EPA /
608
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Core
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Test Sample Questions With Correct Answers
/ // // // // //
As //of //what //date //did //it //become //unlawful //to //release //Class //1 //and //Class //II
refrigerants //to //the //atmosphere?
a. //July //1, //1992
b. //July //1, //1993
c. //November //14, //1994
d. //January //1, //1996 //- //correct //answer(s) //✔✔ //a. //July //1, //1992
What //is //the //ozone //layer //and //why //is //it //important //to //us //on //Earth?
a. //Thin //layer //of //R-22 //in //the //atmosphere //that //filters //UV.
b. //Protective //shield //for //Earth //from //the //sun's //harmful //ultraviolent //(UV)
rays //in //the //stratosphere //layer //that //extends //about //6 //to //30 //miles //above
earth
c. //Thin //layer //of //CFC //and //HCFC //in //the //atmosphere //that //filters //UV.
d. /
/Protective /
/layer /
/that /
/shields /
/UV /
/in /
/the /
/Troposphere //- /
,/correct /
/answer(s) //✔✔ //b. //Protective //shield //for //Earth //from //the //sun's //harmful //ultraviolent //(UV)
rays //in //the //stratosphere //layer //that //extends //about //6 //to //30 //miles //above
earth
The //atom //found //in //CFC //and //HCFC //refrigerants //that //destroys //ozone //in //the
stratosphere //is?
a. //Fluorine
b. //Carbon
c. //Hydrogen
d. //Chlorine //- //correct //answer(s) //✔✔ //d. //Chlorine
What //is //an //ozone //molecule //made //of?
a. //Refrigerant
b. //Ammonia
c. //Three //oxygen //atoms //(O3).
d. //Oxygen //and //ammonia. //- //correct //answer(s) //✔✔ //Three //oxygen //atoms //(O3).
Which //refrigerant //is //a //CFC?
a. //R-134A
b. //R-123
c. //R-22
d. //R-12 //- //correct //answer(s) //✔✔ //d. //R-12
What //is //the //name //of //the //atom //that //attacks //ozone //molecules?
a. //CFC //atoms
,b. //HCFC //atoms
c. //Chlorine //and //bromine //atoms //emitted //into //the //atmosphere
d. //
a/
/and //
b //- //correct //answer(s) //✔✔ //c. //Chlorine //and //bromine //atoms //emitted //into //the //atmosphere
Which //refrigerant //is //a //HFC?
a. //R-134A
b. //R-123
c. //R-22
d. //R-12 //- //correct //answer(s) //✔✔ //a. //R-134A
Describe //how //one //Chlorine //atom //can //destroy //100,000 //ozone //molecules.
a. //Chlorine //releases //one //of //the //oxygen //atoms //and //forms //two //O2 //oxygen
molecules, //leaving //the //chlorine //molecule //free //to //attack //another
ozone //molecule //and //repeat //the //process.
b. //Chlorine //locks //up //the //ozone //molecule //and //then //and //then //goes //after
another.
c. //Chlorine //converts //the //ozone //to //bromine //and //then //attacks //more //ozone
molecules.
d. /
/Chlorine /
/can /
/bleach /
/100,000 /
/ozone /
/molecules /
/before /
/it /
, /weakens. //- /
/correct //answer(s) //✔✔ //a. //Chlorine //releases //one //of //the //oxygen //atoms //and //forms //two //O2
//oxygen //molecules, //leaving //the //chlorine //molecule //free //to //attack //another
ozone //molecule //and //repeat //the //process.
Which //refrigerant //contains //no //chlorine?
a. //R-134A
b. //R-123
c. //R-22
d. //R-12 //- //correct //answer(s) //✔✔ //a. //R-134A
Name //the //refrigerant //types //that //belong //to //CFCs, //HCFCs //and //HFCs
a. //CFC //R-11, //R-12, //R-500
b. //HCFC //R-22, //R-123
c. //HFC //R-134a
d. //All //of //the //above //are //correct //- //correct //answer(s) //✔✔ //d. //All //of //the //above //are //correct
The //rule //of //thumb //for //refilling //approved //cylinders //is //a //maximum //of //___ //percent
liquid?
a. //60%
b. //79%
c. //80%
d. //90% //- //correct //answer(s) //✔✔ //c. //80%
What //do //the //letters //in //"HCFC" //stand //for?
