EPA 608 Core · Ozone Depletion · Medium
What is the Ozone Depletion Potential (ODP) of HFO refrigerants?
Answer: B. Zero
- A1.0
- BZero✓ Correct
- C0.5
- D100
Why B is right
HFOs (Hydrofluoroolefins) do not contain chlorine, so their ODP is strictly zero.
More Core questions
- What baseline refrigerant is used to establish ODP with a value of 1.0?
- What baseline gas is used to establish Global Warming Potential (GWP)?
- Where is stratospheric ozone located?
- Why is stratospheric ozone vital for life on Earth?
- Which element in CFCs and HCFCs is responsible for ozone depletion?
Go deeper with the study guide EPA 608 Core Exam: Study Guide for 2026, try the free 10-question test or browse all EPA 608 practice questions.
A practice question written for study, checked against 40 CFR Part 82, Subpart F. It is not an official EPA exam question, and this site is not affiliated with the U.S. EPA.