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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

In a distillation column, the minimum residence time for liquid in the downspout is about ______________ seconds?
A 1
B 8
C 80
D 180
Correct Answer: 8
A head comprises of straight flange section, corner torus, section and central dished section. Crown radius and knuckle radius in a head is related respectively to the__________________?
A Central dished section and corner torus section
B Corner torus section and central dished section
C Central dished section and straight flange section
D Straight flange section and corner torus section
Correct Answer: Central dished section and corner torus section
______________ of water makes it a widely used coolant in heat exchangers?
A Low corrosiveness
B Low dirt factor
C High specific heat
D Low viscosity
Correct Answer: High specific heat
Hold up of material in a operating rotary drier is in the range of___________________?
A 0.05 to 0.15
B 0.25 to 0.50
C 0.5 to 0.8
D 0.8 to 0.9
Correct Answer: 0.05 to 0.15
Generally, elliptical dished heads____________________?
A Are manufactured on 2:1 ratio of major to minor axis and is recommended to be used for
B Resist half the pressure rating compared to hemi spherical head provided on the cylindrical
C Are approximately as strong as seamless cylindrical shell having the corresponding I.D and
D All A., B. and C.
Correct Answer: All A., B. and C.
For given number of passes, pitch & tube diameter, the maximum number of tubes that can be accommodated in a shell of tripled inside diameter will be ____________ times?
A About 9
B Considerably more than 9
C Considerably less than 9
D About 3
Correct Answer: Considerably more than 9
The retention time of material in a rotary dryer depends upon its ______________________?
A rpm
B Slope & length
C Flights arrangement
D All A., B. and C.
Correct Answer: All A., B. and C.
Number of evaporators which can be used in service in a multiple effect evaporation system is limited by the__________________?
A Practical limit reached, due to low heat transfer rate because of inadequate temperature
B Economic limit reached, when the plant cost exceeds the saving of steam
C Both A. & B.
D Neither A. nor B.
Correct Answer: Both A. & B.
A high vapour velocity is required for high plate efficiency in a sieve plate column. The satisfactory value of operating vapor velocity for design purpose in sieve plate column is about _______________ percent of the flooding velocity?
A 45
B 60
C 80
D 95
Correct Answer: 80
Tube side heat transfer co-efficient for turbulent flow of liquid through tubes is proportional to___________________?
A G0.2
B G0.5
C G0.8
D G1.5
Correct Answer: G0.8
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