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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

Power required for mixing Newtonian fluids is a function of the _________________?
A Speed of impeller, diameter of impeller & viscosity
B Density & viscosity of fluid only
C Density of fluid, viscosity of fluid & impeller dia only
D None of these
Correct Answer: None of these
Which of the following properties of a fluid is responsible for offering resistance to shear ?
A Surface tension
B Viscosity
C Specific gravity
D All A., B., and C.
Correct Answer: Viscosity
Higher specific speed (200-500) of a centrifugal pump indicates that the pump is of ______________ flow type?
A Axial
B Radial
C Mixed
D None of these
Correct Answer: Axial
The Mach number for hypersonic flow of compressible fluid is____________________?
A 1
B > 1
C > 4
D < 2
Correct Answer: > 4
Priming is needed in a ______________ pump?
A Reciprocating
B Gear
C Centrifugal
D Diaphragm
Correct Answer: Centrifugal
The head developed by a centrifugal pump is largely determined by the____________________?
A Power of the pump
B Nature of the liquid being pumped
C Angle of the vanes and the speed of the tip of the impeller
D Vapour pressure of the liquid
Correct Answer: Angle of the vanes and the speed of the tip of the impeller
Applying a pressure drop across a capillary results in a volumetric flow rate ‘Q’ under laminar flow conditions. The flow rate for the same pressure drop, in a capillary of the same length but half the radius is____________________?
A Q/2
B Q/4
C Q/8
D Q/16
Correct Answer: Q/16
A stream tube is that, which has ______________________ cross-section entirely bounded by stream lines?
A A circular
B Any convenient
C A small
D A large
Correct Answer: Any convenient
A fluid element has a velocity V = -y2. xi + 2yx2 . j. The motion at (x, y) = (1/√2, 1) is_________________?
A Rotational and incompressible
B Rotational and compressible
C Irrotational and compressible
D Irrotational and incompressible
Correct Answer: Rotational and compressible
Centrifugal compressors compared to reciprocating compressors__________________?
A Require less space
B Have quieter operation
C Have lower operating costs
D All A., B. and C.
Correct Answer: All A., B. and C.
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