M C Q s D r i v e

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.

The practical representative values of HETP for a number of commercial operations lies within a range of ______________ metre?
A 0.1-0.2
B 0.2-0.5
C 0.4-0.9
D 1.2-1.5
Correct Answer: 0.4-0.9
The minimum tray spacing in distillation column of diameter less than 3 ft is normally _____________ inches?
A 6
B 18
C 24
D 34
Correct Answer: 6
For a cylindrical internally pressurised vessel, which of the following closure types would withstand highest pressure, if each closure is of the same material and thickness ?
A Hemispherical
B Ellipsoidal (2 : 1)
C Conical
D Flat plate
Correct Answer: Ellipsoidal (2 : 1)
In a distillation column, minimum clearance to be maintained between the overflow weir and the last row of the bubble caps is ______________ cms?
A 2.5
B 7.5
C 15
D 20
Correct Answer: 7.5
Joint efficiency (J) for a seamless pipe is_______________?
A 1
B 0.85
C 1.5
D < 0.5
Correct Answer: 1
In condenser, the cooling water is passed in the tube side in a pass arrangement, because________________?
A It reduces heat transfer area
B More thinner tubes can be used
C Pressure drop is reduced
D It makes condenser compact
Correct Answer: It reduces heat transfer area
Maximum allowable vapour velocity in a bubble cap tower is determined by the ____________________?
A Entrainment considerations
B Vapour density
C Diameter of the column
D None of these
Correct Answer: Entrainment considerations
Normally, the ratio of the total riser area to the tower cross sectional area (for bubble cap towers of diameter more than 3 ft) is around_______________?
A 0.4-0.6
B 0.35-0.75
C 0.1-0.2
D 0.55-0.85
Correct Answer: 0.1-0.2
Baffles may be eliminated for_________________?
A Low viscosity liquids (< 200 poise)
B High viscosity liquids (> 600 poise)
C Large diameter tanks
D None of these
Correct Answer: High viscosity liquids (> 600 poise)
An under-designed steam trap will___________________?
A Waste steam
B Destroy itself of acceleration wear due to rapid recycling
C Back up condensate and cause water hammer in steam line
D None of these
Correct Answer: Back up condensate and cause water hammer in steam line