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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

According to Arrhenius equation of temperature dependency of rate constant for an elementary reaction _________________?
A k ∝ √T
B k ∝ e-E/RT
C k ∝ T e-E/RT
D None of these
Correct Answer: k ∝ e-E/RT
When the reaction is dominated by intraparticle diffusion, the apparent order of reaction (nD) as measured is related to the true order (n) as ________________?
A nD = (n + 1)/2
B nD = n/2
C nD = n + 1
D None of these
Correct Answer: nD = (n + 1)/2
Sometimes, batch process is preferred over continuous process, when the product___________________?
A Quality & yield cannot be achieved in continuous processes, because of long residence time
B Sales demand is fluctuating
C Both A. & B.
D Neither A. nor B.
Correct Answer: Both A. & B.
A reversible liquid phase endothermic reaction is to be carried out in a plug flow reactor. For minimum reactor volume, it should be operated such that the temperature along the length ?
A Decreases
B Increases
C Is at the highest allowable temperature throughout
D First increases and then decreases
Correct Answer: Is at the highest allowable temperature throughout
A batch reactor is_______________?
A Suitable for gas-phase reactions on commercial scale
B Suitable for liquid phase reactions involving small production rate
C Least expensive to operate for a given rate
D Most suitable for very large production rate
Correct Answer: Suitable for liquid phase reactions involving small production rate
Radioactive decay follows ______________ order kinetics?
A First
B Second
C Third
D Zero
Correct Answer: First
The single parameter model proposed for describing non-ideal flow is the ____________ model?
A Tank in series
B Dispersion
C Both A. & B.
D Neither A. nor B.
Correct Answer: Both A. & B.
Photochemical reaction rate does not depend significantly on temperature, because____________________?
A It is a reversible reaction
B It is an exothermic reaction
C The energy of reacting molecules exceeds the activation energy by absorption of light
D None of these
Correct Answer: The energy of reacting molecules exceeds the activation energy by absorption of light
A batch reactor is suitable for__________________?
A Achieving cent percent conversion of reactants into products
B Large scale gaseous phase reactions
C Liquid phase reactions
D Obtaining uniform polymerisation products in highly exothermic reactions
Correct Answer: Liquid phase reactions
A backmix reactor_________________?
A Is same as plug-flow reactor
B Is same as ideal stirred tank reactor
C Employs mixing in axial direction only
D Is most suitable for gas phase reaction
Correct Answer: Is same as ideal stirred tank reactor
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