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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

Dry bulb temperature of the gas is _____________ the wet bulb temperature?
A Less than
B More than
C Equal to
D None of these
Correct Answer: More than
Which of the following is not a unit of mass transfer co-efficient ?
A Moles transferred/ [(time) (area) (mole fraction)]
B Moles transferred/ [(time) (area) (mass A/mass B)]
C Moles transferred/ [(time) (area) (pressure)]
D None of these
Correct Answer: None of these
The value of NA/(NA + NB), for steady state equimolal counter diffusion of two gases ‘A’ and ‘B’ is____________?
A 1
B ∞
C 0.5
D 2
Correct Answer: ∞
Rose oil is extracted from rose leaves using ____________ distillation?
A High pressure
B Low pressure
C Extractive
D Steam
Correct Answer: Steam
Back-trapping in a distillation column ?
A Increases tray efficiency
B Decreases tray efficiency
C Reduces pressure drop
D Is desirable, as it provides improved vapour-liquid contact
Correct Answer: Decreases tray efficiency
In the constant rate period of the rate of drying curve for batch drying,_________________?
A Cracks develop on the surface of the solid
B Rate of drying decreases abruptly
C Surface evaporation of unbound moisture occurs
D None of these
Correct Answer: Surface evaporation of unbound moisture occurs
The most economical range of absorption factor is____________________?
A 0 to 0.5
B 0 to 3
C 1.25 to 2
D 5 to 15
Correct Answer: 1.25 to 2
In case of absorption, both the operating and equilibrium lines will be straight for______________?
A Isothermal operation
B Dilute solutions
C Dilute solutions and isothermal operation
D None of these
Correct Answer: Dilute solutions
Bollman extractor___________________?
A Is a static bed leaching equipment
B Is used for extraction of oil from oilseed
C Is a centrifugal extractor
D Employs only counter-current extraction
Correct Answer: Is used for extraction of oil from oilseed
When the solvent dissolves very little of solute, then__________________________?
A Solvent of low latent heat of vaporisation should be used
B Solvent of low freezing point should be used
C Large quantity of solvent is required to extract the solute
D Very small quantity of solvent is required
Correct Answer: Large quantity of solvent is required to extract the solute
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