Mass Transfer
Steam distillation is used for separation of high boiling

none of the listed here
Both of the options given here
Substances from non-volatile impurities
Volatile impurity from still higher boiling substances

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Mass Transfer
The rate of solid-liquid extraction is limited by the

Diffusion of the solute from the solution in contact with the particle to the main bulk of the solution
Phase change of the solute as it dissolves in the solvent
All of these
Diffusion of the solute through the solvent in the pores to the outside of the particle

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Mass Transfer
Pick out the wrong statement. Raoult's law does not apply, when the

Chemical combination or molecular association between unlike molecules takes place in the formation of solution
Attractive forces between like and unlike molecules in the solution are approximately equal
Size of component molecules are not equal
Component molecules are nonpolar

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