Chemical Engineering - MCQ Practice Questions

In a heterogeneous catalytic reaction, the overall rate is limited by which step if the external mass transfer coefficient is very small?

In a plug flow reactor (PFR), what is the relationship between conversion and reactor volume for a first-order reaction?

Which reactor configuration provides the highest conversion for an endothermic reaction at equilibrium?

In a CSTR operating at steady state, if volumetric flow rate increases while keeping concentration constant, what happens to conversion?

What does the Damköhler number (Da) represent in reactor design?

In a reactor with catalyst deactivation following first-order decay, what is the effect on reactant conversion over time?

For competitive-consecutive reactions: A → B (k₁), A → C (k₂), B → D (k₃), selectivity of B over C is defined as S_B/C = ?

In microbial fermentation kinetics, the Monod equation models specific growth rate. What happens when substrate concentration >> K_s?

For isothermal batch reactor with r = -dC_A/dt = kC_A^n, what is the integrated rate law for n=2?

For a reaction with activation energy E_a = 50 kJ/mol, by what factor does rate constant increase if temperature increases from 300K to 310K? (R = 8.314 J/mol·K)

In a CSTR operating at steady state with a first-order irreversible reaction A → B, if the volumetric flow rate is doubled while keeping reactor volume constant, how does the conversion of reactant A change?