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
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.
How to Use This Practice Set
Treat these questions as an active-recall checkpoint for Practice Exam: Core Section, not as a reading assignment. Answer the full set before looking at explanations, then mark each miss by skill area, rule, or service name. For every wrong answer, write the reason the correct option wins and why one tempting distractor fails. That habit matters because real exam questions often test the same concept with different wording. If you miss several questions from the same domain, pause and reread that chapter before continuing.
A strong final review loop is: timed attempt, explanation review, targeted reread, then a second attempt after a short break.
Review Routine
After you finish this set, make a three-column log: topic, missed rule, and the clue you should have noticed. Retake only missed questions the next day, then mix them with new questions so you do not memorize order. For calculations or scenario rules, say the first step aloud before choosing an option; that prevents rushing into a familiar but wrong answer.
Which refrigerant family has ZERO ozone depletion potential?
What must be done before opening any refrigeration system for service?
The Montreal Protocol primarily addresses:
R-12 is classified as which type of substance?
POE oil used in HFC systems is "hygroscopic." What does this mean?
What is the function of a filter-drier in a refrigeration system?
Which of the following is a de minimis release permitted under Section 608?
What is the difference between "phaseout" and "phasedown"?