EPA 608 Core · Ozone Depletion · Easy
Which refrigerant type contains chlorine and has the highest ODP?
Answer: C. CFCs like R-11
- AHFCs like R-134a
- BHFOs like R-1234yf
- CCFCs like R-11✓ Correct
- DHCs like R-290
Why C is right
CFCs contain chlorine and have the highest Ozone Depletion Potential.
More Core questions
- Which of the following is an HCFC refrigerant?
- What is the Ozone Depletion Potential (ODP) of HFO refrigerants?
- 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?
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.