6. The Carnot cycle consists of:
a) Two isothermal and two isochoric processes
b) Two isothermal and two adiabatic processes
c) Two isochoric and two adiabatic processes
d) Two isobaric and two adiabatic processes
Answer: b) Two isothermal and two adiabatic processes
7. The entropy of a system is a measure of:
a) Disorder or randomness
b) Energy content
c) Heat transfer
d) Pressure
Answer: a) Disorder or randomness
8. The Gibbs free energy is defined as:
a) G = H – TS
b) G = H + TS
c) G = U + PV
d) G = U – PV
Answer: b) G = H + TS
9. The equation of state for an ideal gas is given by:
a) PV = nRT
b) PV = RT
c) PV = nkT
d) PV = nT
Answer: a) PV = nRT
10. The Joule-Thomson effect describes the:
a) Heating of a gas when work is done on it
b) Cooling of a gas when work is done on it
c) Heating of a gas when it does work
d) Cooling of a gas when it does work
Answer: b) Cooling of a gas when work is done on it