EPA 608 Core Test Sample Questions
____ of stratospheric chlorine is contribution of from natural sources such as volcano
eruptions and others:
A. 40%
B. 35%
C. 30%
D. 18%
Answer: D
____ recovery is the fastest and takes up less volume per pound of refrigerant to
recover:
A. Gas
B. Either Liquid and Gas
C. Liquid
D. Vapor
Answer: C
_____ breaks down the CFCs and frees the chlorine ion:
A. X-radiation
B. Infrared radiation
C. Ultraviolet radiation
D. Gamma radiation
Answer: C
_____ is the amount of heat required to change the refrigerant from a liquid to a gas:
A. Enthalpy
B. Latent heat
C. Sensible heat
,D. Total heat
Answer: B
_____ is the reaction of refrigerant with water:
A. Hydrolysis
B. Electrolysis
C. Photolysis
D. All the options are correct
Answer: A
_____ is used to the push-pull method of refrigeration:
A. Triple-valve recovery tank
B. Dual-valve recovery tank
C. Quadruple recovery tank
D. Single-valve recovery tank
Answer: B
______ nitrogen is used to pressurize the system:
A. Gaseous
B. Either Liquid or Gaseous
C. Liquid
D. Frozen
Answer: A
______ recovery equipment can only be used on appliances with 15 pounds or less
of refrigerant:
A. System-dependent
B. Self-contained
C. Active recovery
,D. Passive recovery
Answer: A
______ refrigerant cannot be transferred to another owner:
A. Reclaimed
B. Recycled
C. Recovered
D. Virgin
Answer: B
______ which formed at the stratosphere is unstable and strips a free oxygen atom
and then releases the chlorine ion which continue the chain reaction of destroying
ozone molecules:
A. Chlorine dioxide
B. Chlorine trioxide
C. Chlorine monoxide
D. Chlorine oxide
Answer: C
_______ of stratospheric chlorine comes from ozone-depleting substances:
A. 51%
B. 82%
C. 18%
D. 72%
Answer: B
A ______ drier should be installed to trap any debris that may damage the
compressor:
A. Discharge line filter
B. Suction line filter
, C. Vapor line filter
D. Liquid line filter
Answer: B
A cylinder label must contain what type of information about the refrigerant?
A. Weight of refrigerant
B. Type and amount of refrigerant
C. Pressure of cylinder
D. None of the above
Answer: B
A recovery cylinder can maximum store _____ refrigerants:
A. 3
B. 2
C. 1
D. 4
Answer: C
A vacuum test allows air and moisture to enter the system if there is a leak:
A. True
B. False
C. Sometimes
D. Never
Answer: A
A vacuum test could actually hide a leak:
A. False
B. True
C. Maybe
____ of stratospheric chlorine is contribution of from natural sources such as volcano
eruptions and others:
A. 40%
B. 35%
C. 30%
D. 18%
Answer: D
____ recovery is the fastest and takes up less volume per pound of refrigerant to
recover:
A. Gas
B. Either Liquid and Gas
C. Liquid
D. Vapor
Answer: C
_____ breaks down the CFCs and frees the chlorine ion:
A. X-radiation
B. Infrared radiation
C. Ultraviolet radiation
D. Gamma radiation
Answer: C
_____ is the amount of heat required to change the refrigerant from a liquid to a gas:
A. Enthalpy
B. Latent heat
C. Sensible heat
,D. Total heat
Answer: B
_____ is the reaction of refrigerant with water:
A. Hydrolysis
B. Electrolysis
C. Photolysis
D. All the options are correct
Answer: A
_____ is used to the push-pull method of refrigeration:
A. Triple-valve recovery tank
B. Dual-valve recovery tank
C. Quadruple recovery tank
D. Single-valve recovery tank
Answer: B
______ nitrogen is used to pressurize the system:
A. Gaseous
B. Either Liquid or Gaseous
C. Liquid
D. Frozen
Answer: A
______ recovery equipment can only be used on appliances with 15 pounds or less
of refrigerant:
A. System-dependent
B. Self-contained
C. Active recovery
,D. Passive recovery
Answer: A
______ refrigerant cannot be transferred to another owner:
A. Reclaimed
B. Recycled
C. Recovered
D. Virgin
Answer: B
______ which formed at the stratosphere is unstable and strips a free oxygen atom
and then releases the chlorine ion which continue the chain reaction of destroying
ozone molecules:
A. Chlorine dioxide
B. Chlorine trioxide
C. Chlorine monoxide
D. Chlorine oxide
Answer: C
_______ of stratospheric chlorine comes from ozone-depleting substances:
A. 51%
B. 82%
C. 18%
D. 72%
Answer: B
A ______ drier should be installed to trap any debris that may damage the
compressor:
A. Discharge line filter
B. Suction line filter
, C. Vapor line filter
D. Liquid line filter
Answer: B
A cylinder label must contain what type of information about the refrigerant?
A. Weight of refrigerant
B. Type and amount of refrigerant
C. Pressure of cylinder
D. None of the above
Answer: B
A recovery cylinder can maximum store _____ refrigerants:
A. 3
B. 2
C. 1
D. 4
Answer: C
A vacuum test allows air and moisture to enter the system if there is a leak:
A. True
B. False
C. Sometimes
D. Never
Answer: A
A vacuum test could actually hide a leak:
A. False
B. True
C. Maybe
