Question 12Refrigeration & AC - QMED
70% to passSome chlorinated fluorocarbon refrigerants may decompose into a toxic irritating gas under what conditions?
Aexposed to an open flame or hot surface
Ballowed to mix with compressor oil
Ccharged into a system having copper fittings
Dstored at temperatures below 60 degrees Fahrenheit
AI Explanation
The correct answer is A) exposed to an open flame or hot surface. Chlorinated fluorocarbon refrigerants, such as R-12 and R-22, can decompose into toxic and irritating gases like phosgene and hydrogen chloride when exposed to high temperatures or open flames. This is due to the chemical breakdown of the refrigerant molecules under these conditions. The other answer choices do not directly cause the decomposition of these refrigerants into toxic gases.
Related Questions
Q71:A refrigeration system is equipped with a reciprocating compressor and a water-c... Q77:An increasing head pressure in a refrigeration system, without any corresponding... Q1:The set point adjustment of the device shown in the illustration is made by rota... Q34:Which of the fluids listed is suitable for use as a secondary refrigerant? Q99:Why can CFC or HCFC refrigerants leaking into a confined space or in limited sur...
Ready to test your knowledge?
Take a Refrigeration & AC - QMED Practice ExamOfficial Resources