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Mass Transfer

Mass Transfer
Molality is defined as the number of gm moles of solute per __________ of solvent.

Kg
m³
Gm
Litre

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Mass Transfer
Dried finished product sampled from various parts of a __________ dryer exhibits non-uniformity in the moisture content.

Rotary
Freeze
Tray
None of these

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Mass Transfer
NSc/NPr is called the

Lewis number
Psychrometric ratio
Sherwood number
Stantan number

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Mass Transfer
The mass diffusivity, the thermal diffusivity and the eddy momentum diffusivity are same for, NPr = NSc = __________

3
4
2
1

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Mass Transfer
Prandtl number for water at 20°C is about

70
150
7
0.7

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Mass Transfer
Desirable value of absorption factor in an absorber is

0.5
< 1
1
> 1

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