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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

Pressure drop (Δp) for a fluid flowing in turbulent flow through a pipe is a function of velocity (V) as___________________?
A V1.8
B V-0.2
C V2.7
D V2
Correct Answer: V2
Lower BWG means _____________ of the tube?
A Lower thickness
B Lower cross-section
C Outer diameter
D Inner diameter
Correct Answer: Lower cross-section
What is the maximum theoretical suction lift (metres) of a reciprocating pump ?
A 5
B 10
C 50
D 100
Correct Answer: 10
In isotropic turbulence, the _____________ are equal to each other?
A Temporal velocity components
B Mean square of velocity fluctuations in the three co-ordinate directions
C Root mean square of velocity fluctuations in the three co-ordinate directions
D None of these
Correct Answer: Mean square of velocity fluctuations in the three co-ordinate directions
Purpose of relief valve in a reciprocating pump is to___________________?
A Protect the pump against developing excessive pressure
B Facilitate unidirectional flow of liquid
C Reduce the discharge pressure
D Control the rate of discharge
Correct Answer: Protect the pump against developing excessive pressure
Power required by a centrifugal pump is proportional to (where, D = diameter, N = r.p.m) ________________?
A N2D3
B ND2
C N2D
D N3D5
Correct Answer: N3D5
Drag is defined as the force exerted by the___________________?
A Fluid on the solid in a direction opposite to flow
B Fluid on the solid in the direction of flow
C Solid on the fluid
D None of these
Correct Answer: Fluid on the solid in the direction of flow
One poise (unit of absolute/dynamic viscosity) is equivalent to one_____________________?
A gm/cm2. sec
B gm/cm. sec
C cm2/sec
D m2/sec
Correct Answer: gm/cm. sec
With increase in molecular weight of the gas, the head developed by a centrifugal compressor will________________?
A Decrease
B Increase
C Remain same
D Unpredictable
Correct Answer: Decrease
In case of a pipe exit fitted with a nozzle, the____________________?
A Conversion of kinetic head to pressure head is facilitated
B Conversion of pressure head to kinetic head is facilitated
C Power transmitted through the nozzle is maximum, when the head lost due to friction in the
D Both B. and C.
Correct Answer: Both B. and C.
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