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EPA Universal Exam Questions & Answers.
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EPA Universal Exam Questions & Answers.
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EPA Universal Exam Questions & AnswersWhich refrigerants contain the most chlorine? - ANS-CFC.
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R11,R12,R500.
As of what date did it become unlawful to intentionally release Class I and Class II
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refrigerants to the atmosphere? - ANS-July 1 1992.
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Which refrigerants have the lowest ozone depletion potential (ODP)? - ANS-HFC.
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R134a.
The molecule found in CFC and HCFC refrigerants that destroys ozone in the
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stratosphere is: - ANS-Chlorine.
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Stratospheric ozone consists of: - ANS-Three oxygen atoms.
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Stratospheric ozone depletion is a___problem: n n n n
a. American
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b. Global
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c. Local
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d. United Nations - ANS-Global.
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The gas in the stratosphere that protects us from ultraviolet radiation is:
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a. Radon.
n
b. Sulfur Dioxide.
n n
c. Carbon Dioxide.
n n
d. Ozone - ANS-Ozone.
n n n
Which refrigerant is a CFC?
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a. R-134a.
n
b. R-123.
n n
c. R-22.
n n
d. R-12. - ANS-R12.
n n n
Which refrigerant is an HCFC?
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a. R-134a.
n
b. R-123.
n
c. R-22.
n
d. B and C above. - ANS-D.
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R123.
R22.
, Which refrigerant is an HFC?n n n n n
a. R-134a.
n
b. R-123.
n n
c. R-22.
n n
d. R-12. - ANS-R134a.
n n n
Which refrigerant contains no chlorine?
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a. R-134a.
n
b. R-123.
n n
c. R-22.
n n
d. R-12. - ANS-R134a.
n n n
The molecule found in the stratosphere that indicates stratospheric ozone depletion is
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taking place is:
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a. Carbon dioxide.
n n
b. Carbon monoxide.
n n
c. Chlorine monoxide.
n n
d. Radon. - ANS-A.
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Chlorine monoxide. n
The following actions would violate the Clean Air Act (CAA):
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a. Knowingly releasing Class I and Class II substances.
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b. Failing to keep or falsifying required records.
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c. Failing to reach the required evacuation levels before opening a system to.
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the atmosphere for service.
n n n
d. All of the above. - ANS-D.
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All of the above.
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One time (disposable) refrigerant cylinders are used for:
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a. Sending refrigerant for reclaim.
n n n n
b. Containing recovered refrigerant.
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c. Recycling refrigerant.
n n
d. Virgin refrigerant. - ANS-D.
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Virgin refrigerant. n
The rule of thumb for refilling approved cylinders is a maximum of [ ] percent liquid?
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a. 60%.
n
b. 70%.
n
c. 80%.
n
d. 90%. - ANS-C.
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80%
The time it takes to properly evacuate and dehydrate a system prior to charging with
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refrigerant is determined by the:
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a. Total volume of the system.
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b. Amount of non-condensable(s) (moisture) in the system.
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