NATE/ICE Test 2025 Questions and
Answers
formula to convert celsius to fahrenheit - ANSWER✔✔-F = (1.8 x C) + 32
formula to convert fahrenheit to celsius - ANSWER✔✔-C = .56 (F - 32)
specific heat - ANSWER✔✔-the amount of heat required to raise 1 lb of a substance 1 degree
fahrenheit
sensible heat - ANSWER✔✔-Is the heat that came be measured or sensed by a thermometer
latent heat - ANSWER✔✔-hidden heat that changes the state of a substance
Btu - ANSWER✔✔-The amount of heat requires to raise one pound of water one degree
Fahrenheit
The amount of heat that it takes to change 1 lb of 212 degrees Fahrenheit water to 1 lb of 212 steam
is - ANSWER✔✔-970 Btu
that amount of heat requires to change 1 lb of 32 degrees Fahrenheit ice to 1 lb of 32 water is -
ANSWER✔✔-144 Btu
conduction - ANSWER✔✔-Is the transfer of heat from one molecule to another
FOR STUDY PURPOSES ONLY COPYRIGHT © 2025 ALL RIGHTS RESERVED 1
, convection - ANSWER✔✔-The transfer of heat from one place to another by fluid
radiation - ANSWER✔✔-The transfer of heat from a heat source to a solid object through space
one ton of refrigerant is equivalent to _____ But per hour - ANSWER✔✔-12,000
when a substances changes from liquid to gas is - ANSWER✔✔-latent heat of vaporization
when a substance changes from gas to a liquid is called - ANSWER✔✔-latent heat of condensation
when a substance changes from a solid to a gas - ANSWER✔✔-sublimation
an _____ refrigerant is a mixture of two or more refrigerants that performs as a single component
refrigerant - ANSWER✔✔-azeotropic
a _____ refrigerant is a mixture of two or more refrigerants that have different boiling points -
ANSWER✔✔-near-azeotropic
a _____ refrigerant is a mixture of two or more refrigerants that have different boiling points -
ANSWER✔✔-zeotropic
a _____ refrigerant is a blend of three refrigerants that acts as a zeotropic refrigerant -
ANSWER✔✔-ternary
zeotropic and near-azeotropic refrigerant must be charged into a system as a _____ or the
refrigerant will change it's composition - ANSWER✔✔-liquid
dewpoint line - ANSWER✔✔-used to measure superheat
bubble like - ANSWER✔✔-used to measure subcooling
FOR STUDY PURPOSES ONLY COPYRIGHT © 2025 ALL RIGHTS RESERVED 2
Answers
formula to convert celsius to fahrenheit - ANSWER✔✔-F = (1.8 x C) + 32
formula to convert fahrenheit to celsius - ANSWER✔✔-C = .56 (F - 32)
specific heat - ANSWER✔✔-the amount of heat required to raise 1 lb of a substance 1 degree
fahrenheit
sensible heat - ANSWER✔✔-Is the heat that came be measured or sensed by a thermometer
latent heat - ANSWER✔✔-hidden heat that changes the state of a substance
Btu - ANSWER✔✔-The amount of heat requires to raise one pound of water one degree
Fahrenheit
The amount of heat that it takes to change 1 lb of 212 degrees Fahrenheit water to 1 lb of 212 steam
is - ANSWER✔✔-970 Btu
that amount of heat requires to change 1 lb of 32 degrees Fahrenheit ice to 1 lb of 32 water is -
ANSWER✔✔-144 Btu
conduction - ANSWER✔✔-Is the transfer of heat from one molecule to another
FOR STUDY PURPOSES ONLY COPYRIGHT © 2025 ALL RIGHTS RESERVED 1
, convection - ANSWER✔✔-The transfer of heat from one place to another by fluid
radiation - ANSWER✔✔-The transfer of heat from a heat source to a solid object through space
one ton of refrigerant is equivalent to _____ But per hour - ANSWER✔✔-12,000
when a substances changes from liquid to gas is - ANSWER✔✔-latent heat of vaporization
when a substance changes from gas to a liquid is called - ANSWER✔✔-latent heat of condensation
when a substance changes from a solid to a gas - ANSWER✔✔-sublimation
an _____ refrigerant is a mixture of two or more refrigerants that performs as a single component
refrigerant - ANSWER✔✔-azeotropic
a _____ refrigerant is a mixture of two or more refrigerants that have different boiling points -
ANSWER✔✔-near-azeotropic
a _____ refrigerant is a mixture of two or more refrigerants that have different boiling points -
ANSWER✔✔-zeotropic
a _____ refrigerant is a blend of three refrigerants that acts as a zeotropic refrigerant -
ANSWER✔✔-ternary
zeotropic and near-azeotropic refrigerant must be charged into a system as a _____ or the
refrigerant will change it's composition - ANSWER✔✔-liquid
dewpoint line - ANSWER✔✔-used to measure superheat
bubble like - ANSWER✔✔-used to measure subcooling
FOR STUDY PURPOSES ONLY COPYRIGHT © 2025 ALL RIGHTS RESERVED 2
