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A2L Exam newest 2026 with accurate detailed solutions
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Which of the following refrigerants has the lowest global warming potential?
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A. R-32
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B. R-410A
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C. R-454B
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D. R-744 - ✔✔D. R-744
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A2L refrigerants have a flammability potential that is higher than;
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A. A1 refrigerants
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B. A2 refrigerants
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C. A3 refrigerants
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D. B2 refrigerants - ✔✔A. A1 refrigerants
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A metric that is used to measure a refrigerant's environmental impact as a greenhouse gas
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is;
A. Global Warming Potential(GWP)
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B. Heat of Combustion(HOC)
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C. Minimum Ignition Energy(MIE)
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D. Ozone depletion potential(ODP) - ✔✔A. Global Warming Potential(GWP)
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A refrigerant blend behaves like a single compound refrigerant is called a(n);
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, 2
A. Azeotropic blend
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B. Near azeotropic refrigerant mixture (NARM)
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C. Non-flammable refrigerant blend
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D. Zeotropic blend - ✔✔A. Azeotropic blend
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When one or more of the refrigerants in a bland leaks at a faster rate than other
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refrigerants in the blend; || || ||
A. Fractionation can occur
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B. It is no longer considered zeotropic
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C. The remaining blend should be considered an A2L
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D. The refrigerant will no longer condense to liquid - ✔✔A. Fractionation can occur
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Which of the following refrigerants is classified as an A3 refrigerant?
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A. R-32
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B. R-600a
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C. R-717
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D. R-744 - ✔✔B. R-600a
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A refrigerant oil that is hygroscopic will;
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A. Absorb moisture
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B. Condense in the compressor
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C. Reject heat and moisture
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D. Vaporize at low temperatures - ✔✔A. Absorb moisture
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A2L Exam newest 2026 with accurate detailed solutions
|| || || || || || ||
Which of the following refrigerants has the lowest global warming potential?
|| || || || || || || || || ||
A. R-32
||
B. R-410A
||
C. R-454B
||
D. R-744 - ✔✔D. R-744
|| || || ||
A2L refrigerants have a flammability potential that is higher than;
|| || || || || || || || ||
A. A1 refrigerants
|| ||
B. A2 refrigerants
|| ||
C. A3 refrigerants
|| ||
D. B2 refrigerants - ✔✔A. A1 refrigerants
|| || || || || ||
A metric that is used to measure a refrigerant's environmental impact as a greenhouse gas
|| || || || || || || || || || || || || || ||
is;
A. Global Warming Potential(GWP)
|| || ||
B. Heat of Combustion(HOC)
|| || ||
C. Minimum Ignition Energy(MIE)
|| || ||
D. Ozone depletion potential(ODP) - ✔✔A. Global Warming Potential(GWP)
|| || || || || || || ||
A refrigerant blend behaves like a single compound refrigerant is called a(n);
|| || || || || || || || || || ||
, 2
A. Azeotropic blend
|| ||
B. Near azeotropic refrigerant mixture (NARM)
|| || || || ||
C. Non-flammable refrigerant blend
|| || ||
D. Zeotropic blend - ✔✔A. Azeotropic blend
|| || || || || ||
When one or more of the refrigerants in a bland leaks at a faster rate than other
|| || || || || || || || || || || || || || || || ||
refrigerants in the blend; || || ||
A. Fractionation can occur
|| || ||
B. It is no longer considered zeotropic
|| || || || || ||
C. The remaining blend should be considered an A2L
|| || || || || || || || ||
D. The refrigerant will no longer condense to liquid - ✔✔A. Fractionation can occur
|| || || || || || || || || || || || ||
Which of the following refrigerants is classified as an A3 refrigerant?
|| || || || || || || || || ||
A. R-32
||
B. R-600a
||
C. R-717
||
D. R-744 - ✔✔B. R-600a
|| || || ||
A refrigerant oil that is hygroscopic will;
|| || || || || ||
A. Absorb moisture
|| || ||
B. Condense in the compressor
|| || || || ||
C. Reject heat and moisture
|| || || || ||
D. Vaporize at low temperatures - ✔✔A. Absorb moisture
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