CFC Core Test Study 2023- 30
Questions and Answers
As of what date did it become unlawful to release Class 1 and
Class 2 refrigerants to the atmosphere? - -July 1, 1992
-What is the ozone layer and why is it important to us on Earth? -
-Protective shield for Earth from the sun's harmful ultraviolet
(UV) rays in the stratosphere layer that extends about 6 to
30miles above earth
-The atom found in CFC and HCFC in the atmosphere that
destroys ozone in the stratosphere is? - -Chlorine
-What is an ozone molecule made of? - -Three oxygen atoms (03)
-Which refrigerant is a CFC? - -R-12
-What is the name of the atom that attacks ozone molecules? - -
Chlorine and bromine atoms emitted into the atmosphere
-Which refrigerant is a HFC? - -R-134a
-Describe how one Chlorine atom can destroy 100,000 ozone
molecules. - -Chlorine releases one of the oxygen atoms and
forms two 02 oxygen molecules, leaving the chlorine molecule
free to attack another ozone molecule and repeat the process.
-Which refrigerant contains no chlorine? - -R-134a
-Name the refrigerants types that belong to CFCs, HCFCs, and
HFCs - -CFC R-11, R-12, R-500
HCFC R-22 R-123
HFC R-134a
-The rule of thumb for refilling approved cylinders is a maximum
of ____percent liquid? - -80%
Questions and Answers
As of what date did it become unlawful to release Class 1 and
Class 2 refrigerants to the atmosphere? - -July 1, 1992
-What is the ozone layer and why is it important to us on Earth? -
-Protective shield for Earth from the sun's harmful ultraviolet
(UV) rays in the stratosphere layer that extends about 6 to
30miles above earth
-The atom found in CFC and HCFC in the atmosphere that
destroys ozone in the stratosphere is? - -Chlorine
-What is an ozone molecule made of? - -Three oxygen atoms (03)
-Which refrigerant is a CFC? - -R-12
-What is the name of the atom that attacks ozone molecules? - -
Chlorine and bromine atoms emitted into the atmosphere
-Which refrigerant is a HFC? - -R-134a
-Describe how one Chlorine atom can destroy 100,000 ozone
molecules. - -Chlorine releases one of the oxygen atoms and
forms two 02 oxygen molecules, leaving the chlorine molecule
free to attack another ozone molecule and repeat the process.
-Which refrigerant contains no chlorine? - -R-134a
-Name the refrigerants types that belong to CFCs, HCFCs, and
HFCs - -CFC R-11, R-12, R-500
HCFC R-22 R-123
HFC R-134a
-The rule of thumb for refilling approved cylinders is a maximum
of ____percent liquid? - -80%
