EPA 608 EXAM PRACTICE QUESTIONS 1-100 |COMPLETE STUDY
GUIDE WITH 100% ACCURATE QUESTIONS &ANSWERS ALREADY
GRADED A+
Ozone depletion is caused by _______ in HFC refrigerants. - (ANSWER)chlorine
CFCs and HCFCs ________ making them capable capable of reaching the stratospheric ozone layer. -
(ANSWER)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. - (ANSWER)100,000 ozone molecules
The stratospheric ozone layer protects us from _______. - (ANSWER)ultraviolet radiation from the sun
Which health effect increases from loss of the stratospheric ozone layer? - (ANSWER)cases of cataracts
or skin cancer
What proves that HCFCs are in the stratosphere? - (ANSWER)HCFCs found in air samples from the
stratosphere.
What makes HFC refrigerants damaging to the environment? - (ANSWER)They can have very high global
warming potentials.
_______ makes HFO refrigerants less flammable than HC refrigerants. - (ANSWER)Flourine
Which refrigerant contains chlorine? - (ANSWER)R-12
HFO refrigerants are miscible in _______ lubricants. - (ANSWER)POE lubricants
An example of HcFC refrigerant is: ______ - (ANSWER)R-123
, EPA 608 EXAM PRACTICE QUESTIONS 1-100 |COMPLETE STUDY
GUIDE WITH 100% ACCURATE QUESTIONS &ANSWERS ALREADY
GRADED A+
What is being done in the U.S. to stop damage to the stratospheric ozone layer? - (ANSWER)Eliminating
the use of CFCs and HCFCs refrigerants
EPA regulations require appliances to have _________. - (ANSWER)a service aperture or process hub
The release of any CFC, HCFC, or HFC refrigerant during _________ is illegal. - (ANSWER)theft of
equipment
____________ is the only EPA SNAP approved "drop in" replacement for
R-22. - (ANSWER)There are no direct drop-in refrigerant substitutes
Ester-based oils like POE can be mixed with ________. - (ANSWER)no other oils
What provides the cooling in a vapor compression refrigeration system? - (ANSWER)The vaporization of
the liquid refrigerant
An oil sample might be taken when __________. - (ANSWER)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. - (ANSWER)reclaiming
The EPA considers _________ the most effective for locating the general area of a small leak. -
(ANSWER)electronic or ultrasonic tester
GUIDE WITH 100% ACCURATE QUESTIONS &ANSWERS ALREADY
GRADED A+
Ozone depletion is caused by _______ in HFC refrigerants. - (ANSWER)chlorine
CFCs and HCFCs ________ making them capable capable of reaching the stratospheric ozone layer. -
(ANSWER)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. - (ANSWER)100,000 ozone molecules
The stratospheric ozone layer protects us from _______. - (ANSWER)ultraviolet radiation from the sun
Which health effect increases from loss of the stratospheric ozone layer? - (ANSWER)cases of cataracts
or skin cancer
What proves that HCFCs are in the stratosphere? - (ANSWER)HCFCs found in air samples from the
stratosphere.
What makes HFC refrigerants damaging to the environment? - (ANSWER)They can have very high global
warming potentials.
_______ makes HFO refrigerants less flammable than HC refrigerants. - (ANSWER)Flourine
Which refrigerant contains chlorine? - (ANSWER)R-12
HFO refrigerants are miscible in _______ lubricants. - (ANSWER)POE lubricants
An example of HcFC refrigerant is: ______ - (ANSWER)R-123
, EPA 608 EXAM PRACTICE QUESTIONS 1-100 |COMPLETE STUDY
GUIDE WITH 100% ACCURATE QUESTIONS &ANSWERS ALREADY
GRADED A+
What is being done in the U.S. to stop damage to the stratospheric ozone layer? - (ANSWER)Eliminating
the use of CFCs and HCFCs refrigerants
EPA regulations require appliances to have _________. - (ANSWER)a service aperture or process hub
The release of any CFC, HCFC, or HFC refrigerant during _________ is illegal. - (ANSWER)theft of
equipment
____________ is the only EPA SNAP approved "drop in" replacement for
R-22. - (ANSWER)There are no direct drop-in refrigerant substitutes
Ester-based oils like POE can be mixed with ________. - (ANSWER)no other oils
What provides the cooling in a vapor compression refrigeration system? - (ANSWER)The vaporization of
the liquid refrigerant
An oil sample might be taken when __________. - (ANSWER)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. - (ANSWER)reclaiming
The EPA considers _________ the most effective for locating the general area of a small leak. -
(ANSWER)electronic or ultrasonic tester
