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Mass Transfer

Mass Transfer
The dew point of a saturated gas phase equals the __________ temperature.

Room
Gas
Wet bulb
None of these

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Mass Transfer
The relative volatility of a binary mixture at the azeotropic composition is

> 1
1
∞

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Mass Transfer
When the temperature and humidity of air is low, we usually use __________ draft cooling tower.

None of these
Forced
Induced
Natural

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Mass Transfer
In paper industry, paper is dried in a __________ dryer.

Festoon
Heated cylinder
Conveyor
Tunnel

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Mass Transfer
Molecular distillation is

High temperature distillation
Both B and C
Very low pressure distillation
For heat-sensitive materials

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Mass Transfer
For the gas absorption, the height of a transfer unit, based on the gas phase is given by (G: superficial molar gas velocity, L: superficial molar liquid velocity, FG:mass transfer co-efficient, mols/m² , a: in-terfacial area per unit volume of tower)

(G.a)/FG
F/(FG.a)
FG/(G.a)
L/(FG.G)

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