Chemical Reaction Engineering MCQ Questions & Answers

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Each section contains 100 MCQs on Chemical Reaction Engineering .

The importance of diffusion in a catalyst are increased by

A) Large catalyst particle size B) An active surface of the catalyst C) Small pore diameter D) All of the above

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Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

In a semi-batch reactor

A) Velocity of reaction can be controlled B) Maximum conversion can be controlled C) Both the reactants flow counter-currently D) Residence time is constant

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Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

In autocatalytic reactions,

A) One of the reactants acts as a catalyst B) One of the products acts as a catalyst C) Catalysts have very high selectivity D) No catalyst is used

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Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

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

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Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

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

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Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

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

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Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

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

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

Pick out the correct statement.

A) A catalyst speeds up the forward reaction but slows shown the reverse reaction B) Addition of catalyst changes the equilibrium constant C) Pressure changes do not change the equilibrium concentrations D) The composition of equilibrium is changed by catalyst

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Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

For a packed bed reactor; the presence of a long tail in the residence time distribution curve is an indication of

A) Ideal plug flow B) Bypass C) Dead zone D) Chanelling

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Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

The increase in the rate of reaction with temperature is due to

A) Increase in the number of effective collisions B) Decrease in activation energy C) Increase in the average kinetic energy of the reacting molecules D) None of these

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

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Chemical Reaction Engineering MCQ Questions & Answers | Chemical Engineering