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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 stress developed in a material without any permanent set is called the____________________?
A Ultimate stress
B Yield stress
C Elastic limit
D Breaking stress
Correct Answer: Elastic limit
Column support for the roof of cylindrical storage tank must be provided for___________________?
A Small diameter tanks
B Large diameter tanks
C Small diameter tall tanks
D All tanks irrespective of their heights and diameters
Correct Answer: Large diameter tanks
Corrosion allowance in the design of pressure vessel/chemical equipment is not necessary, if___________________?
A Plain carbon steel and cast iron parts are used
B Wall thickness is > 30 mm
C Material of construction is high alloy steel
D Both B. & C.
Correct Answer: Both B. & C.
Height of the flights in the rotary drier is in the range of___________________?
A 0.08 to 0.12 d
B 0.02 to 0.05 d
C 0.2 to 0.5 d
D 0.5 to 0.6 d
Correct Answer: 0.08 to 0.12 d
The function of manholes provided in the shell of a distillation column is to __________________?
A Keep a check on the liquid gradient over the plate by direct visual observation
B Give access to the individual trays for cleaning, maintenance and installation
C Guard against foaming & entrainment by dumping antifoaming agent through it
D All A., B. and C.
Correct Answer: Give access to the individual trays for cleaning, maintenance and installation
Pick out the wrong statement about the design of sieve plate column and the bubble cap column ?
A The downcomer design and the residence time in the downcomer is almost same for sieve
B Weir length for a bubble cap plate is the same as that for the sieve plate
C Weir height for a bubble cap plate column is the same as that for a sieve plate column
D Weir height in case of a bubble cap plate ranges from 50 to 150 mm and is higher than the
Correct Answer: Weir height for a bubble cap plate column is the same as that for a sieve plate column
Back-trapping in a distillation column results due to_________________?
A Low gas velocity
B High gas velocity
C Excessive liquid gradient over the tray
D Low reflux ratio
Correct Answer: Excessive liquid gradient over the tray
For high pressure process equipments/vessels, the connected nozzle should be____________________?
A Welded
B Screwed
C Flanged
D Brazed
Correct Answer: Flanged
Generally, as the length of the liquid path on a tray is increased beyond 5 ft, the overall column efficiency___________________?
A Increases
B Decreases
C Remain same
D May increase or decrease depending upon the plate spacing
Correct Answer: Increases
Of the pressure vessels, with same thickness but different diameters, which one withstands higher pressure ?
A Larger dia vessel
B Smaller dia vessel
C Larger dia long vessel
D Strength of the vessel is same irrespective of the diameter
Correct Answer: Smaller dia vessel
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