IIT JEE Chemistry Practice Paper Part 6– Thermodynamics Previous Years’ Questions.

1. The enthalpy change for a reaction does not depend upon:

a) Physical state of reactants
b) Temperature of reaction
c) Path of the reaction
d) Physical state of products

2. Which law of thermodynamics introduces the concept of entropy?

a) Zeroth Law
b) First Law
c) Second Law
d) Third Law

3. The internal energy of an ideal gas depends on:

a) Pressure only
b) Volume only
c) Temperature only
d) Both pressure and volume

4. In an isothermal process, the change in internal energy of an ideal gas is:

a) Positive
b) Negative
c) Zero
d) Depends on pressure

5. Gibbs free energy is given by:

a) G = H + TS
b) G = H – TS
c) G = U + PV
d) G = U – PV

6. The enthalpy of neutralization of a strong acid with a strong base is approximately:

a) –57 kJ/mol
b) –100 kJ/mol
c) +57 kJ/mol
d) 0 kJ/mol

7. A process in which no heat enters or leaves the system is called:

a) Isothermal
b) Isobaric
c) Isochoric
d) Adiabatic

8. For a spontaneous reaction at constant temperature and pressure:

a) ΔG > 0
b) ΔG < 0
c) ΔH > 0
d) ΔS < 0

9. In which process is work done maximum?

a) Reversible process
b) Irreversible process
c) Isobaric process
d) Isochoric process

10. The First Law of Thermodynamics is a statement of:

a) Conservation of energy
b) Conservation of entropy
c) Conservation of enthalpy
d) Conservation of mass