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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

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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.

All Topics  9594

In a semi-batch reactor _____________________?
A Velocity of reaction can be controlled
B Maximum conversion can be controlled
C Both the reactants flow counter-currently
D Residence time is constant
Correct Answer: Velocity of reaction can be controlled
The catalytic converter for conversion of SO2 to SO3 by contact process should have a feed with SO2 content between___________________?
A 2-5 %
B 7-10 %
C 12-15 %
D 20-25 %
Correct Answer: 7-10 %
For a first order chemical reaction in a porous catalyst, the Thiele modulus is 10. The effectiveness factor is approximately equal to ____________________?
A 0
B 1
C 0.1
D 0.5
Correct Answer: 0
The rate constant of a chemical reaction increases by 100 times when the temperature is increased from 400 °K to 500 °K. Assuming transition state theory is valid, the value of „E/R’ is __________________?
A 8987°K
B 9210°K
C 8764°K
D 8621°K
Correct Answer: 9210°K
Most important characteristics of gas-liquid reactors are the________________?
A Specific inter-facial area
B Liquid hold-up
C Both A. and B.
D None of these
Correct Answer: Both A. and B.
The reaction between oxygen and organic material is a/an _____________ reaction?
A Exothermic
B Endothermic
C Biochemical
D Photochemical
Correct Answer: Exothermic
Which of the following is not a theory of homogeneous reaction ?
A Collision theory and activated complex theory
B Chain reaction theory
C Radiation hypothesis
D None of these
Correct Answer: None of these
6 gm of carbon is burnt with an amount of air containing 18 gm oxygen. The product contains 16.5 gms CO2 and 2.8 gms CO besides other constituents. What is the degree of conversion on the basis of disappearance of limiting reactant ?
A 100%
B 95%
C 75%
D 20%
Correct Answer: 95%
A first order reaction requires two equal sized CSTR. The conversion is____________________?
A Less when they are connected in series
B More when they are connected in series
C More when they are connected in parallel
D Same whether they are connected in series or in parallel
Correct Answer: More when they are connected in series
The optimum performance for reactors operating in parallel is obtained when the feed stream is distributed in such a way, that the_________________?
A Space time for each parallel line is same
B Space time for parallel lines is different
C Larger reactors have more space time compared to smaller ones
D None of these
Correct Answer: Space time for each parallel line is same
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