11.3 Practice Exam: Core Section
Key Takeaways
- Core practice covers: ozone science, refrigerant types, venting rules, safety, Three Rs, AIM Act
- Most exam questions test factual recall and application of specific regulations
- Pay attention to precise numbers, dates, and definitions
- Read all answer choices carefully — look for qualifiers like "always," "never," "only"
- When in doubt on the exam, choose the answer that prioritizes environmental protection and safety
Last updated: March 2026
11.3 Practice Exam: Core Section
Test your knowledge with these Core section practice questions. These cover the most commonly tested topics and mirror the format of the actual EPA 608 exam.
Test Your Knowledge
Which refrigerant family has ZERO ozone depletion potential?
A
B
C
D
Test Your Knowledge
What must be done before opening any refrigeration system for service?
A
B
C
D
Test Your Knowledge
The Montreal Protocol primarily addresses:
A
B
C
D
Test Your Knowledge
R-12 is classified as which type of substance?
A
B
C
D
Test Your Knowledge
POE oil used in HFC systems is "hygroscopic." What does this mean?
A
B
C
D
Test Your Knowledge
What is the function of a filter-drier in a refrigeration system?
A
B
C
D
Test Your Knowledge
Which of the following is a de minimis release permitted under Section 608?
A
B
C
D
Test Your Knowledge
What is the difference between "phaseout" and "phasedown"?
A
B
C
D