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A2L Practice Test questions with accurate detailed answers
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Cylinders should be stored at temps under _________ - ✔✔125 F
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Refillable cylinders (recovery tanks) should not be filled beyond _____ of their maximum
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capacity - ✔✔80% || ||
A2L refrigerant cylinders are allowed to be shipped ________, fitting into standard storage
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racks. - ✔✔Horizontally
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When transporting refrigerant cylinders, industry best practice is to ensure that the relief
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valve is at the ________ - ✔✔12 o'clock postion
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When transporting flammable refrigerants, DOT requires that the vehicle be equipped with
|| || || || || || || || || || || ||
which type of fire extinguisher? - ✔✔Class B Dry Powder
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DOT prohibits smoking within ________ of flammable gases. - ✔✔25 feet
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When transporting flammable refrigerants, carrying the ________ for each refrigerant is also
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recommended. - ✔✔Safety Data Sheets (SDS)
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When working with flammable refrigerants, only __________ should be used. - ✔✔Spark
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Free Tools||
Equipment with flammable refrigerant requires a red colored marking on all process tubes
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and service connections. The color marking must extend _______ in both directions from
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service locations. - ✔✔One inch
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, 2
Flammable refrigerant tanks are marked with a ________, and a DOT flammable gas placard
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or decal. - ✔✔Red Stripe
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Minimizing or reducing the possibility of an ignition event or accident - ✔✔Mitigation
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Depending on installation, some systems that are charged with a flammable refrigerant may
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require an __________ as a mitigation step. - ✔✔indoor fan
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An ___________ behaves like a single compound refrigerant. - ✔✔Azeotropic refrigerant
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blend
A ____________ is a mixture of 2 or more refrigerants that can separate, or fractionate,
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into its original components. - ✔✔Zeotropic refrigerant blend
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An __________ designation is used when refrigerant blends are composed of the same
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refrigerants, but with different percentages of each. - ✔✔Uppercase letter (A,B,C)
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_____________ are highly flammable and require additional technician training for safe use.
|| || || || || || || || || || || ||
- ✔✔Hydrocarbon refrigerants
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_______________ of a refrigerant is the minimum concentration of a refrigerant that can|| || || || || || || || || || || || ||
propagate a flame through a consistent mixture of the refrigerant and air under specified
|| || || || || || || || || || || || || ||
test conditions. - ✔✔Lower Flammability Limit (LFL)
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Certain refrigerants, such as R-290 and R-600a are exempt from the _________ - ✔✔EPA's
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Recovery Mandate ||
Once a flammable refrigerant has been recovered and stored in a recovery cylinder, it must
|| || || || || || || || || || || || || || ||
be placed how far away from the work area before a system repair or installation is started?
|| || || || || || || || || || || || || || || ||
- ✔✔25 feet
|| || ||
A2L Practice Test questions with accurate detailed answers
|| || || || || || ||
Cylinders should be stored at temps under _________ - ✔✔125 F
|| || || || || || || || || ||
Refillable cylinders (recovery tanks) should not be filled beyond _____ of their maximum
|| || || || || || || || || || || || ||
capacity - ✔✔80% || ||
A2L refrigerant cylinders are allowed to be shipped ________, fitting into standard storage
|| || || || || || || || || || || || ||
racks. - ✔✔Horizontally
|| ||
When transporting refrigerant cylinders, industry best practice is to ensure that the relief
|| || || || || || || || || || || || ||
valve is at the ________ - ✔✔12 o'clock postion
|| || || || || || || ||
When transporting flammable refrigerants, DOT requires that the vehicle be equipped with
|| || || || || || || || || || || ||
which type of fire extinguisher? - ✔✔Class B Dry Powder
|| || || || || || || || ||
DOT prohibits smoking within ________ of flammable gases. - ✔✔25 feet
|| || || || || || || || || ||
When transporting flammable refrigerants, carrying the ________ for each refrigerant is also
|| || || || || || || || || || ||
recommended. - ✔✔Safety Data Sheets (SDS)
|| || || || || ||
When working with flammable refrigerants, only __________ should be used. - ✔✔Spark
|| || || || || || || || || || || ||
Free Tools||
Equipment with flammable refrigerant requires a red colored marking on all process tubes
|| || || || || || || || || || || || ||
and service connections. The color marking must extend _______ in both directions from
|| || || || || || || || || || || || ||
service locations. - ✔✔One inch
|| || || ||
, 2
Flammable refrigerant tanks are marked with a ________, and a DOT flammable gas placard
|| || || || || || || || || || || || ||
or decal. - ✔✔Red Stripe
|| || || || ||
Minimizing or reducing the possibility of an ignition event or accident - ✔✔Mitigation
|| || || || || || || || || || || ||
Depending on installation, some systems that are charged with a flammable refrigerant may
|| || || || || || || || || || || || ||
require an __________ as a mitigation step. - ✔✔indoor fan
|| || || || || || || || ||
An ___________ behaves like a single compound refrigerant. - ✔✔Azeotropic refrigerant
|| || || || || || || || || || ||
blend
A ____________ is a mixture of 2 or more refrigerants that can separate, or fractionate,
|| || || || || || || || || || || || || || ||
into its original components. - ✔✔Zeotropic refrigerant blend
|| || || || || || ||
An __________ designation is used when refrigerant blends are composed of the same
|| || || || || || || || || || || || ||
refrigerants, but with different percentages of each. - ✔✔Uppercase letter (A,B,C)
|| || || || || || || || || ||
_____________ are highly flammable and require additional technician training for safe use.
|| || || || || || || || || || || ||
- ✔✔Hydrocarbon refrigerants
|| ||
_______________ of a refrigerant is the minimum concentration of a refrigerant that can|| || || || || || || || || || || || ||
propagate a flame through a consistent mixture of the refrigerant and air under specified
|| || || || || || || || || || || || || ||
test conditions. - ✔✔Lower Flammability Limit (LFL)
|| || || || || ||
Certain refrigerants, such as R-290 and R-600a are exempt from the _________ - ✔✔EPA's
|| || || || || || || || || || || || || ||
Recovery Mandate ||
Once a flammable refrigerant has been recovered and stored in a recovery cylinder, it must
|| || || || || || || || || || || || || || ||
be placed how far away from the work area before a system repair or installation is started?
|| || || || || || || || || || || || || || || ||
- ✔✔25 feet
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