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Mass Transfer

Mass Transfer
Rate of leaching increases with increasing

Temperature
Size of the solid
Pressure
Viscosity of solvent

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Mass Transfer
A minimum boiling azeotrope is exemplified by

None of these
Acetone-carbon disulphide
Water-isobutyl alcohol
Toluene-benzene

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Mass Transfer
In the layout plan for a vacuum distillation unit, operating at 60 mm Hg, supported by a barometric condenser, the appropriate place for the location of vacuum drum for collecting the distillate will be

2 metres above the ground
5 metres above ground
10 metres above ground
At ground level

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Mass Transfer
Stage efficiency in a leaching process depends on the

Both A & B
Vapour pressure of the solution
Time of contact between the solid and the solution
Rate of diffusion of the solute through the solid and into the liquid

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Mass Transfer
Which of these columns incurs the lowest pressure drop?

Packed column (with dumped packing)
Pulse column
Bubble plate column
Packed column (with stacked packing)

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Mass Transfer
Ammonia present in the coke oven gas is removed by washing with

Dilute ammoniacal liquor
Caustic solution
Dilute HCl
Ethanolamine

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