Chemical Reaction Engineering - Study Mode

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[#156] In case of a P.F.R., there

(A) May be lateral mixing of fluid

(B) Should not be any mixing along the flow path

(C) Both A and B

(D) Neither A nor B

Correct Answer

[#157] Equilibrium of a chemical reaction as viewed by kinetics is a __________ state.

(A) Dynamic steady

(B) Static steady

(C) Dynamic unsteady

(D) None of these

Correct Answer

(A) Dynamic steady

[#158] Which one is the rate controlling step in a solid-gas non-catalytic reaction occurring at very high temperature?

(A) Pore diffusion

(B) Film diffusion

(C) Ash layer diffusion

(D) Chemical reaction

Correct Answer

(B) Film diffusion

[#159] A first order reaction is to be treated in a series of two mixed reactors. The total volume of the two reactors is minimum, when the reactors are

(A) Equal in size

(B) Of different sizes

(C) Of such size that the ratio of their volumes is < 5

(D) None of these

Correct Answer

(A) Equal in size

[#160] Pick out the correct statement.

Correct Answer

(C) Pressure changes do not change the equilibrium concentrations
(G) A catalyst lowers the activation energy of the reacting molecules
(I) A lower temperature favours the reaction of lower activation energy
(O) The rate constant for a first order reaction does not change on changing the concentration units
(Q) A catalyst does not change AH of the reaction