Chemical Engineering MCQs

6108 MCQs  (Page 173 of 611)

Freundlich equation applies to the adsorption of solute from_____________________?
A. Dilute solutions, over a small concentration range
B. Gaseous solutions at high pressure
C. Concentrated solutions
D. None of these
The slope of 9-line is determined by the______________________?
A. Reflux ratio
B. Plate efficiency to be achieved
C. Thermal condition of the feed
D. Relative volatility
The critical moisture content in case of drying indicates the _______________ rate period?
A. Beginning of falling
B. Beginning of constant
C. End of falling
D. None of these
The minimum liquid rate to be used in an absorber corresponds to an operating line_______________________?
A. Of slope = 1
B. Of slope = 0.1
C. Tangential to the equilibrium curve
D. None of these
Powdery materials can be guarded against caking tendency on storage by_________________?
A. Providing irregular grain size
B. Providing minimum percentage of voids
C. Having maximum possible points of contact
D. None of these
In case of physical adsorption, the difference between heat of adsorption and heat of normal condensation is__________________?
A. Equal to the heat of formation of surface compound
B. Equal to the heat of wetting
C. Zero
D. Called integral heat of adsorption
Leaching of uranium ore and gold ore is done in________________________?
A. Centrifugal extractor
B. Pachuca tanks
C. Bollman extractor
D. None of these
For a ternary mixture, in which equilateral triangular co-ordinate is used in leaching and extraction, a _______________ of the equilateral triangular co-ordinates?
A. Binary mixture is represented by the apex
B. Binary mixture is represented by any point inside
C. Ternary mixture is represented by the sides
D. Pure component is represented by the apex