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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

In case of unsaturated air_________________?
A Dew point < wet bulb temperature
B Wet bulb temperature < dry bulb temperature
C Both A. and B.
D Neither A. not B.
Correct Answer: Both A. and B.
Minimum reflux ratio in a distillation column results in_____________________?
A Optimum number of trays
B Minimum reboiler size
C Maximum condenser size
D Minimum number of trays
Correct Answer: Maximum condenser size
High pressure at the bottom of a distillation tower handling heat sensitive materials results in____________________?
A Thermal decomposition of bottoms
B Increased relative volatility
C Erosion of the tower
D Very efficient operation
Correct Answer: Thermal decomposition of bottoms
In the layout plan for a vacuum distillation unit, operating at 60 mm Hg, supported by a barometric condenser, the appropriate place for the location of vacuum drum for collecting the distillate will be___________________?
A At ground level
B 2 metres above the ground
C 5 metres above ground
D 10 metres above ground
Correct Answer: At ground level
Measurement of the interfacial area of mass transfer is achieved easily & accurately in case of a _______________ column?
A Spray
B Packed
C Bubble cap plate
D Wetted wall
Correct Answer: Wetted wall
At the boiling point of the liquid at the prevailing pressure, the saturated absolute humidity becomes_____________________?
A 1
B 0
C ∞
D None of these
Correct Answer: ∞
Which of the following provides maximum contact surface for a liquid-vapour system ?
A Packed tower
B Bubble-cap plate column
C Sieve-plate column
D Wetted wall column
Correct Answer: Packed tower
Experimental determination of ________________ is done by wetted wall column method?
A Diffusion co-efficient
B Mass transfer co-efficient
C NTU
D None of these
Correct Answer: Mass transfer co-efficient
Which is not concerned directly with mass transfer ?
A Schmidt number
B Sherwood number
C Lewis relationship
D Froude number
Correct Answer: Froude number
For ethanol-water system, the lowering of distillate quality from 95% to 92% will cause ______________ plate requirement?
A No change in theoretical
B Marginal decrease in the number of
C Major decrease in the number of
D None of these
Correct Answer: Marginal decrease in the number of
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