EPA Certification Exam (A+ GRADED)

Which Refrigerants contain the most chlorine? correct answers CFC's As of what date did it become unlawful to intentionally release Class 1 and Class 2 refrigerants to the atmosphere? correct answers July 1, 1992 Which Refrigerants have the lowest zone depletion potential? correct answers HFC's The molecule found in CFC's and HCHC's refrigerants that destroys the ozone in the stratosphere is: correct answers Chlorine Stratospheric ozone consists of: correct answers Three oxygen atoms Stratospheric ozone depletion is a _________ problem: correct answers Global The Gas in the stratosphere that protects us from ultraviolet radiation is: correct answers Ozone Which refrigerant is a CFC? correct answers R-12 Which refrigerant is an HCFC? correct answers R-123 & R-22 Which refrigerant is an HFC? correct answers R-134a Which refrigerant contains no chlorine? correct answers R-134a The Molecule found in the stratosphere that indicates stratospheric ozone depletion is taking place is: correct answers Chlorine monoxide The following actions would violate the clean air act (CAA): correct answers Knowingly releasing Class 1 Class 2 substances failing to keep or falsifying required records failing to tech the required evacuation levels before opening a systems to the atmosphere for service One time (disposable) refrigerant cylinders are used for: correct answers Virgin refrigerant The rule of thumb for refilling approved cylinders is a maximum of _____ percent liquid? correct answers 80% The time it takes to properly evacuate and dehydrate a system prior to charging with refrigerant is determined by the: correct answers Total volume of the system Amount of non-condensibles (moisture) in the system Ambient Temperature