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Mass Transfer

Mass Transfer
At 750°K and 1 atm, the approximate value of Schmidt number for air is

1
10
0.01
0.1

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Mass Transfer
The dimension of diffusivity is same as that of the

Velocity head
Density
Molal concentration
Kinematic viscosity

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Mass Transfer
For achieving rapid drying rate in a spray dryer, the diameter of the particles in the feed should be in the range of __________ microns (1 mm = 1000 microns).

200-300
> 500
22190
43835

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Mass Transfer
The film penetration model of mass transfer was enunciated by

Toor and Marchello
Fick
Stefan
Gilliland

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Mass Transfer
Tea percolation employs

Absorption
None of these
Leaching
Liquid-liquid extraction

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Mass Transfer
For gas absorption, low viscosity solvents are preferred, because of their

Better flow characteristics
Low pumping pressure drop
All of these
Rapid absorption rates

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