EPA 609 CORE ALL MAIN EXAMS QUESTIONS AND
ANSWERS SURE A+
✔✔CFC refrigerants are chemically highly unstable: - ✔✔False
✔✔Ultraviolet radiation breaks down the CFCs and frees the chlorine ion - ✔✔True
✔✔At present there is no restriction on the sale of HFC-134a - ✔✔True
✔✔Hydrofluorocarbons (HFCs) contributes to which of the following: - ✔✔global
warming
✔✔The thermodynamic properties of HFC-134a are similar to CFC-12 - ✔✔True
✔✔The "ozone layer" consists of ozone in which part of the atmosphere: -
✔✔stratosphere
✔✔As per the CAA, all records related to entities of MVAC system services must be
maintained for ________ years - ✔✔3
✔✔_______ has replaced CFC-12 in all automotive applications - ✔✔HFC-134a
, ✔✔The primary cause of over-pressurization of refrigeration cylinder is due to
overheating - ✔✔True
✔✔The color code for R-12 disposable refrigerant cylinders is ______ - ✔✔white
✔✔Since _______, it has been mandatory to recycle HFC-134a as well as any other
automotive refrigerant before returning to that MVAC or sold: - ✔✔Jan 29, 1998
✔✔Halons were completely phased out by 1994 - ✔✔True
✔✔R-134a is flammable at ambient temperatures and atmospheric pressures -
✔✔False
✔✔Since ______, it has been illegal to vent substitutes for CFC 3. and HCFC
refrigerants: - ✔✔Nov 15, 1995
✔✔Which of the following will not react with ozone gas: - ✔✔Fluorine
✔✔Montreal Protocol is signed in ______ by 23 counties including USA - ✔✔Sep 1987
✔✔The sale of small containers of refrigerant under _______, including the one pound
cans, are restricted to only people certified in Section 609 - ✔✔20 lb
✔✔Disposable cylinders are manufactured from: - ✔✔steel
✔✔HFC-134a refrigerant has an Ozone Depletion Potential of: - ✔✔0.0
✔✔Ozone layer is present in both Stratosphere and mesosphere layers of earth's
atmosphere: - ✔✔False
✔✔R-134a refrigerant has low solubility in non-polar lubricants - ✔✔True
✔✔Average ozone concentration in Earth's atmosphere as a whole is only about
______ parts per million - ✔✔0.3
✔✔Use of Carbon dioxide (R-744) refrigerant results into a ______ efficiency cycle: -
✔✔much lower
✔✔Recovery cylinders are painted yellow in the shoulder area and _____ down the side
- ✔✔12 inches
ANSWERS SURE A+
✔✔CFC refrigerants are chemically highly unstable: - ✔✔False
✔✔Ultraviolet radiation breaks down the CFCs and frees the chlorine ion - ✔✔True
✔✔At present there is no restriction on the sale of HFC-134a - ✔✔True
✔✔Hydrofluorocarbons (HFCs) contributes to which of the following: - ✔✔global
warming
✔✔The thermodynamic properties of HFC-134a are similar to CFC-12 - ✔✔True
✔✔The "ozone layer" consists of ozone in which part of the atmosphere: -
✔✔stratosphere
✔✔As per the CAA, all records related to entities of MVAC system services must be
maintained for ________ years - ✔✔3
✔✔_______ has replaced CFC-12 in all automotive applications - ✔✔HFC-134a
, ✔✔The primary cause of over-pressurization of refrigeration cylinder is due to
overheating - ✔✔True
✔✔The color code for R-12 disposable refrigerant cylinders is ______ - ✔✔white
✔✔Since _______, it has been mandatory to recycle HFC-134a as well as any other
automotive refrigerant before returning to that MVAC or sold: - ✔✔Jan 29, 1998
✔✔Halons were completely phased out by 1994 - ✔✔True
✔✔R-134a is flammable at ambient temperatures and atmospheric pressures -
✔✔False
✔✔Since ______, it has been illegal to vent substitutes for CFC 3. and HCFC
refrigerants: - ✔✔Nov 15, 1995
✔✔Which of the following will not react with ozone gas: - ✔✔Fluorine
✔✔Montreal Protocol is signed in ______ by 23 counties including USA - ✔✔Sep 1987
✔✔The sale of small containers of refrigerant under _______, including the one pound
cans, are restricted to only people certified in Section 609 - ✔✔20 lb
✔✔Disposable cylinders are manufactured from: - ✔✔steel
✔✔HFC-134a refrigerant has an Ozone Depletion Potential of: - ✔✔0.0
✔✔Ozone layer is present in both Stratosphere and mesosphere layers of earth's
atmosphere: - ✔✔False
✔✔R-134a refrigerant has low solubility in non-polar lubricants - ✔✔True
✔✔Average ozone concentration in Earth's atmosphere as a whole is only about
______ parts per million - ✔✔0.3
✔✔Use of Carbon dioxide (R-744) refrigerant results into a ______ efficiency cycle: -
✔✔much lower
✔✔Recovery cylinders are painted yellow in the shoulder area and _____ down the side
- ✔✔12 inches
