EPA 608 Type I · Safety · Easy
Which refrigerant used in new refrigerators requires ignition-proof equipment?
Answer: A. Isobutane (R-600a).
- AIsobutane (R-600a).✓ Correct
- BTetrafluoroethane (R-134a).
- CAn HFC blend (R-410A).
- DDichlorodifluoromethane (CFC-12).
Why A is right
Isobutane (R-600a) is an A3 highly flammable hydrocarbon requiring special spark-proof tools.
More Type I questions
- Under ASHRAE 34, how is Isobutane (R-600a) classified for safety?
- What was the primary HFC replacement for R-12 in household refrigerators?
- Which oil is most commonly used with HFC-134a in small appliances?
- Who is responsible for making sure the refrigerant was removed from a refrigerator before it is scrapped?
- How long must a final processor keep the signed statements for disposed small appliances?
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.