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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

With increase in the shear rate, the apparent viscosity of pseudo-plastic fluids__________________?
A Increases
B Decreases
C Remain same
D May increase or decrease; depends on the magnitude of shear rate
Correct Answer: Decreases
If the discharge of a centrifugal pump is throttled, then its suction lift_______________________?
A Increases
B Decreases
C Remains unchanged
D Data insufficient to predict
Correct Answer: Increases
Kinetic energy of fluid per unit weight represented by the velocity head is given by___________________?
A 2v2/gc
B v2/2gc
C ρv2/gc
D ρ.v2/2gc
Correct Answer: v2/2gc
Water hammer in a pipeline results from the____________________?
A Bursting of pipelines due to closure by a valve
B Rapid pressure change due to a rapid change in the rate of flow
C Pressure increase due to closure of a valve resulting in decrease in rate of flow
D None of these
Correct Answer: Rapid pressure change due to a rapid change in the rate of flow
Mass velocity is independent of temperature & pressure, when the flow is______________________?
A Unsteady through unchanged cross-section
B Steady through changing cross-section
C Steady and the cross-section is unchanged
D Unsteady and the cross-section is changed
Correct Answer: Steady and the cross-section is unchanged
Which of the fluid forces are not considered in the Reynold’s equation of flow ?
A Viscous forces
B Turbulent forces
C Pressure forces
D Compressibility forces
Correct Answer: Compressibility forces
Which of the following pipe bends will incur the largest head loss ?
A U-bend
B 30° bend
C 45° bend
D 90° bend
Correct Answer: U-bend
A differential pressure cell is used for____________________________?
A Measuring small pressure difference in gases
B Measuring small pressure difference in liquids
C Remote recording of pressure difference
D Measuring the difference of the impact & the static pressure
Correct Answer: Remote recording of pressure difference
If ‘x’ is the depth of flow in an open channel of large width, then the hydraulic radius is equal to________________?
A x
B x/2
C x/3
D 2x/3
Correct Answer: x
Boundary layer separation is caused by the_________________?
A Reduction of pressure to vapour pressure
B Boundary layer thickness reducing to zero
C Adverse pressure gradient
D Reduction of pressure gradient to zero
Correct Answer: Reduction of pressure gradient to zero
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