EPA 608 Practice Test UPDATED ACTUAL
Exam Questions and CORRECT Answers
1. _____ has the higher ozone depletion potential (ODP). - CORRECT ANSWER CFC-
which is R-12
2. By what year was the use of halons completely phased out ? - CORRECT ANSWER Year
1994
3. What is believed to be the lifetime range of CFCs. - CORRECT ANSWER 20 to 100 years
4. Corrosion in refrigerant appliances from a pH level that is. - CORRECT ANSWER Acidic
5. Up to how many ozone molecules may be destroyed by exposure to one chlorine atom in the
stratosphere? - CORRECT ANSWER 100,000
6. What is indicated when during each vacuum decay test the pressure of the system increase to
greater than 0 pasig but stop at some point after creating the vacuum? - CORRECT
ANSWER The refrigerant could be trapped in the system
7. Which gas is used to pressure test for ( for leak checking) or blow debris out of the system,
recovering the refrigerant from a sealed system. - CORRECT ANSWER Nitrogen gas
8. Recovery rate will be _____ if your recovery unit does not have a sub cooling feature. -
CORRECT ANSWER Slower
9. Which of the following methods is the least effective at testing the general area of small leaks?
- CORRECT ANSWER Fluorescent indicator
10. A vacuum test can detect a leak. - CORRECT ANSWER False
Exam Questions and CORRECT Answers
1. _____ has the higher ozone depletion potential (ODP). - CORRECT ANSWER CFC-
which is R-12
2. By what year was the use of halons completely phased out ? - CORRECT ANSWER Year
1994
3. What is believed to be the lifetime range of CFCs. - CORRECT ANSWER 20 to 100 years
4. Corrosion in refrigerant appliances from a pH level that is. - CORRECT ANSWER Acidic
5. Up to how many ozone molecules may be destroyed by exposure to one chlorine atom in the
stratosphere? - CORRECT ANSWER 100,000
6. What is indicated when during each vacuum decay test the pressure of the system increase to
greater than 0 pasig but stop at some point after creating the vacuum? - CORRECT
ANSWER The refrigerant could be trapped in the system
7. Which gas is used to pressure test for ( for leak checking) or blow debris out of the system,
recovering the refrigerant from a sealed system. - CORRECT ANSWER Nitrogen gas
8. Recovery rate will be _____ if your recovery unit does not have a sub cooling feature. -
CORRECT ANSWER Slower
9. Which of the following methods is the least effective at testing the general area of small leaks?
- CORRECT ANSWER Fluorescent indicator
10. A vacuum test can detect a leak. - CORRECT ANSWER False
