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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.

A gaseous reactant is introduced in a mixed reactor of 3 litres volume at the rate of 1 litre/second. The space time is ______________ seconds?

A 1

B 3

C 1/3

D 32

Review Detailed Answer

Correct Answer: 3

With increase in initial concentration, the fractional conversion of a first order reaction in a given time___________________?

A Increases

B Decreases

C Remain constant

D Unpredictable

Review Detailed Answer

Correct Answer: Remain constant

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

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

All Topics 9594

All Topics 9594

A gaseous reactant is introduced in a mixed reactor of 3 litres volume at the rate of 1 litre/second. The space time is ______________ seconds?

With increase in initial concentration, the fractional conversion of a first order reaction in a given time___________________?

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 ___________________?