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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 centre to centre distance between two consecutive baffles in a shell and tube heat exchanger is called the baffle pitch or baffle spacing, which is more than 1/5th the I.D. of the shell. Which of the following is not a function of the baffles ?
A To increase the residence time of shell side fluid
B To provide support to the tube bundle
C To reduce the induced vibration in the tubes
D To increase the tube side heat transfer co-efficient by inducing turbulence
Correct Answer: To increase the tube side heat transfer co-efficient by inducing turbulence
In the design of a paddle agitator, the ratio (paddle dia/tank dia) is normally taken as___________________?
A 0.1
B 0.8
C 0.25
D 0.5
Correct Answer: 0.8
Hoop (circumferential) stress induced in a thin walled ‘Horton Sphere’ used for the storage of liquid ammonia under pressure is____________________?
A pD/2T
B pD/4T
C pD/3T
D pD/6T
Correct Answer: pD/2T
In case of 1.5″ heat exchanger tubes, the inside flow area _____________ with decrease in BWG?
A Increases
B Decreases
C Remains same
D None of these
Correct Answer: Decreases
Hole diameter of the sieve trays in the distillation column ranges from ______________ mm?
A 1 to3
B 4 to 8
C 3 to 12.5
D 12.5 to 18.5
Correct Answer: 3 to 12.5
Pick out the wrong statement pertaining to the design of the distillation column?
A Generally, a skirt clearance of 0.5″ to 1.5′ is recommended to prevent plugging of the slots by
B The purpose of the slot is to disperse the gas into the liquid in the form of small bubbles
C If sufficient slot area is not provided, the gas may pass through the skirt clearance
D None of these
Correct Answer: None of these
The force due to wind load acting on a tall vessel depends upon its___________________?
A Shape
B Outside diameter
C Height
D All A, B. & C.
Correct Answer: All A, B. & C.
Brass valves are usually made for pipe sizes ______________ inches?
A ≤ 1
B ≤ 2
C > 2.5
D > 3.5
Correct Answer: ≤ 2
The normal range of velocity of water in pipes is _______________ m/sec?
A 0.1-0.5
B 1-2
C 10-50
D 15-30
Correct Answer: 1-2
What is the minimum recommended ligament for square pitch arrangement in case of heat exchangers ?
A 6.5 cms
B 6.5 mm
C Equal to tube I.D
D Equal to tube O.D
Correct Answer: 6.5 mm
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