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Mass Transfer

Mass Transfer
An azeotropic mixture is a __________ mixture.

Ternary
None of these
Binary
Constant boiling point

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Mass Transfer
Perforated plate towers are unique for solvent extraction because, they provide

None of these
Better contact of the phase
Higher contact area
Repeated coalescence & redispersion of the drop phase

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Mass Transfer
In gas-liquid contact operation, the number of ideal stages, N = (xa - xb)/(xb - x*b) . This is true when the stripping factor 'S' is

S = ∞
S < 1
S = 1
S > 1

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Mass Transfer
The Kundsen diffusivity is proportional to (where, T = absolute temperature)

T²
T
√T
T⁴

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

Freeze
None of these
Spray
Indirect tray

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Mass Transfer
The value of L/mG ratio for economical absorption operation ranges from

1.25 to 2.0
0.8 to 1.2
0.5 to 0.8
2.5 to 3.5

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