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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

Mach number is defined as the ratio of the local flow velocity to the sonic velocity in the fluid. For what value of Mach number, the gases are considered incompressible ?
A < 0.3
B > 3
C 50
D 1
Correct Answer: < 0.3
Propeller type centrifugal pumps are most suitable for__________________?
A High capacity at high heads
B High capacity at low heads
C Low capacity at high heads
D Low capacity at low heads
Correct Answer: High capacity at low heads
Hydraulic diameter for non-circular ducts is equal to ___________ times the area of flow divided by the perimeter?
A Two
B Three
C Four
D Eight
Correct Answer: Four
Froude number is the ratio of__________________?
A Shear stress to gravitational stress
B Drag stress to shear stress
C Inertial stress to shear stress
D Inertial stress to gravitational stress
Correct Answer: Inertial stress to gravitational stress
A stream line is___________________?
A Fixed in space in steady flow
B Always the path of particle
C Drawn normal to the velocity vector at every point
D A line connecting the mid points of flow cross-section
Correct Answer: Fixed in space in steady flow
Which of the following is used for pumping crude oil from oil well ?
A Single stage centrifugal pump
B Gear pump
C Screw pump
D Duplex/triplex reciprocating pump
Correct Answer: Duplex/triplex reciprocating pump
The buoyant force acting on a floating body is dependent on the _______________?
A Viscosity of the liquid
B Weight of the liquid displaced
C Depth of immersion of the body
D Surface tension of the liquid
Correct Answer: Weight of the liquid displaced
Horsepower requirement for given pump capacity depends upon the_______________?
A Specific gravity of the liquid
B Suction lift
C Discharge head
D All A., B. and C.
Correct Answer: All A., B. and C.
For a given Reynolds number, in a hydraulically smooth pipe, further smoothening ____________ the friction factor?
A Brings about no further reduction of
B Increases
C Decreases
D None of these
Correct Answer: Brings about no further reduction of
Disc compensators are provided in large diameter fuel gas carrying pipelines to_________________?
A Keep the pipe in proper orientation
B Make the pipe joint leak-proof
C Account for contraction/expansion of pipe due to temperature changes of the surroundings
D Account for the pressure variation side the pipeline
Correct Answer: Account for contraction/expansion of pipe due to temperature changes of the surroundings
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