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Mass Transfer

Mass Transfer
The absorption factor is defined as (where, L = liquid flow rate, G = gas flow rate and, m = slope of the equilibrium line)

L/mG
ML/G
G/mL
LG/m

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Mass Transfer
Lewis number, which is important in problems involving simultaneous heat and mass transfer, is the ratio of

Thermal diffusivity to mass diffusivity
None of these
Momentum diffusivity to thermal diffusivity
Mass diffusivity to momentum diffusivity

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

Vacuum
Rotary
Tray
Tunnel

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Mass Transfer
In a solution containing 0.30 Kg mole of solute and 600 kg of solvent, the molality is

0.5
2
1
0.6

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Mass Transfer
Extraction of pencillin employs a __________ extraction coloumn.

Plate
Packed
Centrifugal
None of these

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Mass Transfer
In a packed bed absorption column, the channelling will be noted by the

None of these
Sharp rise in pressure drop
Increase in flow rate
Sharp drop in pressure drop

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