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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)

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

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Mass Transfer
The temperature of water cooled in cooling tower is always __________ temperature of entering air.

Less than the wet bulb
More than the wet bulb
Equal to the wet bulb
Equal to the dry bulb

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Mass Transfer
In case of liquids, the binary diffusivity is proportional to (where, T = temperature)

T
T²
1/T
√T

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Mass Transfer
Heat sensitive materials like certain pharmaceuticals and food stuffs can be dried in a/an __________ dryer.

Spray
Freeze
Indirect tray
None of these

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Mass Transfer
L/mG is the expression for

Slope of operating line in stripper
Brinkman number
Slope of operating line in absorber
Absorption factor

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Mass Transfer
The Reynolds number of the liquid was increased 100 fold for a laminar falling film used for gas-liquid contacting. Assuming penetrating theory is applicable, the fold increase in the mass transfer co-efficient (Kc) for the same sytem is

1
10
5
100

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