VERIFIED ANSWERS |LATEST 2026/2027
UPDATE|GRADED A+
Question 1
What units does a compound pressure gauge for the low side of the system measure
pressure in?
A. Psia
B. Torrs and microns
C. Psig and inches of mercury
D. Psia and microns
CORRECT ANSWER
C. Psig and inches of mercury
Question 2
When transporting cylinders containing used refrigerant, DOT requires that you:
Question 3
A. Use OSHA-approved containers.
B. Attach DOT classification tags.
C. Ship by EPA certified carrier.
D. Do all of the above.
CORRECT ANSWER
B. Attach DOT classification tags.
1
@THE STUDY VAULT
, Question 4
What is being done in the U.S. to stop damage to the stratospheric ozone layer?
A. Using natural gas instead of coal to generate electricity.
B. Phasing out the use of chlorofluorocarbons and hydrochlorofluorocarbons.
C. Enforcing strict emission requirements on incinerators.
D. Increasing the energy efficiency of air conditioners.
CORRECT ANSWER
B. Phasing out the use of chlorofluorocarbons and hydrochlorofluorocarbons.
Question 5
Refrigerant cylinders should be all of the following, EXCEPT:
A. Be free of rust and damage.
B. Be filled to 95% of capacity.
C. Be labeled.
D. Be secure.
CORRECT ANSWER
B. Be filled to 95% of capacity
Question 6
Which of the following refrigerants has the lowest global warming potential?
2
@THE STUDY VAULT
UPDATE|GRADED A+
Question 1
What units does a compound pressure gauge for the low side of the system measure
pressure in?
A. Psia
B. Torrs and microns
C. Psig and inches of mercury
D. Psia and microns
CORRECT ANSWER
C. Psig and inches of mercury
Question 2
When transporting cylinders containing used refrigerant, DOT requires that you:
Question 3
A. Use OSHA-approved containers.
B. Attach DOT classification tags.
C. Ship by EPA certified carrier.
D. Do all of the above.
CORRECT ANSWER
B. Attach DOT classification tags.
1
@THE STUDY VAULT
, Question 4
What is being done in the U.S. to stop damage to the stratospheric ozone layer?
A. Using natural gas instead of coal to generate electricity.
B. Phasing out the use of chlorofluorocarbons and hydrochlorofluorocarbons.
C. Enforcing strict emission requirements on incinerators.
D. Increasing the energy efficiency of air conditioners.
CORRECT ANSWER
B. Phasing out the use of chlorofluorocarbons and hydrochlorofluorocarbons.
Question 5
Refrigerant cylinders should be all of the following, EXCEPT:
A. Be free of rust and damage.
B. Be filled to 95% of capacity.
C. Be labeled.
D. Be secure.
CORRECT ANSWER
B. Be filled to 95% of capacity
Question 6
Which of the following refrigerants has the lowest global warming potential?
2
@THE STUDY VAULT