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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

For _______________ drying, the effects of velocity, temperature and humidity of the gas and the thickness of the solid are the same?
A Unsaturated surface
B Constant rate
C Both A. and B.
D Neither A. nor B.
Correct Answer: Both A. and B.
Rate of leaching increases with increasing______________________?
A Temperature
B Viscosity of solvent
C Pressure
D Size of the solid
Correct Answer: Temperature
The term “cooling range” in a cooling tower refers to the difference in the temperature of____________________?
A Cold water leaving the tower and the wet bulb temperature of the surrounding air
B Hot water entering the tower and the wet bulb temperature of the surrounding air
C Hot water entering the tower and the cooled water leaving the tower
D None of these
Correct Answer: Hot water entering the tower and the cooled water leaving the tower
When the liquid over a plate is of uniform concentration, then ______________________?
A Murphree efficiency > point efficiency
B Murphree efficiency < point efficiency
C Murphree efficiency = point efficiency
D Murphree efficiency ≠ point efficiency
Correct Answer: Murphree efficiency = point efficiency
The dimension of diffusivity is same as that of the__________________?
A Density
B Molal concentration
C Kinematic viscosity
D Velocity head
Correct Answer: Kinematic viscosity
Diffusion in concentrated solutions differs from that in dilute solutions, because of the change in the _______________ with the concentration of the solution?
A Degree of ideality
B Viscosity
C Both A & B
D Neither A nor B
Correct Answer: Both A & B
At minimum reflux ratio for a given separation__________________?
A Number of plates is zero
B Number of plates is infinity
C Minimum number of the theoretical plates is required
D Separation is most efficient
Correct Answer: Number of plates is infinity
In the desorption of highly soluble gas from the liquid, the main resistance will be in the ______________ phase?
A Gas
B Liquid
C Both A. & B.
D Neither A. nor B.
Correct Answer: Liquid
Which of the following is the most suitable for extraction in a system having very low density difference ?
A Mixer-settler extractor
B Centrifugal extractor
C Pulsed extractor
D Packed extraction tower
Correct Answer: Centrifugal extractor
What is the reflux ratio at total reflux ?
A Zero
B Infinity
C Unity
D Data insufficient
Correct Answer: Infinity
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