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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

Film boiling is usually not desired in commercial equipments, because____________________?
A The heat transfer rate is low in view of the large temperature drop
B It is difficult to maintain
C It is not economic
D None of these
Correct Answer: The heat transfer rate is low in view of the large temperature drop
The advantage of backward feed multiple effect evaporators over forward feed units is that___________________?
A Heat sensitive material can be handled
B There is no additional cost of pumping
C Most concentrated liquid is at highest temperature
D Equal heat transfer co-efficients exist in various effects
Correct Answer: Most concentrated liquid is at highest temperature
In case of a multipass shell and tube heat exchanger, providing a baffle on the shell side ______________ the heat transfer rate?
A Increases
B Decreases
C Does not affect
D May increase or decrease, depends on the type of baffle
Correct Answer: Increases
With the increase of temperature, the Col-burn jH factor_____________________?
A Increases
B Decreases
C Remains unchanged
D May increase or decrease; depending on temperature
Correct Answer: Increases
Electromagnetic radiations propagate in vacuum with a velocity of _______________ metre/second?
A 3 × 105
B 3 × 108
C 3 × 1010
D 3 × 1012
Correct Answer: 3 × 108
In a heat exchanger, floating head is provided to____________________?
A Facilitate cleaning of the exchanger
B Increase the heat transfer area
C Relieve stresses caused by thermal expansion
D Increase log mean temperature gradient
Correct Answer: Relieve stresses caused by thermal expansion
Which of the following accessories is provided in the vapor line of an evaporator for removing the entrained liquid ?
A Bleed point
B Vent
C Catchall
D Baffle
Correct Answer: Catchall
The equivalent diameter for pressure drop is ________________ that for heat transfer?
A Smaller than
B Greater than
C Equal to
D Not related with
Correct Answer: Smaller than
As the difference between the wall temperature and bulk temperature increases, the boiling heat transfer co-efficient ?
A Continues to increase
B Continues to decrease
C Goes through a minimum
D Goes through a maximum
Correct Answer: Goes through a minimum
Fouling factor_____________________?
A Is a dimensionless quantity
B Does not provide a safety factor for design
C Accounts for additional resistances to heat flow
D None of these
Correct Answer: Accounts for additional resistances to heat flow
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