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Mass Transfer

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

1/T
T
T²
√T

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Mass Transfer
The value of NA/(NA + NB), for steady state equimolal counter diffusion of two gases 'A' and 'B' is

1
2
0.5
∞

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Mass Transfer
Small dia distillation column can be a

Packed column
Any of these
Bubble cap
Sieve tray

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Mass Transfer
For a single component absorber, the operating line is straight only when plotted in term of __________ units.

Mole fraction
None of these
Partial pressure
Mole ratio

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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
22190
> 500
43835

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Mass Transfer
What is the reflux ratio at total reflux?

Zero
Unity
Infinity
Data insufficient

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