Information on CORE Practice Test 5
- This practice test is free. Take it as often as you like.
- Contains 12 questions.
- Pressing the submit button immediately returns your resulting score.
- Passing score is 70%.
- Correct answer information is provided for questions answered incorrectly.
- Good luck!
| Trade Category: | HVACR |
| Test Category: | EPA 608 Certification |
| Test Subject: | Core |
| Test Number: | 5 of 5 |
| Questions on Test: | 12 |
| Passing Score: | 70% |
#1. Refrigerant entering the compressor of a refrigeration system is a
Correct answer is D: superheated vapor.
Refrigerant entering the compressor of a refrigeration system is a superheated vapor.
#2. What is being done in the U.S. to stop damage to the stratospheric ozone layer?
Correct answer is D: All of the above.
#3. The type of oil that is most commonly used in stationary refrigeration applications with HFC-134a refrigerant is
Correct answer is A: ester oil.
The type of oil that is most commonly used in stationary refrigeration applications with HFC-134a refrigerant is ester oil.
#4. The term used to describe the fact that a refrigerant blend has a range of boiling or condensing points at a constant pressure is
Correct answer is D: temperature glide.
The term used to describe the fact that a refrigerant blend has a range of boiling or condensing points at a constant pressure is temperature glide.
#5. Which refrigerant contains a CFC?
Correct answer is A: R-12
- R-12 CFC
- R-22 HCFC
- R-134a HFC
- R-410a HFC
#6. Under EPA’s regulations, what standard must reclaimed refrigerant meet before it can be resold?
Correct answer is A: ARI 700
Under EPA’s regulations, what standard must reclaimed refrigerant meet before it can be resold? ARI 700
NT Note:
ARI 700 is a standard or publication by the Air Conditioning Heating and Refrigeration Institute and is the standard specification for refrigerants.
#7. An example of an HFC refrigerant is
Correct answer is A: R-134a
- R-134a HFC
- R-123 HCFC
- R-22 HCFC
- R-12 CFC
#8. It is illegal to
Correct answer is C: knowingly release any refrigerant during the service maintenance, repair. or disposal of appliances with the exception of de minimis releases.
It is illegal to knowingly release any refrigerant during the service maintenance, repair. or disposal of appliances with the exception of de minimis releases.
#9. Which type of refrigerant is the most harmful to stratospheric ozone?
Correct answer is A: CFC
Which type of refrigerant is the most harmful to stratospheric ozone? CFC refrigerant.
#10. Refrigerant that enters the expansion or throttling device, also known as the metering device, is a
Correct answer is D: liquid.
Refrigerant that enters the expansion or throttling device, also known as the metering device, is a liquid.
#11. Which of the following statements would be considered good service practices for conserving refrigerant?
Correct answer is D: All of the above.
#12. Under the EPA’s “safe disposal requirement”, the person responsible for making sure that the refrigerant has been removed from household refrigerators before they are disposed of is the
Correct answer is A: final person in the disposal chain.
Under the EPA’s “safe disposal requirement”, the person responsible for making sure that the refrigerant has been removed from household refrigerators before they are disposed of is the final person in the disposal chain.
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