EPA 608 Core · Safety · Hard
What can happen if CFC or HCFC refrigerants are exposed to high heat or open flames?
Answer: C. They can break down into phosgene and acids.
- AThey become highly flammable and explode.
- BThey turn into safe, breathable oxygen.
- CThey can break down into phosgene and acids.✓ Correct
- DThey instantly freeze the surrounding air.
Why C is right
High heat breaks down chlorinated refrigerants into extremely toxic phosgene gas and strong acids.
More Core questions
- What happens when refrigerant vapor is inhaled in large quantities?
- Which ASHRAE safety classification applies to mildly flammable refrigerants like R-32 and R-454B that are replacing high-GWP HFCs under the AIM Act?
- Under ASHRAE Standard 34, what does an A2L refrigerant classification indicate?
- Under ASHRAE Standard 34, what does 'A1' signify?
- Under ASHRAE 34, what does the 'B' signify in B2L?
Go deeper with the study guide A2L Refrigerants and the R-410A Transition: A Tech’s Guide, 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.