Mass Transfer
In McCabe-Thiele method of theoretical plate calculation for a distillation column, the operating lines of stripping and rectifying sections coincide with the diagonal at __________ reflux.

Maximum permissible
Minimum
Operating
Total

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

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

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