Mass Transfer

A. μ/ρDAB
B. Re × Pe
C. Sh × Pe
D. Re/Pe

A. Higbie
B. Fick
C. Ergun
D. Levenspiel

A. Provides poorer contact between the fluids
B. Gives lower pressure drop
C. Both A. and B.
D. Gives higher pressure drop

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

A. All liquid solutions
B. Non-ideal solution only
C. Non-volatile solute
D. Solvents

A. Low vapour pressure
B. Low velocity
C. Low freezing point
D. None of these

A. Leaching
B. Adsorption
C. Steam distillation
D. Multi-component absorption

A. Mixer-settler extractor
B. Rotating-disc contactor
C. Pulsed column extractor
D. Bollman extractor

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

A. Tunnel
B. Tray
C. Rotary
D. None of these