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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

To reduce the tube side pressure drop for the same flow rate, the heat exchanger recommended is _______________?
A 1-2 heat exchanger
B 1-1 heat exchanger
C 3-2 heat exchanger
D 2-4 heat exchanger
Correct Answer: 1-1 heat exchanger
In case of _______________ boiling, the liquid temperature is below the saturation temperature and the boiling takes place in the vicinity of the heated surface?
A Nucleate
B Local
C Pool
D Saturated
Correct Answer: Local
For _______________ Prandtl number values, the heat conduction will be negligible in the buffer zone?
A Extremely low
B Low
C High
D No
Correct Answer: High
Terminal point temperature differences between fluids in case of a heat exchanger is termed as__________________?
A Approach
B Log mean temperature difference
C Arithmetic mean temperature difference
D Geometric mean temperature difference
Correct Answer: Approach
A composite wall consists of two plates A and B placed in series normal to the flow of heat. The thermal conductivities are kA and kB and the specific heat capacities are CPA and CPB for plates A and B respectively. Plate B has twice the thickness of plate A. At steady state, the temperature difference across plate A is greater than that across plate B, when_________________?
A CPA > CPB
B CPA < CPB
C kA < 0.5 kB
D kA >2 kB
Correct Answer: kA < 0.5 kB
Overall heat transfer co-efficient of a particular tube is U1. If the same tube with some dirt deposited on either side has coefficient U2, then_________________?
A U1 = U2
B U2 > U1
C U1 > U2
D U1 = dirt factor – U2
Correct Answer: U1 = U2
Maximum heat transfer rate is achieved in _____________ flow?
A Co-current
B Counter-current
C Turbulent
D Laminar
Correct Answer: Turbulent
Radiator of an automobile engine is a ______________ type of heat exchanger?
A Co-current
B Cross-current
C Counter-current
D Direct contact
Correct Answer: Direct contact
In forced convection, the Nusselt number is a function of ____________________?
A Re and Pr
B Re and Gr
C Pr and Gr
D Re and Sc
Correct Answer: Re and Pr
In a shell and tube type heat exchanger, the floating tube bundle heat arrangement is used________________?
A In low range of temperature differences
B In high range of temperature differences
C Because of its low cost
D To prevent corrosion of the tube bundles
Correct Answer: In high range of temperature differences
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