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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

It is not desirable to design a heat exchanger for LMTD correction factor, FT, of less than _________________?
A 0.99
B 0.95
C 0.80
D 0.55
Correct Answer: 0.80
The operating velocity in the absorption tower is usually 40-50% of the flooding velocity. Packed absorption towers are normally designed for a pressure drop of about _________________ mm of water column per metre height of packing?
A 1-5
B 20-40
C 100-150
D 1000-1500
Correct Answer: 20-40
Pressure drop (Δp) and the superficial gas mass velocity (G) in case of packed absorption tower operating in the preloading range are related as_________________?
A Δp = G
B Δp = G0.5
C Δp = G2
D Δp = 1/G0.6
Correct Answer: Δp = G
Fresh water carrying pipelines in chemical industries are coloured with _______________ color?
A Sea green
B Brown
C Yellow
D Red
Correct Answer: Sea green
Holes of a sieve tray are arranged in triangular pitch of _________________ times the hole diameter?
A 1.5 to 2
B 2.5 to 5
C 5 to 10
D 10 to 15
Correct Answer: 2.5 to 5
Tube side pressure drop in a 1-2 heat exchanger (for turbulent flow of fluids through the tubes) is about __________ times, that in a 1-1 heat exchanger having the same size & number of tubes and operated at the same liquid flow rate ?
A 2
B ½
C 4
D 8
Correct Answer: 8
In a multipass shell and tube heat exchanger, the shell side cross flow area does not depend upon______________________?
A Baffle spacing
B Clearance
C Pitch
D None of these
Correct Answer: None of these
Correct use of ‘factor of safety’ is very important in equipment design. It is defined as the ratio of the___________________?
A Ultimate stress to breaking stress
B Ultimate stress to working stress
C Working stress to ultimate stress
D None of these
Correct Answer: Ultimate stress to working stress
For laminar flow (NRe < 2100) in steel pipe, the optimum inside pipe diameter is given by____________________?
A Di, opt = 3 Q0.36 ρ0.18
B Di, opt = 3.9 Q0.45 ρ0.23
C Di, opt = 7.6 Q0.36 ρ0.9
D Di, opt = 3 Q0.36 ρ1.86 μ0.08
Correct Answer: Di, opt = 3 Q0.36 ρ0.18
Which of the following material is seldom used for pressure vessel construction ?
A Rimmed still
B Mild steel
C Killed steel
D Semi-killed steel
Correct Answer: Rimmed still
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