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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

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
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