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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

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
The stress developed in a material without any permanent set is called the____________________?
A Ultimate stress
B Yield stress
C Elastic limit
D Breaking stress
Correct Answer: Elastic limit
Column support for the roof of cylindrical storage tank must be provided for___________________?
A Small diameter tanks
B Large diameter tanks
C Small diameter tall tanks
D All tanks irrespective of their heights and diameters
Correct Answer: Large diameter tanks
Corrosion allowance in the design of pressure vessel/chemical equipment is not necessary, if___________________?
A Plain carbon steel and cast iron parts are used
B Wall thickness is > 30 mm
C Material of construction is high alloy steel
D Both B. & C.
Correct Answer: Both B. & C.
Height of the flights in the rotary drier is in the range of___________________?
A 0.08 to 0.12 d
B 0.02 to 0.05 d
C 0.2 to 0.5 d
D 0.5 to 0.6 d
Correct Answer: 0.08 to 0.12 d
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