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Study MCQ
Refrigeration and Air Conditioning Technician
REFRIGERANT AND INSULATION
Set 1
Set 1
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Q10237
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Which property is desirable for an ideal refrigerant?
A
High boiling point
B
High freezing point
C
High specify volume
D
High latent heat value
Q10238
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What is the category of R 290 refrigerant?
A
Halocarbons
B
Azeotropes
C
Hydrocarbons
D
Organic compounds
Q10239
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What type of heat is absorbed by primary refrigerant?
A
Total heat
B
Latent heat
C
Specific heat
D
Sensible heat
Q10240
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How much is the maximum capacity of refrigerant to be filled in a returnable service cylinder?
A
Up to 95%
B
Up to 90%
C
Up to 85%
D
Up to 80%
Q10241
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What is the desirable property of POE lubricant?
A
Hygroscopic
B
Miscible with HFCs
C
Forms acid with moisture
D
Toxic gas produced during brazing
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