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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

Check valves are used_______________?
A At high pressure
B In bends
C For controlling water flow
D For unidirectional flow
Correct Answer: For unidirectional flow
The temperature in isentropic flow_______________?
A Does not depend on Mach number
B Depends on Mach number only
C Cannot drop and then increase again downstream
D None of these
Correct Answer: Depends on Mach number only
Pipes having diameter 14 inches or more are designated by their_________________?
A Outside diameter
B Inside diameter
C Schedule number
D None of these
Correct Answer: Outside diameter
Speed of sound in an ideal gas depends on its________________?
A Temperature
B Pressure
C Specific volume
D None of these
Correct Answer: Temperature
For a given Reynold number as d/D for an orifice increases, Cd will (where, d & D are orifice & pipe diameters respectively)?
A Increase
B Decrease
C Remain constant
D Either A. or B.; depends on other factors
Correct Answer: Increase
The ratio of wall drag to total drag in the Stoke’s law range is_________________?
A 0.5
B 1
C 1/3
D 2/3
Correct Answer: 2/3
Turbulent flow generally occurs for cases involving__________________?
A Highly viscous fluid
B Very narrow passages
C Very slow motion
D None of these
Correct Answer: None of these
In an incompressible fluid, the density is____________________?
A Greatly affected by moderate changes in pressure
B Greatly affected only by moderate changes in temperature
C Not affected with moderate change in temperature & pressure
D Sensible to changes in both temperature & pressure
Correct Answer: Not affected with moderate change in temperature & pressure
Reciprocating pumps are not able to compete with the centrifugal pump for industrial use, mainly because these pumps have_____________?
A Very low speeds
B Smaller discharge
C Higher capital &maintenance cost
D High vibrations
Correct Answer: Higher capital &maintenance cost
Check in a centrifugal pump is________________?
A Provided in the discharge line
B Generally a globe valve
C Provided to prevent liquid from backing up through the pump when the pump is turned off or
D All A., B. and C.
Correct Answer: All A., B. and C.
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