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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 first order reaction requires two unequal sized CSTR. Which of the following gives higher yield ?

A Large reactor followed by smaller one

B Smaller reactor followed by larger one

C Either of the arrangement A. or B. will give the same yield

D Data insufficient, can’t be predicted

Review Detailed Answer

Correct Answer: Either of the arrangement A. or B. will give the same yield

The rate of a chemical reaction is almost doubled for every 10°C rise in temperature. The rate will increase ______________ times, if the temperature rises from 10 to 100°C?

A 256

B 512

C 112

D 612

Review Detailed Answer

Correct Answer: 512

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

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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

All Topics 9594

All Topics 9594

A first order reaction requires two unequal sized CSTR. Which of the following gives higher yield ?

The rate of a chemical reaction is almost doubled for every 10°C rise in temperature. The rate will increase ______________ times, if the temperature rises from 10 to 100°C?

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?