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EPA 608 Exam 100 Questions with verified detailed answers
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Ozone depletion is caused by _______ in HFC refrigerants. - ✔✔chlorine
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CFCs and HCFCs ________ making them capable capable of reaching the stratospheric ozone
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layer. - ✔✔do not dissolve in water or easily break down in the atmosphere
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According to the Rolanda-Molina theory, ________ are destroyed by each chlorine atom in
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the stratosphere. - ✔✔100,000 ozone molecules
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The stratospheric ozone layer protects us from _______. - ✔✔ultraviolet radiation from the
|| || || || || || || || || || || || ||
sun
Which health effect increases from loss of the stratospheric ozone layer? - ✔✔cases of
|| || || || || || || || || || || || || ||
cataracts or skin cancer || || ||
What proves that HCFCs are in the stratosphere? - ✔✔HCFCs found in air samples from the
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stratosphere.
What makes HFC refrigerants damaging to the environment? - ✔✔They can have very high
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global warming potentials.
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_______ makes HFO refrigerants less flammable than HC refrigerants. - ✔✔Flourine
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Which refrigerant contains chlorine? - ✔✔R-12
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HFO refrigerants are miscible in _______ lubricants. - ✔✔POE lubricants
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, 2
An example of HcFC refrigerant is: ______ - ✔✔R-123
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What is being done in the U.S. to stop damage to the stratospheric ozone layer? -
|| || || || || || || || || || || || || || || ||
✔✔Eliminating the use of CFCs and HCFCs refrigerants || || || || || || ||
EPA regulations require appliances to have _________. - ✔✔a service aperture or process
|| || || || || || || || || || || || ||
hub
The release of any CFC, HCFC, or HFC refrigerant during _________ is illegal. - ✔✔theft of
|| || || || || || || || || || || || || || || ||
equipment
____________ is the only EPA SNAP approved "drop in" replacement for
|| || || || || || || || || ||
|| R-22. - ✔✔There are no direct drop-in refrigerant substitutes
|| || || || || || || ||
Ester-based oils like POE can be mixed with ________. - ✔✔no other oils
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What provides the cooling in a vapor compression refrigeration system? - ✔✔The
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vaporization of the liquid refrigerant || || || ||
An oil sample might be taken when __________. - ✔✔a. moisture and/or acid problems are
|| || || || || || || || || || || || || ||
suspected
||
b. oil sludge formation or oil waxing is suspected
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c. residual acidic oil from a burn-out is suspected of contaminating the replacement oil
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________ returns refrigerant to new product specifications and requires chemical analysis to
|| || || || || || || || || || ||
verify the purity to AHRI-700 standards. - ✔✔reclaiming
|| || || || || || || ||
EPA 608 Exam 100 Questions with verified detailed answers
|| || || || || || || ||
Ozone depletion is caused by _______ in HFC refrigerants. - ✔✔chlorine
|| || || || || || || || || ||
CFCs and HCFCs ________ making them capable capable of reaching the stratospheric ozone
|| || || || || || || || || || || ||
layer. - ✔✔do not dissolve in water or easily break down in the atmosphere
|| || || || || || || || || || || || || ||
According to the Rolanda-Molina theory, ________ are destroyed by each chlorine atom in
|| || || || || || || || || || || || ||
the stratosphere. - ✔✔100,000 ozone molecules
|| || || || ||
The stratospheric ozone layer protects us from _______. - ✔✔ultraviolet radiation from the
|| || || || || || || || || || || || ||
sun
Which health effect increases from loss of the stratospheric ozone layer? - ✔✔cases of
|| || || || || || || || || || || || || ||
cataracts or skin cancer || || ||
What proves that HCFCs are in the stratosphere? - ✔✔HCFCs found in air samples from the
|| || || || || || || || || || || || || || || ||
stratosphere.
What makes HFC refrigerants damaging to the environment? - ✔✔They can have very high
|| || || || || || || || || || || || || ||
global warming potentials.
|| ||
_______ makes HFO refrigerants less flammable than HC refrigerants. - ✔✔Flourine
|| || || || || || || || || ||
Which refrigerant contains chlorine? - ✔✔R-12
|| || || || ||
HFO refrigerants are miscible in _______ lubricants. - ✔✔POE lubricants
|| || || || || || || || ||
, 2
An example of HcFC refrigerant is: ______ - ✔✔R-123
|| || || || || || || ||
What is being done in the U.S. to stop damage to the stratospheric ozone layer? -
|| || || || || || || || || || || || || || || ||
✔✔Eliminating the use of CFCs and HCFCs refrigerants || || || || || || ||
EPA regulations require appliances to have _________. - ✔✔a service aperture or process
|| || || || || || || || || || || || ||
hub
The release of any CFC, HCFC, or HFC refrigerant during _________ is illegal. - ✔✔theft of
|| || || || || || || || || || || || || || || ||
equipment
____________ is the only EPA SNAP approved "drop in" replacement for
|| || || || || || || || || ||
|| R-22. - ✔✔There are no direct drop-in refrigerant substitutes
|| || || || || || || ||
Ester-based oils like POE can be mixed with ________. - ✔✔no other oils
|| || || || || || || || || || || ||
What provides the cooling in a vapor compression refrigeration system? - ✔✔The
|| || || || || || || || || || || ||
vaporization of the liquid refrigerant || || || ||
An oil sample might be taken when __________. - ✔✔a. moisture and/or acid problems are
|| || || || || || || || || || || || || ||
suspected
||
b. oil sludge formation or oil waxing is suspected
|| || || || || || || ||
c. residual acidic oil from a burn-out is suspected of contaminating the replacement oil
|| || || || || || || || || || || || ||
________ returns refrigerant to new product specifications and requires chemical analysis to
|| || || || || || || || || || ||
verify the purity to AHRI-700 standards. - ✔✔reclaiming
|| || || || || || || ||
