Chemical Reaction Engineering MCQ on Packed Bed Catalytic Reactor

This is an MCQ-based quiz on the topic of Chemical Reaction Engineering MCQ on Packed Bed Catalytic Reactor.

This includes the following:-

Physisorption

Van-der-waal’s forces

Chemisorption

The energy of adsorption of gas molecules.

Langmuir adsorption model

Start Quiz

State true or false. Physisorption occurs by Van-der-waal’s forces.

True False

The variation of Chemisorption with Pressure is ____

Chemisorption increases with increase in pressure Chemisorption decreases with increase in pressure Chemisorption increases with decrease in pressure Change of pressure has no effect on Chemisorption

Which of the following is not an assumption of Langmuir model?

Energy of adsorption of gas molecules to the adsorbent site is different at different adsorbing site Maximum amount of adsorption corresponds to a monolayer Desorption rate depends on the amount of material adsorbed onto the solid surface Gas phase molecules are adsorbed on discrete points on the solid surface

According to Langmuir adsorption model, the rate of adsorption of a gas molecule onto the solid surface is ____

Proportional to the square of the partial pressure of the gas Proportional to the partial pressure of the gas Inversely proportional to the square of the partial pressure of the gas Inversely proportional to the partial pressure of the gas

The sequence of steps in a heterogeneous catalytic reaction is ____

Diffusion → Adsorption → Reaction → Desorption → Diffusion → Mass transfer → Mass transfer Mass transfer → Diffusion → Adsorption → Reaction → Desorption → Diffusion → Mass transfer Mass transfer → Diffusion → Adsorption → Desorption → Diffusion → Mass transfer → Reaction Mass transfer → Adsorption → Diffusion Reaction → Desorption → Diffusion → Mass transfer

For the reaction step to be the controlling mechanism in a catalytic reversible reaction, which of the following is valid?

Rate of adsorption > Rate of desorption Rate of adsorption < Rate of desorption Rate of adsorption = Rate of desorption Rate of adsorption ≠ Rate of desorption

The Langmuir Hinshelwood mechanism for equimolar reactant feed is ____

A gas phase adsorption reaction is reaction controlling. The reaction follows Eley – Rideal mechanism, represented by A + B → R. If the product also adsorbs, which of the following rate expressions is true?

If n is a constant for a particular gas adsorption, the dependence of ( rac{V}{V_m}) to the partial pressure of adsorbed gas by Freundlich adsorption is ____