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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 circumferential (hoop) stress in a thin walled cylindrical vessel under internal pressure is______________________?
A pd/2t
B pd/4t
C pd/t
D pd/3t
Correct Answer: pd/2t
Pick out the correct statement___________________?
A Centre to centre distance between two consecutives rivets in a row is called the pitch
B A riveted joint made in overlapping plates is called butt joint
C Hole size drilled in riveted plates is less than the actual size of the rivet
D None of these
Correct Answer: Centre to centre distance between two consecutives rivets in a row is called the pitch
n the agitators, the power required will be changed with the increase of diameter of agitator D. as ____________________?
A
B D5
C D
D D9
Correct Answer: D5
Pressure drop per tray in the atmospheric distillation column is about ________________ psi?
A 0.01 – 0.5
B 0.07 – 0.12
C 0.5 – 1.0
D 1 – 3
Correct Answer: 0.07 – 0.12
In a thin cylindrical shell, the hoop stress is ________________ stress?
A Radial
B Circumferential tensile
C Compressive
D Longitudinal
Correct Answer: Circumferential tensile
The maximum liquid gradient over a tray must not exceed__________________?
A 0.5″ -1.25″
B 2″-3.5″
C 5″
D Half the tray spacing
Correct Answer: 0.5″ -1.25″
In the downcomer of a distillation column, the minimum recommended residence time is about _______________ seconds?
A 2.5
B 5
C 12.5
D 17.5
Correct Answer: 5
Flanges are connected to pipes by _______________________?
A Screwing
B Welding
C Brazing
D All A., B. and C.
Correct Answer: All A., B. and C.
Pick out the wrong statement pertaining to the comparative evaluation of performance of the packed tower and the plate tower ?
A Plate tower is preferred, if interstage cooling is required to remove heats of reaction or
B Plate tower is preferred over packed tower, if the operation involves liquids containing
C The total weight of a dry plate tower is usually much more than that of a dry packed tower
D In operations involving large temperature changes. (e.g. distillation), plate towers are
Correct Answer: The total weight of a dry plate tower is usually much more than that of a dry packed tower
Cylindrical pressure vessels in horizontal condition is generally supported on a ________________ support?
A Lug
B Skirt
C Saddle
D Guy wire
Correct Answer: Saddle
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