EPA 608 Core · Safety · Medium
What happens when refrigerant vapor is inhaled in large quantities?
Answer: A. It displaces oxygen and can suffocate you.
- AIt displaces oxygen and can suffocate you.✓ Correct
- BIt acts as a mild, harmless stimulant.
- CIt causes temporary blindness only.
- DIt cures respiratory infections.
Why A is right
Refrigerants are heavier than air; they sink and displace oxygen, leading to suffocation.
More Core questions
- 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?
- Why must you never pressurize a system with pure oxygen?
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.