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ASE Heating and Air Conditioning Practice Test
Multiple Choice
ASE Heating and Air Conditioning
Multiple Choice Practice Test
Question 1 of 3
54% Get this Question Right
Which of the following is a true statement about R134a?
A
It is harmful to the ozone
B
it operates at lower pressures than R12
C
It requires a different dessicant than R12
D
It mixes with mineral oil
Desiccants are not universal and different types must be used with differetn refrigerants and lubricating oils. When a system is retrofitted the replacement drier or accumulator has XH7 or XH9 desiccant.
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