Chemical Engineering MCQs

6108 MCQs  (Page 207 of 611)

Steady state equimolal counter diffusion occurs in case of ____________________?
A. Leaching
B. Absorption
C. Binary phase distillation
D. Liquid-liquid extraction
In case of an absorber, the operating _______________?
A. Line always lies above the equilibrium curve
B. Line always lies below the equilibrium curve
C. Line can be either above or below the equilibrium curve
D. Velocity is more than the loading velocity
Radioactive nuclear waste is treated in____________________?
A. Mixer-settler extractor
B. Rotating-disc contactor
C. Pulsed column extractor
D. Bollman extractor
Langmuir equation is associated with________________________?
A. Leaching
B. Adsorption
C. Steam distillation
D. Multi-component absorption
Which of the following is an undesirable property for an absorbing solvent ?
A. Low vapour pressure
B. Low velocity
C. Low freezing point
D. None of these
Raoult’s law applies to the___________________?
A. All liquid solutions
B. Non-ideal solution only
C. Non-volatile solute
D. Solvents
A packed tower compared to a plate tower for a particular mass transfer operation__________________?
A. Incurs smaller pressure drop
B. Allows installation of cooling coils
C. Is less costly when built in large sizes/diameters
D. Is more suitable, if suspended solids are present in fluid streams