EPA 608 Exam Practice Questions 1-100 with Complete
Solution
Ozone depletion is caused by _ in HCFC refrigerants - -Chlorine
CFCs and HCFCs _ making them capable of reaching the stratospheric ozone - -
do not dissolve in water or easily break down in the atmosphere
How many ozone molecules are destroyed by one chlorine atom - -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 and skin cancer
Which of the following proves that HCFCs are in the stratosphere - -HCFCs found
in air samples from the stratosphere
What makes HFC refrigerants damaging to the environment - -They have very
high global warming potentials
_ makes HFO refrigerants less flammable than HC refrigerants - -Fluorine
Which refrigerant contains chlorine - -R12
HFO refrigerants are miscible in _ lubricants. - -POE lubricants
, An example of an 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 stub
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 _ - -moisture and/or acid problems are
suspected
oil sludge formation or oil waxing is suspected
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
the EPA considers _ the most effective for locating the general area of a small leak -
-electronic or ultrasonic tester
Solution
Ozone depletion is caused by _ in HCFC refrigerants - -Chlorine
CFCs and HCFCs _ making them capable of reaching the stratospheric ozone - -
do not dissolve in water or easily break down in the atmosphere
How many ozone molecules are destroyed by one chlorine atom - -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 and skin cancer
Which of the following proves that HCFCs are in the stratosphere - -HCFCs found
in air samples from the stratosphere
What makes HFC refrigerants damaging to the environment - -They have very
high global warming potentials
_ makes HFO refrigerants less flammable than HC refrigerants - -Fluorine
Which refrigerant contains chlorine - -R12
HFO refrigerants are miscible in _ lubricants. - -POE lubricants
, An example of an 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 stub
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 _ - -moisture and/or acid problems are
suspected
oil sludge formation or oil waxing is suspected
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
the EPA considers _ the most effective for locating the general area of a small leak -
-electronic or ultrasonic tester
