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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

(Le/D) for a Tee (used as elbow, entering run) would be around _______________________?
A 5
B 60
C 160
D 200
Correct Answer: 60
Bubble cap tray is the most commonly used tray in large distillation column, because______________?
A Of its flexibility and nearly constant efficiency under varying conditions of operation
B It incurs less pressure drop as compared to any other try designed for the same duty
C It eliminates the foaming and entrainment tendency during operation
D None of these
Correct Answer: Of its flexibility and nearly constant efficiency under varying conditions of operation
Removable connection of tubes to tube sheet is called___________________?
A Ferrule
B Socket
C Nipple
D Saddle
Correct Answer: Ferrule
In a pressure vessel containing multiple openings of various dimensions at different parts, stress concentration at the edges of the opening is maximum which becomes negligibly small beyond the area covered by ______________ times the hole diameter?
A Two
B Five
C Ten
D Twenty
Correct Answer: Two
1.2 to 3.8 cms is the value of the ______________________?
A Downcomer liquid seal in case of a balanced tray design
B Static submergence in case of a bubble cap tray for column operating under pressure (≥ 1 atm)
C Skirt clearance for bubble caps
D All A., B. and C.
Correct Answer: All A., B. and C.
The longitudinal stress induced in a thin walled cylindrical vessel under internal pressure is_________________?
A pd/2t
B pd/4t
C pd/t
D pd/8t
Correct Answer: pd/4t
Scale up problem in design based on the similarity concept takes into account _______________ similarity?
A Geometrical
B Kinematic
C Dynamic
D All A., B. and C.
Correct Answer: All A., B. and C.
For turbulent flow (NRe > 2100) of low viscosity fluid (μ > 20cp) in steel pipes, the optimum inside pipe diameter is given by(where, Q = fluid flow rate, ft3/sec, ρ = fluid density, lb/ft3 μ = fluid viscosity, centipoise Di = optimum inside pipe diameter, inches) ?
A Di, opt = 3.9 Q0.45 ρ0.13
B Di, opt = 3.9 Q0.45. μ0.95
C Di, opt = 4.7 Q0.36. μ3.2ρ0.13
D Di, opt = 3 Q0.36. μ0.88
Correct Answer: Di, opt = 3.9 Q0.45 ρ0.13
If ‘D’ is the inside diameter of the shell of a shell and tube heat exchanger, then the baffle spacing is usually in the range of__________________?
A D/2 or minimum 2″ to 5D
B D/5 or minimum 2″ to 5D
C D/5 or minimum 2″ to D
D None of these
Correct Answer: D/5 or minimum 2″ to 5D
In a shell and tube heat exchanger, the shortest centre to centre distance between the adjacent tubes is__________________?
A Called tube pitch
B Called tube clearance
C Always less than the diameter of the tube
D None of these
Correct Answer: Called tube pitch
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