ODP Cheat Sheet 2026

The 30 highest-yield ODP facts, distilled from real exam questions. Print it, save it as a PDF, or study it here — free, no sign-up.

1. In Ozone Layer Depletion, why is montreal protocol knowledge important for professional certification? → It demonstrates competence and ensures practitioners meet established standards
2. What is the primary application of halon compounds that makes their phase-out particularly challenging? → Fire suppression in critical facilities
3. What is a significant environmental drawback of HFC-227ea (FM-200) as a halon replacement? → It is a potent greenhouse gas with a very high Global Warming Potential (GWP)
4. What is the maximum allowable leak rate for comfort cooling equipment with more than 50 lbs of refrigerant under EPA Section 608? → 30% per year
5. The ozone layer is present in which of the following layers of the earth: → Stratosphere
6. What is the correct order of priority in Ozone Layer Depletion patient care? → Airway, Breathing, Circulation (ABC)
7. Which organization sets the purity standard (ARI 700) that reclaimed refrigerant must meet before it can be resold? → Air-Conditioning, Heating, and Refrigeration Institute (AHRI)
8. In Ozone Layer Depletion, what is homeostasis? → The body's ability to maintain a stable internal environment despite external changes
9. After recovering refrigerant, to what vacuum level must a technician evacuate a system before recharging, for systems with more than 200 lbs of refrigerant? → 4 inches Hg
10. Halons used in fire extinguishers contain ______ atoms: → Bromine
11. What is the primary objective of uv radiation effects in Ozone Layer Depletion? → To ensure competence and proficiency in core uv radiation effects concepts
12. How do halons suppress fires at the molecular level? → By interrupting the chemical chain reactions that sustain combustion
13. Which approach is most effective for mastering cfcs and hcfcs in Ozone Layer Depletion? → Combining theoretical study with practical application and regular review
14. What is a best practice in Ozone Layer Depletion montreal protocol? → A method or technique recognized as superior based on evidence and expert consensus
15. Which skill is most critical for success in ODP advanced concepts? → Analytical thinking and evidence-based decision making
16. Which of the following is the most widely deployed halon 1301 alternative in total-flooding fire suppression systems? → HFC-227ea (FM-200)
17. What is a controlled variable in an experiment related to Ozone Layer Depletion? → A factor that is kept constant throughout the experiment
18. In Ozone Layer Depletion, what role does continuing education play in alternative chemicals? → To keep professionals current with evolving standards, technologies, and best practices
19. What is a best practice in Ozone Layer Depletion alternative chemicals? → A method or technique recognized as superior based on evidence and expert consensus
20. Which organization coordinates the international halon banking network to ensure recovered halon reaches critical users who still need it? → The Halon Alternatives Research Corporation (HARC) working with UNEP
21. Which industry standard governs the design and testing of refrigerant recovery and recycling equipment used in the HVAC/R industry? → UL 1963 / AHRI 740
22. The Montreal Protocol treaty has been amended to ban CFC production after year_______ in the developed countries: → 1996
23. In Ozone Layer Depletion, what role does continuing education play in uv radiation effects? → To keep professionals current with evolving standards, technologies, and best practices
24. What is the primary function of the mitochondria in cells relevant to Ozone Layer Depletion? → To produce energy (ATP) through cellular respiration
25. In Ozone Layer Depletion, what does pH measure? → The acidity or alkalinity of a solution on a scale of 0 to 14
26. What is a best practice in Ozone Layer Depletion uv radiation effects? → A method or technique recognized as superior based on evidence and expert consensus
27. The following form(s) of oxygen is (are) involved in the ozone-oxygen cycle. → Triatomic oxygen (O3)
28. What is a controlled variable in an experiment related to Ozone Layer Depletion? → A factor that is kept constant throughout the experiment
29. Which approach is most effective for mastering alternative chemicals in Ozone Layer Depletion? → Combining theoretical study with practical application and regular review
30. In Ozone Layer Depletion, what role does continuing education play in cfcs and hcfcs? → To keep professionals current with evolving standards, technologies, and best practices