CFC Core Exam Questions with answers

CFC Core Exam Questions with answers

__are |fluorocarbon |refrigerants |that |cause |no |harm |to |stratospheric |ozone.
A.CFCS
B.HCFCS
C.HFCs

D.HalonsTM |- |ANSWERS✔✔ |C


2.The |Clean |Air |Act_.
A.calls |for |the |phaseout |of |PFC |refrigerant |production
B.requires |that |all |leaks |be |fixed |within |30 |days
C.requires |OSHA |to |set |standards |for |the |recovery |of |refrigerants |prior |to |appliance
|disposal



D.prohibits |CFC/HCFC |venting |as |of |July |1,1992 |- |ANSWERS✔✔ |D


3.Refrigerant__is |the |type |of |contamination |that |is |the |most |difficult |for |a |reclaiming |facility
|to



eliminate.
A.with |air
B.with |moisture
C.from |an |acid |burnout

D.containing |particulate |contaminants |- |ANSWERS✔✔ |C


__is |a |CFC |refrigerant.
A.R-134a
B.R-123
C.R-22

,D.R-12 |- |ANSWERS✔✔ |D


_is |an |HCFC |refrigerant.
A.R-11
B.R-22
C.R-114

D.R-717 |- |ANSWERS✔✔ |B


__is |an |HFC |refrigerant.
A.R-134a
B.R-115
C.R-22

D.R-11 |- |ANSWERS✔✔ |A


The |strongest |evidence |that |CFCs |are |in |the |stratosphere |is_.
A.theory |only
B.measurements |of |CFCs |in |air |samples |from |the |lower |atmosphere
C.measurements |of |CFCs |in |air |samples |from |the |stratosphere
D.measurements |of |other |man-made |compounds |in |air |samples |from |the |stratosphere |-
|ANSWERS✔✔ |C




Ozone |depletion |in |the |stratosphere |is |a__problem.
A.local
B.regional
C.national

D.global |- |ANSWERS✔✔ |D


The |ozone |layer |protects |the |planet's |surface |from_.

,A.losing |oxygen
B.chlorine |monoxide
C.UV |radiation

D.hydrogen |chloride |- |ANSWERS✔✔ |C


One |of |the |most |serious |results |of |damage |to |the |ozone |layer |is.
A.increased |growth |of |marine |plants
B.increased |volcanic |activity
C.increases |in |human |skin |cancer

D.higher |natural |background |radioactivity |- |ANSWERS✔✔ |C


The |size(capacity)of |a |vacuum |pump |and |suction |line |size |determine
A.vacuum |polarity
B.evacuation |time
C.refrigerant |used

D.oil |viscosity |- |ANSWERS✔✔ |B


__is |the |element |in |refrigerants |that |causes |ozone |depletion.
A.Fluorine
B.Chlorine
C.Carbon

D.Hydrogen |- |ANSWERS✔✔ |B


Some |state |and |local |governments |may |establish |laws |that_.
A.counteract |EPA |regulations
B.are |not |as |strict |as |the |Clean |Air |Act |and |EPA |regulations
C.contain |stricter |regulations |than |the |Clean |Air |Act |and |EPA |regulations

, D.supersede |EPA |regulations |- |ANSWERS✔✔ |D


Whenever |dry |nitrogen |from |a |portable |cylinder |is |used |in |service |and |installation
|practice,the



most |important |safety |consideration |is |that.
A.the |regulator |has |a |new |set |of |gauges
B.the |gauges |are |clean
C.a |relief |valve |is |inserted |in |the |downstream |line |from |the |pressure |regulator

D.no |refrigerant |lines |can |leak |- |ANSWERS✔✔ |C


Personal |protective |equipment(gloves,safety |glasses,safety |shoes,etc.)must |be |wom |when.
A.reporting |for |work
B.handling |and |filling |refrigerant |cylinders
C.climbing |ladders

D.lifting |- |ANSWERS✔✔ |B


__is |a |chlorine-free |refrigerant.
A.HFC-134a
B.CFC-2
C.HCFC-22

D.HCFC-124 |- |ANSWERS✔✔ |A


When |leak |checking |a |unit |that |has |lost |a |complete |charge,__is/are |the |gas(es)that |would
cause |the |least |damage |to |the |environment.
A.dry |nitrogen |and |R-22
B.compressed |air |and |R-12
C.dry |nitrogen

D.dry |nitrogen |and |R-12 |- |ANSWERS✔✔ |C