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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 flow past a flat plate, if „x‟ is the distance along the plate in the direction of flow, the boundary layer thickness is proportional to________________?
A √x
B 1/√x
C x
D 1/x
Correct Answer: √x
Path followed by water jet issuing from the bottom of a water tank will be a__________________?
A Parabola (vertex being at the opening)
B Hyperbola
C Horizontal straight line
D Zig-zag path (which is geometrically undefined)
Correct Answer: Parabola (vertex being at the opening)
Location of vena-contracta in an orificemeter does not depend upon the________________?
A Type of orifice
B Density, viscosity & compressibility of the fluid
C Ratio of pipe diameter to orifice diameter
D Pipe roughness
Correct Answer: Type of orifice
The maximum head that can be developed by a single impeller is _____________ ft?
A 25
B 100
C 250-300
D 1000
Correct Answer: 25
In case of Venturimeter, friction losses are about _____________ percent of maximum velocity head?
A 2
B 8
C 12
D 20
Correct Answer: 2
Drag co-efficient in hindered settling is _____________ that in free settling?
A Less than
B Equal to
C Not necessarily greater than
D Always greater than
Correct Answer: Always greater than
Working of a _______________ pump characterises mixed flow?
A Turbine
B Piston
C Diaphragm
D None of these
Correct Answer: Turbine
Which of the following options will facilitate the achievement of a very high head (say 30 metres) in case of a centrifugal pump ?
A Increasing the impeller speed and the volute area
B Increasing the number of vanes in the impeller
C Mounting of two or more impellers in series on a single shaft
D Either of A., B. or C.
Correct Answer: Mounting of two or more impellers in series on a single shaft
If in a flow field, between any two points, then the flow must be___________________?
A Steady, incompressible, irrotational
B Steady, compressible, irrotational
C Steady, compressible and along a streamline
D Unsteady, incompressible, irrotational
Correct Answer: Steady, incompressible, irrotational
Characteristic curves for a centrifugal pump plotted against its capacity is shown in the diagram. x, y and z denote respectively_______________?
A Efficiency, head and B.H.P.
B Head, efficiency and B.H.P.
C B.H.P., efficiency and head
D Efficiency, B.H.P. and head
Correct Answer: Head, efficiency and B.H.P.
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