) would cause the LEAST damage to the
environment during a leak check? - ....ANSWER...dry
nitrogen
When a system will not hold a vacuum after it has been
evacuated, then: - ....ANSWER...the system may be
leaking.
It is important not to mix different refrigerants in the
same container because: - ....ANSWER...the mixture may
be impossible to reclaim.
According to EPA regulations, which of the following is
procedures is not an approved technique for system
cleanup after a burnout? - ....ANSWER...flushing with
liquid refrigerant to clean tubing
, When evacuating a system, the hoses should be: -
....ANSWER...equal to or larger than vacuum pump inlet
connection.
When moisture exists in an operating system, which of the
following is the most likely to occur? - ....ANSWER...Acid
will form
A refillable refrigerant cylinder must never be filled to
more than ________ of its capacity by weight: -
....ANSWER...80%
Of the refrigerants listed below, which has the lowest
ozone depletion potential?
R-22
R-11
R-12
R-113 - ....ANSWER...R-22
In general, blended refrigerants should be charged: -
....ANSWER...as a liquid