a. //High //Carbon //Fluorine //Chlorine
b. //hydrochlorofluorocarbons
608
/ /
Core
/ /
Test Sample Questions With Correct Answers
/ // // // // //
As //of //what //date //did //it //become //unlawful //to //release //Class //1 //and //Class //II
refrigerants //to //the //atmosphere?
a. //July //1, //1992
b. //July //1, //1993
c. //November //14, //1994
d. //January //1, //1996 //- //correct //answer(s) //✔✔ //a. //July //1, //1992
What //is //the //ozone //layer //and //why //is //it //important //to //us //on //Earth?
a. //Thin //layer //of //R-22 //in //the //atmosphere //that //filters //UV.
b. //Protective //shield //for //Earth //from //the //sun's //harmful //ultraviolent //(UV)
rays //in //the //stratosphere //layer //that //extends //about //6 //to //30 //miles //above
earth
c. //Thin //layer //of //CFC //and //HCFC //in //the //atmosphere //that //filters //UV.
d. /
/Protective /
/layer /
/that /
/shields /
/UV /
/in /
/the /
/Troposphere //- /
,/correct /
/answer(s) //✔✔ //b. //Protective //shield //for //Earth //from //the //sun's //harmful //ultraviolent //(UV)
rays //in //the //stratosphere //layer //that //extends //about //6 //to //30 //miles //above
earth
The //atom //found //in //CFC //and //HCFC //refrigerants //that //destroys //ozone //in //the
stratosphere //is?
a. //Fluorine
b. //Carbon
c. //Hydrogen
d. //Chlorine //- //correct //answer(s) //✔✔ //d. //Chlorine
What //is //an //ozone //molecule //made //of?
a. //Refrigerant
b. //Ammonia
c. //Three //oxygen //atoms //(O3).
d. //Oxygen //and //ammonia. //- //correct //answer(s) //✔✔ //Three //oxygen //atoms //(O3).
Which //refrigerant //is //a //CFC?
a. //R-134A
b. //R-123
c. //R-22
d. //R-12 //- //correct //answer(s) //✔✔ //d. //R-12
What //is //the //name //of //the //atom //that //attacks //ozone //molecules?
a. //CFC //atoms
,b. //HCFC //atoms
c. //Chlorine //and //bromine //atoms //emitted //into //the //atmosphere
d. //
a/
/and //
b //- //correct //answer(s) //✔✔ //c. //Chlorine //and //bromine //atoms //emitted //into //the //atmosphere
Which //refrigerant //is //a //HFC?
a. //R-134A
b. //R-123
c. //R-22
d. //R-12 //- //correct //answer(s) //✔✔ //a. //R-134A
Describe //how //one //Chlorine //atom //can //destroy //100,000 //ozone //molecules.
a. //Chlorine //releases //one //of //the //oxygen //atoms //and //forms //two //O2 //oxygen
molecules, //leaving //the //chlorine //molecule //free //to //attack //another
ozone //molecule //and //repeat //the //process.
b. //Chlorine //locks //up //the //ozone //molecule //and //then //and //then //goes //after
another.
c. //Chlorine //converts //the //ozone //to //bromine //and //then //attacks //more //ozone
molecules.
d. /
/Chlorine /
/can /
/bleach /
/100,000 /
/ozone /
/molecules /
/before /
/it /
, /weakens. //- /
/correct //answer(s) //✔✔ //a. //Chlorine //releases //one //of //the //oxygen //atoms //and //forms //two //O2
//oxygen //molecules, //leaving //the //chlorine //molecule //free //to //attack //another
ozone //molecule //and //repeat //the //process.
Which //refrigerant //contains //no //chlorine?
a. //R-134A
b. //R-123
c. //R-22
d. //R-12 //- //correct //answer(s) //✔✔ //a. //R-134A
Name //the //refrigerant //types //that //belong //to //CFCs, //HCFCs //and //HFCs
a. //CFC //R-11, //R-12, //R-500
b. //HCFC //R-22, //R-123
c. //HFC //R-134a
d. //All //of //the //above //are //correct //- //correct //answer(s) //✔✔ //d. //All //of //the //above //are //correct
The //rule //of //thumb //for //refilling //approved //cylinders //is //a //maximum //of //___ //percent
liquid?
a. //60%
b. //79%
c. //80%
d. //90% //- //correct //answer(s) //✔✔ //c. //80%
What //do //the //letters //in //"HCFC" //stand //for?
a. //High //Carbon //Fluorine //Chlorine
b. //hydrochlorofluorocarbons
