Thermodynamics for Chemical Engineers MCQs 2026

For reversible adiabatic process, entropy change is

1. Aalways positive✓
2. Balways negative✓
3. Cequal to R✓
4. Dzero✓

Maxwell relations are obtained from

1. ANewton laws only✓
2. BFourier law only✓
3. Cexact differentials of thermodynamic potentials✓
4. DDarcy equation only✓

Joule-Thomson coefficient μJT is

1. A(∂P/∂T)_S✓
2. B(∂V/∂T)_P✓
3. C(∂H/∂T)_P✓
4. D(∂T/∂P)_H✓

Residual properties account for

1. Aonly solid elasticity✓
2. Bonly pump cavitation✓
3. Cdeviation from ideal gas model✓
4. Donly wind drag✓

Equilibrium phase rule F = C − P + 2 applies to

1. Aonly reactive systems without phases✓
2. Bonly single phase always✓
3. Conly turbulent flow✓
4. Dintensive degrees of freedom in heterogeneous equilibrium✓