Chemical Reaction Engineering - Practice Test

[#321] A Catalyst

(A) Initiates a reaction

(B) Lowers the activation energy of reacting molecules

(C) Is capable of reacting with any one of the reactants

(D) Can not be recovered chemically unchanged at the end of a chemical reaction

(E) Increases the equilibrium concentration of the product

(F) Changes the equilibrium constant of the reaction

(G) Shortens the time to reach the equilibrium

(H) None of these

Correct Answer

(B) Lowers the activation energy of reacting molecules
(G) Shortens the time to reach the equilibrium

[#322] A catalyst promoter

(A) Improves the activity of a catalyst

(B) Acts as a catalyst support

(C) Itself has very high activity

(D) All of the above

Correct Answer

(A) Improves the activity of a catalyst

[#323] The equilibrium constant K of a chemical reaction depends on

(A) Temperature only

(B) Pressure only

(C) Temperature and pressure

(D) Ratio of reactants

Correct Answer

(A) Temperature only

[#324] For a heterogenous catalytic reaction, A + B → C, with equimole feed of A and B, the initial rate -r A 0 is invariant with total pressure. The rate controlling step is

(A) Surface $$frac{{{{ ext{K}}_{ ext{C}}}}}{{1 + {{ ext{T}}_{ ext{S}}}}}$$ xa0reaction between absorbed A and B in the gas phase

(B) Surface reaction between absorbed A and absorbed B

(C) Surface reaction between A in the gas phase and absorbed B

(D) Desorption of C

Correct Answer

(D) Desorption of C

[#325] In an ideal P.F.R. at steady state conditions

(A) The composition of reactants remains constant along a flow path

(B) The conversion of the reactant varies from point to point along a flow path

(C) There is no lateral mixing of fluid

(D) There may be diffusion along the flow path

Correct Answer

(B) The conversion of the reactant varies from point to point along a flow path

Chemical Reaction Engineering - Study Mode

[#321] A Catalyst

Correct Answer

[#322] A catalyst promoter

Correct Answer

[#323] The equilibrium constant K of a chemical reaction depends on

Correct Answer

[#324] For a heterogenous catalytic reaction, A + B → C, with equimole feed of A and B, the initial rate -r A 0 is invariant with total pressure. The rate controlling step is

Correct Answer

[#325] In an ideal P.F.R. at steady state conditions

Correct Answer