WorksheetsThermodynamics
Total questions: 20
Worksheet time: 20mins
The first law of thermodynamics states that the change in the internal energy of a system is equal to the difference in energy transferred to or from the system as heat and
mass
work done
force
pressure
Transfer of heat in a gas or liquid by the motion of particles in the heated fluid
conduction
convection
radiation
1200 J of heat are added to a sample of gas while the gas does 400 J of work on the environment. What is the change in internal energy of the gas?
800 J
1600 J
-800 J
-1600 J
During process A, from state 1 to state 2, the temperature of the ideal gas
stays the same
increases
decreases
is half as much
During an adiabatic process, a sample of gas does 400 J of work on the environment. What change occurs with the internal energy of the gas?
The internal energy increases by 400 J.
The internal energy doesn't change.
The internal energy decreases by 400 J.
There is not enough information if we don't know how much heat was added or removed.
Process B on the PV diagram is an ______________ process.
adiabatic
isobaric
isochoric
isothermal
A system comprising a single phase is called a
(a) closed system
(b) open system
(c) isolated system
(d) homogeneous system
(e) heterogeneous system.
In an irreversible process, there is a
(a) loss of heat
(b) no loss of heat
(c) gain of heat
(d) no gain of heat.
The heating and expanding of a gas is called
(a) thermodynamic system
(b) thermodynamic cycle
(c) thermodynamic process
(d) thermodynamic law.
The value of one bar (in SI units) is equal to
(a) 100 N/m2
(b) 1000 N/m2
(c) 1 × 104 N/m2
(d) 1 × 105 N/m2
(e) 1 × 106 N/m2.
In an extensive property of a thermodynamic system
(a) extensive heat is transferred
(b) extensive work is done
(c) extensive energy is utilised
(d) all of the above
(e) none of the above.
Which of the following is an intensive property of a thermodynamic system ?
(a) Volume
(b) Temperature
(c) Mass
(d) Energy.
When two bodies are in thermal equilibrium with a third body they are also in thermal equilibrium with
each other. This statement is called
(a) Zeroth law of thermodyamics
(b) First law of thermodynamics
(c) Second law of thermodynamics
(d) Kelvin Planck’s law.
2.Internal energy depends on
Only pressure
Only Volume
Only Temperature
Only Mass
3. 1st Law of thermodynamics is the conservation of
Radiation energy
Heat energy
Electric energy
Magnetic energy
6. Area under P-V diagram gives
Heat
Internal energy
Work done
Temperature
7. Which of the following process is used to do maximum work done on the ideal gas if the gas is compressed to half of its initial volume?
Isothermal
Isochoric
Isobaric
Adiabatic
10. 1 Calorie is equal to
3.2 J
5.2J
3.6 J
4.2 J
