EPA 608 TEST FINAL EXAM QUESTIONS AND
ANSWERS (VERIFIED AND WELL DETAILED
ANSWERS) LATEST UPDATE 2024/2025
As of what date did it become unlawful to release Class 1 and Class II
refrigerants to the atmosphere? - ...(ANSWERS)....July 1, 1992
What is the ozone layer and why is it important to us on Earth? -
...(ANSWERS)....Protective shield for Earth from the sun's harmful ultraviolent
(UV)
rays in the stratosphere layer that extends about 6 to 30 miles above
earth
The atom found in CFC and HCFC refrigerants that destroys ozone in the
stratosphere is? - ...(ANSWERS)....Chlorine
What is an ozone molecule made of? - ...(ANSWERS)....Three oxygen atoms (O3)
Which refrigerant is a CFC? - ...(ANSWERS)....R-12
What is the name of the atom that attacks ozone molecules? -
...(ANSWERS)....Chlorine and bromine atoms emitted into the atmosphere
Which refrigerant is a HFC? - ...(ANSWERS)....R-134A
, Describe how one Chlorine atom can destroy 100,000 ozone molecules. -
...(ANSWERS)....Chlorine releases one of the oxygen atoms and forms two O2
oxygen
molecules, leaving the chlorine molecule free to attack another
ozone molecule and repeat the process.
Which refrigerant contains no chlorine? - ...(ANSWERS)....R-134A
Name the refrigerant types that belong to CFCs, HCFCs and HFCs -
...(ANSWERS)....CFC R-11, R-12, R-500
HCFC R-22, R-123
HFC R-134a
(All of the above)
The rule of thumb for refilling approved cylinders is a maximum of ___ percent
liquid? - ...(ANSWERS)....80%
2.What do the letters in "HCFC" stand for? -
...(ANSWERS)....hydrochlorofluorocarbons
To recover refrigerant is to? - ...(ANSWERS)....Remove a refrigerant in any
condition from a system in either an
active or passive manner, and store it in an external container
ANSWERS (VERIFIED AND WELL DETAILED
ANSWERS) LATEST UPDATE 2024/2025
As of what date did it become unlawful to release Class 1 and Class II
refrigerants to the atmosphere? - ...(ANSWERS)....July 1, 1992
What is the ozone layer and why is it important to us on Earth? -
...(ANSWERS)....Protective shield for Earth from the sun's harmful ultraviolent
(UV)
rays in the stratosphere layer that extends about 6 to 30 miles above
earth
The atom found in CFC and HCFC refrigerants that destroys ozone in the
stratosphere is? - ...(ANSWERS)....Chlorine
What is an ozone molecule made of? - ...(ANSWERS)....Three oxygen atoms (O3)
Which refrigerant is a CFC? - ...(ANSWERS)....R-12
What is the name of the atom that attacks ozone molecules? -
...(ANSWERS)....Chlorine and bromine atoms emitted into the atmosphere
Which refrigerant is a HFC? - ...(ANSWERS)....R-134A
, Describe how one Chlorine atom can destroy 100,000 ozone molecules. -
...(ANSWERS)....Chlorine releases one of the oxygen atoms and forms two O2
oxygen
molecules, leaving the chlorine molecule free to attack another
ozone molecule and repeat the process.
Which refrigerant contains no chlorine? - ...(ANSWERS)....R-134A
Name the refrigerant types that belong to CFCs, HCFCs and HFCs -
...(ANSWERS)....CFC R-11, R-12, R-500
HCFC R-22, R-123
HFC R-134a
(All of the above)
The rule of thumb for refilling approved cylinders is a maximum of ___ percent
liquid? - ...(ANSWERS)....80%
2.What do the letters in "HCFC" stand for? -
...(ANSWERS)....hydrochlorofluorocarbons
To recover refrigerant is to? - ...(ANSWERS)....Remove a refrigerant in any
condition from a system in either an
active or passive manner, and store it in an external container
