Mass Transfer

A. Is of low volatility
B. Forms a low boiling azeotrope
C. Forms a high boiling azeotrope
D. Does not alter the relative volatility of the original components

A. Slope of the operating line in stripping section decreases
B. Number of plates decreases very slowly first and then more and more rapidly
C. Total cost first decreases and then increases
D. Liquid flow increases while the vapor flow decreases for a system

A. Evaporation
B. Blowdown
C. Entrainment
D. All A., B. & C.

A. Have low weight per unit volume
B. Have large surface area per unit volume
C. Have large free cross-section
D. Hold up large amount of liquid in the packing

A. Greater than that computed for ideality
B. Less than that computed for ideality
C. Less than the sum of the vapour pressure of the components
D. None of these

A. Stanton number
B. Peclet number
C. Thermal diffusivity
D. Momentum diffusivity

A. Mole fractions
B. Mole ratios
C. Partial pressure
D. Mass fractions

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

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
solution
D. All A , B. & C.

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