Chemical Engineering - MCQ Practice Questions

Which of the following is NOT an extensive property?

According to the first law of thermodynamics, ΔU = Q - W. In this equation, W represents:

Which thermodynamic potential is most useful for constant temperature and pressure processes?

A system absorbs 500 J of heat and does 200 J of work. The change in internal energy is:

For an ideal gas undergoing isothermal expansion, the work done is given by:

The compressibility factor Z for an ideal gas is:

For a process where ΔG < 0 at all temperatures, the process must be:

The Maxwell relation that can be derived from Gibbs free energy is:

In a constant pressure calorimeter, 1 kg of water is heated from 25°C to 75°C. Heat absorbed is approximately (Cₚ of water = 4.18 kJ/kg·K):

The heat of vaporization of water is 40.66 kJ/mol at 373 K. The entropy of vaporization is approximately:

For a reversible process, the Clausius inequality states:

A cyclic heat engine operates between hot reservoir at 500 K and cold reservoir at 300 K. Maximum theoretical efficiency is:

The heat capacity at constant pressure Cₚ is always greater than heat capacity at constant volume Cᵥ because:

For a real gas with van der Waals equation, the constants 'a' and 'b' represent:

Which process is represented by a horizontal line on a T-S (Temperature-Entropy) diagram?

For a spontaneous process at constant T and P, which condition must be satisfied?

The partial molar Gibbs energy at infinite dilution gives the chemical potential μ. For a component in ideal solution:

In a throttling process (Joule-Thomson expansion), for an ideal gas:

A gas mixture contains N₂ (40% mole) and O₂ (60% mole) at 1 atm and 298 K. Calculate the partial pressure of O₂ in the mixture.

The entropy change for an isothermal irreversible expansion of an ideal gas from V₁ to V₂ is: