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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

A diathermanous substance _______________ the thermal radiation completely?
A Absorbs
B Reflects
C Transmits
D None of these
Correct Answer: Transmits
Boiling point elevation of a solution of NaOH _____________________?
A Increases rapidly with temperature rise
B Is almost independent of temperature
C Is almost independent of pressure
D Both B. and C
Correct Answer: Both B. and C
Radiant energy received by a body is proportional to (where, d = the distance between the object emitting radiation and that receiving it.) ?
A √d
B d
C d2
D d1.5
Correct Answer: d
Overall thermal resistance for conductive heat transfer through a series of flat resistances is equal to the____________________?
A Maximum resistance in the series
B Sum of all resistances
C Average of all resistances
D Minimum resistance presents in the series
Correct Answer: Sum of all resistances
Prandtl and Reynolds analogy are same, when Prandtl number is____________________?
A 0.5
B 1
C > 2
D 1.5
Correct Answer: 1
Arithmetic mean area can be used in heat transfer problem to calculate the heat flow by conduction through a cylinder which is ____________________?
A Thin walled having the value of Ao Ai/< 2
B Thick walled
C Having the value of Ao/Ai > 2
D Both B. and C.
Correct Answer: Thin walled having the value of Ao Ai/< 2
jH factor for heat transfer is not a function of the _______________ number?
A Reynolds
B Nusselt
C Grashoff
D Both B. & C.
Correct Answer: Both B. & C.
In a heat exchanger, one transfer unit means___________________?
A A section of the exchanger in which change in temperature of one stream equals the average
B The size of the exchanger in which heat transfer rate is 1 kcal/hr
C Both A. and B.
D None of these
Correct Answer: A section of the exchanger in which change in temperature of one stream equals the average
A 2-4 heat exchanger involves__________________?
A Only counter-flow of fluids
B Only parallel-flow of fluids
C Both counter and parallel-flow of the fluids
D Smaller pressure drop compared to 1-2 exchanger
Correct Answer: Both counter and parallel-flow of the fluids
In a shell and tube heat exchanger, the height of 25 percent cut baffles is equal to (where, D = inside diameter of shell) ?
A 0.25 D
B 0.50 D
C 0.75 D
D None of these
Correct Answer: 0.75 D
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