EPA 608 Core · Dehydration & Evacuation · Hard
What chemical is formed when moisture mixes with CFC or HCFC refrigerants?
Answer: C. Hydrochloric and hydrofluoric acids.
- ACarbon monoxide and hydrogen sulfide.
- BPhosgene and chlorine gas.
- CHydrochloric and hydrofluoric acids.✓ Correct
- DSulfuric and nitric acids.
Why C is right
Moisture and refrigerant create harsh acids that destroy compressor windings.
More Core questions
- What tool is required to accurately measure a deep vacuum?
- What is the standard target vacuum level for system dehydration?
- What happens to the boiling point of water as system pressure drops in a vacuum?
- If a micron gauge rises to atmospheric pressure after the pump is off, what does it mean?
- If a micron gauge rises and then levels off (e.g., at 2000 microns), what does it mean?
Go deeper with the study guide EPA 608 Evacuation Levels: The Required Vacuum by Appliance, 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.