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 trickle bed reactor is the one, which_________________?

A Has altogether three streams either entering or leaving

B Processes three reactants at different flow rates

C Processes three reactants with same flow rate

D Employs all the three phases (i.e. solid, liquid and gas)

Review Detailed Answer

Correct Answer: Employs all the three phases (i.e. solid, liquid and gas)

The rate of reaction of a/an ______________ reaction is not affected by temperature rise ?

A Autocatalytic

B Photochemical

C Consecutive

D Zero order

Review Detailed Answer

Correct Answer: Photochemical

The energy balance equation over a tubular reactor under transient conditions is________________?

A An ordinary non-linear differential equation

B An algebraic differential equation

C A linear partial differential equation

D A non-linear partial differential equation

Review Detailed Answer

Correct Answer: A linear partial differential equation

Exothermic reactions are best carried out in ________________?

A A CSTR

B CSTR in series

C A plug flow reactor followed by CSTR

D CSTR followed by a plug flow reactor

Review Detailed Answer

Correct Answer: CSTR followed by a plug flow reactor

The experimentally determined overall order of the reaction, A + B → C + D, is two. Then the__________________?

A Reaction is elementary with a molecularity of 2

B Molecularity of the reaction is 2, but the reaction may not be elementary

C Reaction may be elementary with molecularity of 2

D Reaction is elementary but the molecularity may not be 2

Review Detailed Answer

Correct Answer: Reaction is elementary with a molecularity of 2

Backmixing is most predominant in___________________?

A A well stirred batch reactor

B A plug-flow reactor

C A single CSTR

D CSTR’s connected in series

Review Detailed Answer

Correct Answer: A single CSTR

For the chemical reaction X → Y, it is observed that, on doubling the concentration of ‘X’, the reaction rate quadruples. If the reaction rate is proportional to Cx n, then what is the value of „n‟ ?

A 1/4

B 2

C 4

D 16

Review Detailed Answer

Correct Answer: 4

An endothermic second order reaction is carried out in an adiabatic plug flow reactor. The rate of heat generation is ___________________?

A Maximum at the inlet of the reactor

B Maximum at the exit of the reactor

C Maximum at the centre of the reactor

D Constant throughout the reactor

Review Detailed Answer

Correct Answer: Maximum at the inlet of the reactor

The decomposition of A into B is represented by the exothermic reaction, A ⇌ 2B. To achieve maximum decomposition, it is desirable to carry out the reaction ?

A At high P and high T

B At low P and high T

C At low P and low T

D At high P and low T

Review Detailed Answer

Correct Answer: At low P and low T

The excess energy of the reactants required to dissociate into products is known as the ________________ energy?

A Thermal

B Activation

C Threshold

D Binding

Review Detailed Answer

Correct Answer: Activation

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

All Topics 9594

All Topics 9594

A trickle bed reactor is the one, which_________________?

The rate of reaction of a/an ______________ reaction is not affected by temperature rise ?

The energy balance equation over a tubular reactor under transient conditions is________________?

Exothermic reactions are best carried out in ________________?

The experimentally determined overall order of the reaction, A + B → C + D, is two. Then the__________________?

Backmixing is most predominant in___________________?

For the chemical reaction X → Y, it is observed that, on doubling the concentration of ‘X’, the reaction rate quadruples. If the reaction rate is proportional to Cx n, then what is the value of „n‟ ?

An endothermic second order reaction is carried out in an adiabatic plug flow reactor. The rate of heat generation is ___________________?

The decomposition of A into B is represented by the exothermic reaction, A ⇌ 2B. To achieve maximum decomposition, it is desirable to carry out the reaction ?

The excess energy of the reactants required to dissociate into products is known as the ________________ energy?