WorksheetsFirst law of thermodynamics
Total questions: 10
Worksheet time: 5mins
What does it mean by positive work?
work is done by the system
work is done in positive direction
work is done on the system
work is done in negative direction
What does it mean by negative heat?
heat enters the system
heat flows in positive direction
heat leaves the system
heat flows in negative direction
What is stated by the first law of thermodynamics?
The internal energy of a system changes from an initial value to a final value is zero.
The internal energy of a system changes from an initial value to a final value due to heat and temperature.
The internal energy of a system changes from an initial value to a final value due to heat and work.
The internal energy of a system changes from an initial value to a final value is constant.
Which thermodynamics process does no work on its surrounding?
isochoric process
isothermal process
isobaric process
adiabatic process
Which thermodynamics process with no heat transfer into or out of a system?
isobaric process
isothermal process
isochoric process
adiabatic process
The internal energy of an ideal gas depends on its ....
pressure
temperature
volume
pressure, temperature and volume
The following statements are TRUE about free expansion except ....
no change in internal energy
no work done by the system
no change in temperature
no change in volume
What is the limitation of the first law of thermodynamics?
it does not mention the quantity of heat
it does not mention the direction of the flow of heat
it does not mention the quantity of work
it does not mention the direction of work
Which is FALSE about the heat capacity of a diatomic ideal gas?
CvCp=57
CpCv=57
Cp=27R
Cv=25R
Which is TRUE about heat capacity of a monoatomic ideal gas?
Cp=25R
Cv=25R
Cp=23R
Cv=35R
