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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

Chemical Engineering MCQs designed for job test and interview preparation, particularly for fresh graduates, students, and candidates appearing in competitive exams. These multiple-choice questions cover important topics such as the fundamentals of chemical engineering, chemical processes, chemical reactions, process control, and instrumentation, along with other key concepts in the field.

The molecularity and the order of reaction respectively, for the hydrolysis of methyl acetate in presence of acids are_______________?

A 2 & 1

B 11 & 2

C 2 & 2

D 1 & 1

Review Detailed Answer

Correct Answer: 2 & 1

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

Review Detailed Answer

Correct Answer: Film diffusion

The temperature dependence of reaction rate constant (K) by Arrhenius law is given by_______________?

A K α e-E/RT

B K α eE/RT

C K α T . e-E/RT

D K α √T . e-E/RT

Review Detailed Answer

Correct Answer: K α e-E/RT

In solid catalysed reactions the diffusional effects are more likely to affect the overall rate of reaction for________________?

A Fast reactions in catalyst of small pore diameter

B Fast reaction in catalyst of large pore diameter

C Slow reactions in catalyst of small pore diameter

D Slow reactions in catalyst of large pore diameter

Review Detailed Answer

Correct Answer: Slow reactions in catalyst of small pore diameter

Half-life period for a first order reaction is _____________ the initial concentration of the reactant?

A Directly proportional to

B Inversely proportional to

C Independent of

D None of these

Review Detailed Answer

Correct Answer: Independent of

Recycling back of outlet stream to the reactor from an ideal CSTR carrying out a first order liquid phase reaction will result in ______________ in conversion?

A Decrease

B Increase

C No change

D Either A. or B., depends on the type of reaction

Review Detailed Answer

Correct Answer: No change

In case of a _____________ reactor, the composition in the reactor and at the exit of the reactor is the same ?

A Semi-batch

B Tubular

C Batch

D Back-mix

Review Detailed Answer

Correct Answer: Back-mix

Catalytic action in a catalytic chemical reaction follows from the ability of catalyst to change the ___________________?

A Activation energy

B Equilibrium constant

C Heat of reaction

D None of these

Review Detailed Answer

Correct Answer: Activation energy

Reaction of benzene with chlorine gas to produce tri-chlorobenzene exemplifies a/an ______________ reaction?

A Elementary

B Parallel

C Consecutive

D None of these

Review Detailed Answer

Correct Answer: Consecutive

The eddy diffusivity for a liquid in plug flow must be_________________?

A 1

B 0

C ∞

D Between 0 and 1

Review Detailed Answer

Correct Answer: 0

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

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All Topics 9594

The molecularity and the order of reaction respectively, for the hydrolysis of methyl acetate in presence of acids are_______________?

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

The temperature dependence of reaction rate constant (K) by Arrhenius law is given by_______________?

In solid catalysed reactions the diffusional effects are more likely to affect the overall rate of reaction for________________?

Half-life period for a first order reaction is _____________ the initial concentration of the reactant?

Recycling back of outlet stream to the reactor from an ideal CSTR carrying out a first order liquid phase reaction will result in ______________ in conversion?

In case of a _____________ reactor, the composition in the reactor and at the exit of the reactor is the same ?

Catalytic action in a catalytic chemical reaction follows from the ability of catalyst to change the ___________________?

Reaction of benzene with chlorine gas to produce tri-chlorobenzene exemplifies a/an ______________ reaction?

The eddy diffusivity for a liquid in plug flow must be_________________?