EPA 609 ACTUAL FINAL EXAMS QUESTIONS AND
ANSWERS SURE A+
✔✔Ozone is an unstable molecule: - ✔✔True
✔✔Chlorine reacts with ozone and converts ozone to: - ✔✔Oxygen
✔✔Ozone at ground level is a harmful pollutant - ✔✔True
✔✔Skin or eye contact with fluorocarbon refrigerants can result in: - ✔✔frostbite,
irritation, or fatality
✔✔The sale of small containers of refrigerant under _____., including the one pound
cans, are restricted to only people certified in Section 609. - ✔✔20 lb
✔✔Most halogenated compounds will decompose at room temperature: - ✔✔False
✔✔Section 608 HVAC/R Technicians cannot buy refrigerant in quantities less than
_______ - ✔✔20 lbs
✔✔Which of the following refrigerants has minimum or zero ozone depletion potential: -
✔✔HFCs
, ✔✔HFC-152a MVAC systems are acceptable if MVAC systems must be designed to
avoid concentrations in the passenger cabin that are above ______ for more than 15
seconds. - ✔✔3.7%
✔✔_______ is the key agent responsible for stratospheric ozone depletion - ✔✔chlorine
monoxide
✔✔The per the AHRI standard unsaturated impurities in HFC-134a to be limited to a
maximum level of _______: - ✔✔40 ppm
✔✔Prior to scrapping MVAC equipment the refrigerant must be recovered to a minimum
vacuum of _______ of mercury - ✔✔4 inches
✔✔Any person who sells or distributes any Class I or Class II substance in a container
of less than _________ of such refrigerant must verify that the purchaser is Properly
Trained and 609 Certified and must retain a record. - ✔✔20 pounds
✔✔EPA does require a leak to be repaired prior to recharging a motor vehicle air
conditioning system - ✔✔False
✔✔Which of the following are the causes of Ozone Layer Depletion: -
✔✔Hydrochlorofluorocarbons, Volcanic eruptions, and Chlorofluorocarbons
✔✔______ has developed standards that apply to the recovery and recycling of motor
vehicle refrigerant as well as service guidelines for MVAC technicians. - ✔✔SAE
✔✔Ozone layer extends at Earth's altitude between _____ - ✔✔7 and 30 miles
✔✔HFC-134a contribute to which of the following: - ✔✔Global Warming
✔✔The empty refillable refrigerant tank must be evacuated to a minimum vacuum of
______ of mercury - ✔✔27 inches
✔✔Refrigerants that contain chlorine but not hydrogen are stable - ✔✔True
✔✔The internal pressure of a refrigerant cylinder with one ounce of liquid refrigerant is
_______ full cylinder: - ✔✔exactly the same as
✔✔R-152a refrigerant chemical compound does not composed of which of the
following: - ✔✔Chlorine
ANSWERS SURE A+
✔✔Ozone is an unstable molecule: - ✔✔True
✔✔Chlorine reacts with ozone and converts ozone to: - ✔✔Oxygen
✔✔Ozone at ground level is a harmful pollutant - ✔✔True
✔✔Skin or eye contact with fluorocarbon refrigerants can result in: - ✔✔frostbite,
irritation, or fatality
✔✔The sale of small containers of refrigerant under _____., including the one pound
cans, are restricted to only people certified in Section 609. - ✔✔20 lb
✔✔Most halogenated compounds will decompose at room temperature: - ✔✔False
✔✔Section 608 HVAC/R Technicians cannot buy refrigerant in quantities less than
_______ - ✔✔20 lbs
✔✔Which of the following refrigerants has minimum or zero ozone depletion potential: -
✔✔HFCs
, ✔✔HFC-152a MVAC systems are acceptable if MVAC systems must be designed to
avoid concentrations in the passenger cabin that are above ______ for more than 15
seconds. - ✔✔3.7%
✔✔_______ is the key agent responsible for stratospheric ozone depletion - ✔✔chlorine
monoxide
✔✔The per the AHRI standard unsaturated impurities in HFC-134a to be limited to a
maximum level of _______: - ✔✔40 ppm
✔✔Prior to scrapping MVAC equipment the refrigerant must be recovered to a minimum
vacuum of _______ of mercury - ✔✔4 inches
✔✔Any person who sells or distributes any Class I or Class II substance in a container
of less than _________ of such refrigerant must verify that the purchaser is Properly
Trained and 609 Certified and must retain a record. - ✔✔20 pounds
✔✔EPA does require a leak to be repaired prior to recharging a motor vehicle air
conditioning system - ✔✔False
✔✔Which of the following are the causes of Ozone Layer Depletion: -
✔✔Hydrochlorofluorocarbons, Volcanic eruptions, and Chlorofluorocarbons
✔✔______ has developed standards that apply to the recovery and recycling of motor
vehicle refrigerant as well as service guidelines for MVAC technicians. - ✔✔SAE
✔✔Ozone layer extends at Earth's altitude between _____ - ✔✔7 and 30 miles
✔✔HFC-134a contribute to which of the following: - ✔✔Global Warming
✔✔The empty refillable refrigerant tank must be evacuated to a minimum vacuum of
______ of mercury - ✔✔27 inches
✔✔Refrigerants that contain chlorine but not hydrogen are stable - ✔✔True
✔✔The internal pressure of a refrigerant cylinder with one ounce of liquid refrigerant is
_______ full cylinder: - ✔✔exactly the same as
✔✔R-152a refrigerant chemical compound does not composed of which of the
following: - ✔✔Chlorine
