EPA 608 Core · Ozone Depletion · Medium
What baseline refrigerant is used to establish ODP with a value of 1.0?
Answer: A. CFC-11
- ACFC-11✓ Correct
- BHCFC-22
- CHFC-134a
- DHFO-1234yf
Why A is right
CFC-11 is the baseline reference gas for measuring Ozone Depletion Potential.
More Core questions
- 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?
- How does chlorine destroy ozone?
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.