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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.

For the liquid phase zero order irreversible reaction A → B, the conversion of A in a CSTR is found to be 0.3 at a space velocity of 0.1min-1. What will be the conversion for a PFR with a space velocity of 0.2 min-1? Assume that all the other operating conditions are the same for CSTR and PFR ?

A 0.15

B 0.30

C 0.60

D 0.90

Review Detailed Answer

Correct Answer: 0.60

When the density of the reaction mixture is constant in a chemical reaction, the ratio of the mean residence time to space time is__________________?

A > 1

B < 1

C 1

D 0

Review Detailed Answer

Correct Answer: 1

A reaction in which one of the products of reaction acts as a catalyst is called a/an ______________ reaction?

A Catalytic

B Autocatalytic

C Photochemical

D None of these

Review Detailed Answer

Correct Answer: Autocatalytic

Which of the following is an independent variable for a batch tank reactor with uniform concentration and temperature ?

A Time

B Useful volume of the tank

C Diameter of the reactor

D None of these

Review Detailed Answer

Correct Answer: Time

When all the limiting reactant is consumed in the reaction, the operational yield _______________ the relative yield?

A Is greater than

B Is smaller than

C Equals

D Can be either greater or smaller than (depends on the type of reaction)

Review Detailed Answer

Correct Answer: Equals

In flow reactors, the performance equations interrelate the rate of reaction to the___________________?

A Feed rate

B Reactor volume

C Extent of reaction

D All A., B. and C.

Review Detailed Answer

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

In an ideal tubular-flow reactor_________________?

A There is no mixing in longitudinal direction

B Mixing takes place in radial direction

C There is a uniform velocity across the radius

D All A., B. and C.

Review Detailed Answer

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

In a/an ______________ reactor, there is exchange of heat with the surroundings with sizeable temperature variation?

A Adiabatic

B Isothermal

C Non-adiabatic

D None of these

Review Detailed Answer

Correct Answer: Non-adiabatic

When a catalyst increases the rate of forward reaction, the value of rate constant__________________?

A Increases

B Decreases

C Remain same

D Becomes infinite

Review Detailed Answer

Correct Answer: Increases

For nearly isothermal operation involving large reaction time in a liquid-phase reaction, the most suitable reactor is a _________________ reactor?

A Stirred tank

B Tubular flow

C Batch

D Fixed bed

Review Detailed Answer

Correct Answer: Stirred tank

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

All Topics 9594

All Topics 9594

For the liquid phase zero order irreversible reaction A → B, the conversion of A in a CSTR is found to be 0.3 at a space velocity of 0.1min-1. What will be the conversion for a PFR with a space velocity of 0.2 min-1? Assume that all the other operating conditions are the same for CSTR and PFR ?

When the density of the reaction mixture is constant in a chemical reaction, the ratio of the mean residence time to space time is__________________?

A reaction in which one of the products of reaction acts as a catalyst is called a/an ______________ reaction?

Which of the following is an independent variable for a batch tank reactor with uniform concentration and temperature ?

When all the limiting reactant is consumed in the reaction, the operational yield _______________ the relative yield?

In flow reactors, the performance equations interrelate the rate of reaction to the___________________?

In an ideal tubular-flow reactor_________________?

In a/an ______________ reactor, there is exchange of heat with the surroundings with sizeable temperature variation?

When a catalyst increases the rate of forward reaction, the value of rate constant__________________?

For nearly isothermal operation involving large reaction time in a liquid-phase reaction, the most suitable reactor is a _________________ reactor?