Related Questions

In an interphase heat transfer process, the equilibrium state corresponds to equality of temperature in the two phases, while the condition for equilibrium in an interphase mass transfer process is equality of
A Concentrations
B Chemical potentials
C Activity co-efficients
D Mass transfer co-efficients
An increase in the liquid resistance to interphase mass transfer and a resultant reduction in plate efficiency is caused by
A An increase in liquid viscosity
B An increase in relatived volatility for rectification columns
C Decrease in gas solubility for absorbers
D All of the above
In case of a ternery system involving two liquid components and a solute, the ratio of the concentration of the solute in the two phases at equilibrium is called the distribution co-efficient. The distribution co-efficient depends upon the
A Solute concentration
B Temperature
C Both A & B
D Neither A nor B
For most salts, the solubility increases with rise in temperature, but the solubility of __________ is nearly independent of temperature rise.
A Sodium chloride
B Sodium carbonate monohydrate
C Anhydrous sodium sulphate
D Hypo
Sodium __________ has inverted solubility curve i.e. its solubility increases with the lowering of temperature.
A Carbonate (monohydrate)
B Chloride
C Thiosulphate
D Bisulphite
The mass transfer co-efficient for a solid sphere of radius 'a' dissolving in a large volume of quiescent liquid, in which D is the diffusivity of solute, is
A D/a
B D/2a
C Proportional to $$\sqrt {\text{D}} $$
D Dependent on the Reynolds number
Which of the following has the least (almost negligible) effect on the solubility of a solute in a solvent?
A Temperature
B Nature of solute
C Pressure
D Nature of solvent
Which of the following has the smallest least effect on the solubility of a solute into the solvent?
A Nature of the solute
B Nature of the solvent
C Temperature
D Pressure
The interphase is
A A resting stage between cell division
B Associated with growth of a cell
C Accompanied by the accumulation of RNA
D Situated between the prophase and metaphase
E Situated between the anaphase and the telophase
Which event occurs during interphase?
A Centrioles appear
B Spindle fibers begin to form
C The cell grows
D Centromeres divide

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