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Mass Transfer

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

T⁴
√T
T²
T

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Mass Transfer
In a binary system, separation is very efficient, when the relative volatility is

0.5
1
> 1
< 1

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Mass Transfer
Out of the following gas-liquid contacting devices, for a given set of operating conditions, gas pressure drop is the least in __________ tower.

Perforated tray
Wetted wall
Bubble cap
Packed

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Mass Transfer
In an absorption coloumn, the flooding velocity for random packing is __________ that for stacked/regular packing.

Equal to
Greater than
Smaller than
Either A, or B ; depends on the type of packing

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Mass Transfer
__________ columns are used for liquid dispersion in a continuous gas phase.

Bubble cap
Sieve plate
Packed
Pulse

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Mass Transfer
The adiabatic saturation curve for a vapour-gas mixture is

Slightly concave upward
Straight line
None of these
Slightly concave downward

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