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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

The most common standard size of bubble caps used in industrial operation is___________________?
A 1″ dia cap with 0.5″ dia riser
B 6″ dia cap with 4″ dia riser
C 8″ dia cap with 1″ dia riser
D 4″ dia cap with 8″ dia riser
Correct Answer: 6″ dia cap with 4″ dia riser
Minimum baffle spacing recommended in a shell and tube heat exchanger is equal to _____________________?
A 5 cms
B 40% of the I.D. of the shell
C 25 cms
D I.D. of the shell
Correct Answer: 5 cms
Overall mass transfer co-efficient in case of absorption of __________ in water is based on the gas film co-efficient only, as the mass transfer process is gas film (phase) controlling ?
A CO2
B SO2
C NH3
D None of these
Correct Answer: NH3
The slope of operating line in the rectifying section of a distillation column is unity, if the reflux ratio is___________________?
A 0
B ∞
C 1
D Minimum
Correct Answer: ∞
Commercial packed scrubbers are normally designed for a pressure drop range of ______________ mm water column per metre of packed height?
A 4-8
B 17-34
C 52-68
D 88-105
Correct Answer: 17-34
For turbine agitator, the impeller diameter is about_________________?
A 0.3 to 0.5 d
B 0.1 to 0.2 d
C 0.65 to 0.85 d
D 0.95 d
Correct Answer: 0.3 to 0.5 d
The optimum size ratio for two mixed reactors in series depends on the kinetics of the reaction and the conversion level. For reaction orders more than one, the_________________?
A Equal sized reactors are the best
B Smaller reactor should come first
C Larger reactor should come first
D None of these
Correct Answer: Smaller reactor should come first
Circumferential (hoop) stress in a thin cylindrical vessel under internal pressure is _____________ the longitudinal stress?
A Half
B Equal to
C Twice
D Eight times
Correct Answer: Twice
The thickness of heat transfer plates used in the plate type heat exchanger ranges from _____________ mm, pressed in a single piece provided with grooves & corrugations?
A 0.3 to 0.8
B 1.25 to 3.125
C 3.5 to 7.0
D 8 to12
Correct Answer: 1.25 to 3.125
The ratio of down take area to cross-sectional area of the tube, for calandria type evaporator ranges from_________________?
A 0.5 to 1
B 1 to 1.5
C 1.5 to 2
D 2 to 2.5
Correct Answer: 0.5 to 1
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