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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 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

The knowledge of initial concentration and rate constant is necessary to determine the half life time of a reaction of _______________ order?

A Zero

B First

C Second

D None of these

Review Detailed Answer

Correct Answer: Second

An endothermic aqueous phase first order irreversible reaction is carried out in an adiabatic plug flow reactor. The rate of reaction ?

A Is maximum at the inlet of the reactor

B Goes through a maximum along the length of the reactor

C Goes through a minimum along the length of the reactor

D Is maximum at the exit of the reactor

Review Detailed Answer

Correct Answer: Is maximum at the inlet of the reactor

Which of the following factors control the deactivation of a porous catalyst pellet?

A Decay reactions

B Pore diffusion

C Form of surface attack by poison

D All A., B. and C.

Review Detailed Answer

Correct Answer: All A., B. and C.

Carbon particles accumulated on the catalyst used in the gas oil cracking lies in the category of _____________________ poison?

A Deposited

B Chemisorbed

C Selectivity

D Stability

Review Detailed Answer

Correct Answer: Deposited

For an ideal plug flow reactor, the value of Peclet number is_______________?

A 0

B 1

C 10

D ∞

Review Detailed Answer

Correct Answer: 0

In a reversible reaction, a catalyst increases the rate of forward reaction__________________?

A Only

B To a greater extent than that of the backward reaction

C And decreases that of the backward reaction

D And the backward reaction equally

Review Detailed Answer

Correct Answer: And the backward reaction equally

In an ideal mixed reactor (at steady state), the ___________________?

A Space time is equivalent to holding time for constant density systems

B Composition throughout the reactor remains same

C Exit stream has the same composition as the fluid within the reactor

D All A., B. and C.

Review Detailed Answer

Correct Answer: All A., B. and C.

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 A., B. and C.

Review Detailed Answer

Correct Answer: All A., B. and C.

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

All Topics 9594

All Topics 9594

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?

The knowledge of initial concentration and rate constant is necessary to determine the half life time of a reaction of _______________ order?

An endothermic aqueous phase first order irreversible reaction is carried out in an adiabatic plug flow reactor. The rate of reaction ?

Which of the following factors control the deactivation of a porous catalyst pellet?

Carbon particles accumulated on the catalyst used in the gas oil cracking lies in the category of _____________________ poison?

For an ideal plug flow reactor, the value of Peclet number is_______________?

In a reversible reaction, a catalyst increases the rate of forward reaction__________________?

In an ideal mixed reactor (at steady state), the ___________________?

The importance of diffusion in a catalyst are increased by ____________________?