EPA 608 Certification Exam Questions and answers

Ozone depletion is caused by _ in HCFC refrigerants - ANSWERS Chlorine CFCs and HCFCs _ making them capable of reaching the stratospheric ozone - ANSWERS do not dissolve in water or easily break down in the atmosphere How many ozone molecules are destroyed by one chlorine atom - ANSWERS 100,000 ozone molecules The stratospheric ozone layer protects us from _ - ANSWERS ultraviolet radiation from the sun Which health effect increases from loss of the stratospheric ozone layer - ANSWERS Cases of cataracts and skin cancer Which of the following proves that HCFCs are in the stratosphere - ANSWERS HCFCs found in air samples from the stratosphere What makes HFC refrigerants damaging to the environment - ANSWERS They have very high global warming potentials _ makes HFO refrigerants less flammable than HC refrigerants - ANSWERS Fluorine Which refrigerant contains chlorine - ANSWERS R12 HFO refrigerants are miscible in _ lubricants. - ANSWERS POE lubricants An example of an HCFC refrigerant is - ANSWERS R-123 What is being done in the U.S. to stop damage to the stratospheric ozone layer - ANSWERS Eliminating the use of CFCs and HCFCs refrigerants EPA regulations require appliances to have _ - ANSWERS a service aperture or process stub The release of any CFC, HCFC, or HFC refrigerant during _ is illegal. - ANSWERS theft of equipment _ is the only EPA SNAP approved "drop-in" replacement for R-22. - ANSWERS There are no direct drop in refrigerant substitutes Ester-based oils like POE can be mixed with _ - ANSWERS no other oils