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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

One mole feed of a binary mixture of a given composition is flash vaporised at a fixed P and T. If Raoult’s law is obeyed, then changing the feed composition would effect ?
A The product composition but not the fraction vaporised
B The product composition as well as the fraction vaporised
C The fraction vaporised but not the product composition
D Neither the product composition nor the fraction vaporised
Correct Answer: The fraction vaporised but not the product composition
The rate of solid-liquid extraction is limited by the_________________?
A Phase change of the solute as it dissolves in the solvent
B Diffusion of the solute through the solvent in the pores to the outside of the particle
C Diffusion of the solute from the solution in contact with the particle to the main bulk of the
D All A , B. & C.
Correct Answer: All A , B. & C.
The rate of mass transfer is not dependent upon the______________________?
A Degree of dispersion of one fluid in the other
B Interfacial surface exposed between the phases
C Both A. & B.
D None of these
Correct Answer: None of these
Gaseous diffusion co-efficient increases with increase in the_____________________?
A Pressure
B Temperature
C Both A. & B.
D Neither A. nor B.
Correct Answer: Temperature
In case of steam distillation, the steam leaving the liquid is not completely saturated with distillate vapour, because_______________?
A Temperature is less
B Total pressure is less
C Mixing of steam with the material being vaporised is not so intimate as to result in equilibrium
D Saturated steam is used for steam distillation
Correct Answer: Mixing of steam with the material being vaporised is not so intimate as to result in equilibrium
_____________ temperature is the steady state temperature attained by a small amount of liquid evaporating into a large quantity of unsaturated gas-vapor mixture ?
A Dry bulb
B Wet bulb
C Dew point
D None of these
Correct Answer: Wet bulb
Heat load in a cooling tower______________________?
A Means the amount of heat thrown away (KCal/hr.) by the cooling tower
B Is equal to the number of kg, of water circulated times the cooling range
C Both A. & B.
D Neither A. nor B.
Correct Answer: Both A. & B.
A good solvent used for absorption should not have very high____________________?
A Viscosity
B Vapor pressure
C Freezing point
D All A., B. & C.
Correct Answer: All A., B. & C.
Dew point of a gas-vapour mixture_____________________?
A Increases with temperature rise
B Decreases with temperature rise
C Decreases with decrease in pressure
D Increases with increase in pressure
Correct Answer: Decreases with decrease in pressure
Deaeration (removal of O2) of water is done by_________________?
A Rectification
B Absorption
C Ion-exchange
D Adsorption
Correct Answer: Ion-exchange
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