Epa Section 609 Exam Questions With Correct Answers

Average ozone concentration in Earth's atmosphere as a whole is only about ______ parts per million {Ans: 0.3}Each chlorine ion can able to destroy ______ ozone molecules {Ans: 100,000}Refrigerants are lighter than the air: {Ans: False}Persons servicing MVACs do not have this choice they must be certified as _______ MVAC technicians if they perform the AC service for compensation. {Ans: Section 609}EPA does require a leak to be repaired prior to recharging a motor vehicle air conditioning system {Ans: False}Disposable cylinders are manufactured from: {Ans: Steel}The "ozone layer" consists of ozone in which part of the atmosphere: {Ans: Stratosphere}Which of the following refrigerant has a molecular formula is C2H4F2: {Ans: R-152a}Refrigerants may be mixed in recovery cylinders: {Ans: False ( NO MIXTURES)}Since _____, it is illegal to vent substitutes for CFC and HCFC refrigerants {Ans: Nov 15, 1995}A refillable refrigerant cylinder must not be filled above ______ of its full capacity. {Ans: 80%}Ozone layer is present in both Stratosphere and mesosphere layers of earth's atmosphere: {Ans: False}HFC-134a refrigerant has an Ozone Depletion Potential of: {Ans: 0.0}If a technician is already trained and certified to handle CFC-12, he