M C Q s D r i v e

Chemical Engineering Mcqs 9594 MCQs [All-Courses]

thumb

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.

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
Excessive liquid gradient on a tray may result in the______________________?
A Maldistribution of gas
B Back trapping
C Gas blowing beneath cap skit
D All A., B. and C.
Correct Answer: All A., B. and C.
The ideal size of round bubble caps to be used in industrial distillation column having a diameter of 3-6 metres is ________________ cms?
A 5
B 15
C 7.5
D 50
Correct Answer: 5
In packed towers provided with saddle packing, liquid redistributors are positioned at every _______________ times column diameter or 6 metres whichever is less?
A 2-3
B 5-8
C 10-15
D 20-25
Correct Answer: 5-8
Nominal size of a pipe is an indication of its _______________ diameter?
A Inner
B Outer
C Approximate
D None of these
Correct Answer: Approximate