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Mass Transfer

Mass Transfer
In case of gases, the binary diffusivity is proportional to (where, P = pressure)

1/√P
P
1/P
√P

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Mass Transfer
1 kg of a saturated aqueous solution of a highly soluble component A at 60°C is cooled to 25°C. The solubility limits of A are (0.6 kgA/kg water) at 60°C and (0.2 kgA/kg water) at 25°C. The amount in kg of the crystals formed is

0.4
0.2
0.175
0.25

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Mass Transfer
Calcium ammonium nitrate (a fertiliser) is dried in a __________ dryer.

Rotary
Vacuum
Tunnel
Tray

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Mass Transfer
The process employing desorption of the absorbed solute by a solvent is called

Osmosis
Elution
Sublimation
Reverse osmosis

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Mass Transfer
When both the fluids flow concurrently in an absorber, the slope of the operating line is

- ve
-1
+ ve
1

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Mass Transfer
At __________ reflux, theoretical number of plates in a distillation coloumn is calculated using Fenske-Underwood equation.

Operating
Minimum
Total
Maximum permissible

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