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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 packed bed absorption column, the channelling will be noted by the ____________________?
A Increase in flow rate
B Sharp drop in pressure drop
C Sharp rise in pressure drop
D None of these
Correct Answer: Sharp drop in pressure drop
Mass transfer co-efficient ‘K’ according to penetration theory varies with mass diffusivity as____________________?
A D0.5
B D
C 1/D
D D1.5
Correct Answer: D0.5
A binary mixture of benzene and cyclohexane is separated by___________________?
A Flash vaporisation
B Extractive distillation
C Solvent extraction
D Ordinary distillation
Correct Answer: Extractive distillation
Plate towers are preferred to packed towers, when large temperature changes are involved, because of the reason that the____________________?
A Packing may be crushed due to thermal expansion/contraction of the components of the
B Pressure drop in the equipment will be very high
C Viscosity variation of the fluids may cause channelling/flooding
D None of these
Correct Answer: Packing may be crushed due to thermal expansion/contraction of the components of the
The expression, y(1 – x)/x(1 – y) is for_____________________?
A Absorption factor
B Relative volatility
C Selectivity
D Murphree efficiency
Correct Answer: Relative volatility
In McCabe-Thiele method, at infinite reflux ratio___________________?
A Number of plates is maximum
B Overhead product is maximum
C Both the operating lines coincide with the diagram
D None of these
Correct Answer: Both the operating lines coincide with the diagram
Weeping in a distillation column_____________________?
A Increases tray efficiency
B Provides large interfacial surface for mass transfer
C Results due to very high gas velocity
D Results due to very low gas velocity
Correct Answer: Results due to very low gas velocity
The ratio of Murphree plate efficiency to point efficiency is 1 in a ______________________ flow model?
A Plug
B Perfectly mixed
C Both A. & B.
D Neither A. nor B.
Correct Answer: Perfectly mixed
The process employing desorption of the absorbed solute by a solvent is called____________________?
A Elution
B Osmosis
C Reverse osmosis
D Sublimation
Correct Answer: Elution
Plate efficiency_______________________?
A Is a function of the mass transfer between liquid and vapour
B Increases due to foaming
C Increases due to liquid entrainment
D Increases due to weeping and dumping of liquid
Correct Answer: Is a function of the mass transfer between liquid and vapour
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