CFC CORE 2026 STUDY GUIDE QUESTIONS AND
ANSWERS RATED A+
✔✔On a typical gauge manifold set,the high-pressure gauge is color-coded.
A.green
B.yellow
C.blue
D.red - ✔✔D
✔✔_is a safety precaution that must be followed.
A.Storing cylinders in direct sunlight at a temperature of more than 125
B.Storing recovered refrigerant in new DOT refrigerant cylinders
C.Shipping refrigerant cylinders in the horizontal position
D.Refraining from using oxygen to purge lines or pressurize systems - ✔✔D
✔✔Since 1995,supplies of CFC refrigerants for equipment servicing come from__.
A.recovery and recycling
B.solvent conversion
C.European chemical manufacturers
D.third world chemical manufacturers - ✔✔A
✔✔__results in violation of the Clean Air Act.
A.Using dry nitrogen to pressurize systems
B.Having a cylinder that is clearly marked with the chemical name
C.An accusation of misconduct
D.Failing to reach required evacuation levels betore opening or disposing of appliances
- ✔✔D
✔✔An award of up to$__may be paid to a person supplying inrormation that leads to
penalties against
a technician who is intentionally venting.
A.5000
B.10,000
C.25,000
D.50,000 - ✔✔B
✔✔Proper disposal of refrigerant cylinders is accomplished by_.
A.bleeding refrigerant to ambient air and throwing the cylinders into a trash dumpster
B.ensuring that all refrigerant is recovered and that the cylinders are rendered
useless,then
recycling the metal
C.refilling the cylinders a second time at an approved facility
D.giving the cylinders to a reclaiming facility for reuse - ✔✔B
, ✔✔Before a technician disposes of any appliance containing a CFC or HCFC
refrigerant,the
technician must.
A.recover the refrigerant
B.purge the appliance with nitrogen
C.flush the appliance with R-11
D.seal the appliance so no refrigerant can escape - ✔✔A
✔✔Blended refrigerants must be charged.
A.as a vapor
B.at very high temperatures
C.by weight into the high-pressure side of the system as a liquid
D.the same as any other refrigerant - ✔✔C
✔✔Blended refrigerants leak from a system_.
A.at a faster rate than other refrigerants
B.in uneven amounts due to different vapor pressures
C.at a slower rate than other refrigerants
D.only if the line breaks completely - ✔✔B
✔✔Refrigerant will migrate to the crankcase of a compressor because of the difference
in_between
the oil and the refrigerant.
A.vapor pressure
B.acidity
C.volume
D.density - ✔✔D
✔✔Recycling is to
A.remove refrigerant,in any condition,from a system and store it in an external
container,
without necessarily testing it or processing it in any way
B.process refrigerant to a level equal to new product specifications and test it to verify
purity
C.clean refrigerant by oil separation and single or multiple passes through moisture-
absorption
devices and then reuse the refrigerant
D.remove refrigerant from job site for disposal - ✔✔C
✔✔While servicing a system,a technician discovers that R-502 refrigerant was added to
a system with
R-22 refrigerant.The technician must.
A.vent the refrigerant since it cannot be reclaimed
B.recycle the refrigerant
C.recover the refrigerant into a separate tank
ANSWERS RATED A+
✔✔On a typical gauge manifold set,the high-pressure gauge is color-coded.
A.green
B.yellow
C.blue
D.red - ✔✔D
✔✔_is a safety precaution that must be followed.
A.Storing cylinders in direct sunlight at a temperature of more than 125
B.Storing recovered refrigerant in new DOT refrigerant cylinders
C.Shipping refrigerant cylinders in the horizontal position
D.Refraining from using oxygen to purge lines or pressurize systems - ✔✔D
✔✔Since 1995,supplies of CFC refrigerants for equipment servicing come from__.
A.recovery and recycling
B.solvent conversion
C.European chemical manufacturers
D.third world chemical manufacturers - ✔✔A
✔✔__results in violation of the Clean Air Act.
A.Using dry nitrogen to pressurize systems
B.Having a cylinder that is clearly marked with the chemical name
C.An accusation of misconduct
D.Failing to reach required evacuation levels betore opening or disposing of appliances
- ✔✔D
✔✔An award of up to$__may be paid to a person supplying inrormation that leads to
penalties against
a technician who is intentionally venting.
A.5000
B.10,000
C.25,000
D.50,000 - ✔✔B
✔✔Proper disposal of refrigerant cylinders is accomplished by_.
A.bleeding refrigerant to ambient air and throwing the cylinders into a trash dumpster
B.ensuring that all refrigerant is recovered and that the cylinders are rendered
useless,then
recycling the metal
C.refilling the cylinders a second time at an approved facility
D.giving the cylinders to a reclaiming facility for reuse - ✔✔B
, ✔✔Before a technician disposes of any appliance containing a CFC or HCFC
refrigerant,the
technician must.
A.recover the refrigerant
B.purge the appliance with nitrogen
C.flush the appliance with R-11
D.seal the appliance so no refrigerant can escape - ✔✔A
✔✔Blended refrigerants must be charged.
A.as a vapor
B.at very high temperatures
C.by weight into the high-pressure side of the system as a liquid
D.the same as any other refrigerant - ✔✔C
✔✔Blended refrigerants leak from a system_.
A.at a faster rate than other refrigerants
B.in uneven amounts due to different vapor pressures
C.at a slower rate than other refrigerants
D.only if the line breaks completely - ✔✔B
✔✔Refrigerant will migrate to the crankcase of a compressor because of the difference
in_between
the oil and the refrigerant.
A.vapor pressure
B.acidity
C.volume
D.density - ✔✔D
✔✔Recycling is to
A.remove refrigerant,in any condition,from a system and store it in an external
container,
without necessarily testing it or processing it in any way
B.process refrigerant to a level equal to new product specifications and test it to verify
purity
C.clean refrigerant by oil separation and single or multiple passes through moisture-
absorption
devices and then reuse the refrigerant
D.remove refrigerant from job site for disposal - ✔✔C
✔✔While servicing a system,a technician discovers that R-502 refrigerant was added to
a system with
R-22 refrigerant.The technician must.
A.vent the refrigerant since it cannot be reclaimed
B.recycle the refrigerant
C.recover the refrigerant into a separate tank
