M C Q s D r i v e

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.

For ethanol-water system, the lowering of distillate quality from 95% to 92% will cause ______________ plate requirement?
A No change in theoretical
B Marginal decrease in the number of
C Major decrease in the number of
D None of these
Correct Answer: Marginal decrease in the number of
Lewis number (Le) is____________________?
A Sc × Pr
B Pr × St
C Sh × Pr
D St × Sh
Correct Answer: Sc × Pr
In a gas-liquid absorption column, for obtaining the maximum absorption efficiency___________________?
A Liquid stream should be distributed uniformly
B Gas stream should be distributed uniformly
C Both gas as well as liquid streams should be distributed uniformly
D By passing should be completely avoided
Correct Answer: Both gas as well as liquid streams should be distributed uniformly
Powdery materials can be guarded against caking tendency on storage by___________________?
A Providing irregular grain size
B Providing minimum percentage of voids
C Having maximum possible points of contact
D None of these
Correct Answer: None of these
Leaching of uranium ore and gold ore is done in_____________________?
A Centrifugal extractor
B Pachuca tanks
C Bollman extractor
D None of these
Correct Answer: Pachuca tanks
For a ternary mixture, in which equilateral triangular co-ordinate is used in leaching and extraction, a ____________ of the equilateral triangular co-ordinates?
A Binary mixture is represented by the apex
B Binary mixture is represented by any point inside
C Ternary mixture is represented by the sides
D Pure component is represented by the apex
Correct Answer: Pure component is represented by the apex
The slope of the operating line for a single component co-current absorber when plotted in terms of mole ratio units is_____________________?
A 0
B
C -ve
D +ve
Correct Answer: -ve
The minimum liquid rate to be used in an absorber corresponds to an operating line__________________?
A Of slope = 1
B Of slope = 0.1
C Tangential to the equilibrium curve
D None of these
Correct Answer: Tangential to the equilibrium curve
Separation of two volatile liquids by distillation makes use of their___________________?
A Selectivity
B Relative volatility
C Solubility
D Density difference
Correct Answer: Relative volatility
The critical moisture content in case of drying indicates the ________________ rate period?
A Beginning of falling
B Beginning of constant
C End of falling
D None of these
Correct Answer: Beginning of falling