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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 necessary wall thickness for a metallic storage vessel is a function of the ___________________?
A Ultimate tensile strength (or yield point) of the material and operating temperature
B Operating pressure and welding/joint efficiency
C Diameter of the vessel
D All A., B. and C.
Correct Answer: All A., B. and C.
In distillation columns, bubble caps are held in place over trays by ________________?
A Rivets
B A hold down bar
C Bolts
D Both B. and C.
Correct Answer: Both B. and C.
Log mean temperature difference in case of multi-pass shell and tube heat exchanger is always_________________?
A Less than arithmetic mean value
B More than arithmetic mean value
C More than geometric mean value
D Both B. & C.
Correct Answer: Less than arithmetic mean value
The dust collection efficiency of a cyclone separator_________________?
A Decreases with increase in gas flow rate
B Is inversely proportional to the mass of the dust particle
C Is directly proportional to the radius of the dust particle path
D None of these
Correct Answer: None of these
Baffle spacing is generally _________________ the I.D. of the shell ?
A More than
B Not greater than
C Not less than one fifth of
D Both B. and C.
Correct Answer: Both B. and C.
In the allocated cap area, bubble caps are generally arranged on equilateral triangular pitch. Number of caps fixed on a plate is with a __________________?
A Clearance of 25-75 mm
B Cap pitch of 1.3-2 times the cap diameter
C Either A. or B.
D Neither A. nor B.
Correct Answer: Either A. or B.
In a shell and tube heat exchanger having square pitch, the shell side equivalent diameter is given by (where, P = pitch, d = outside diameter of the tube) ?
A 4(P2 – πd2/4)/πd
B (P2 – rd2/4)/rd
C 4P2/πd
D πd/4P2
Correct Answer: 4(P2 – πd2/4)/πd
For identical operating conditions, the pressure drop over _______________ tray is the highest out of the following?
A Sieve
B Valve
C Counter flow
D Bubble cap
Correct Answer: Bubble cap
Heat transfer co-efficient for a horizontal condenser as compared to a vertical condenser operating under similar conditions is_______________?
A Same
B Less
C About 3 times
D About 0.33 times
Correct Answer: About 3 times
Wind load consideration in the design of a support can be neglected, when the vessel is___________________?
A Tall (say 30 metres), but is full of liquid
B Tall but empty
C Short (< 2 m) and housed indoor
D None of these
Correct Answer: Short (< 2 m) and housed indoor
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