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Mass Transfer

Mass Transfer
Molality is defined as the number of gm moles of solute per __________ of solvent.

Gm
Litre
m³
Kg

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Mass Transfer
Paper industry employs __________ driers.

Spray
Fluidised bed
Cylinder
Rotary

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Mass Transfer
Condensation of a vapour-gas mixture just begins, when (where, p = partial pressure of the vapour P = vapour pressure of the liquid )

P = P
P < P
P
P >>P

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Mass Transfer
The caking of crystals can be prevented by

Maintaining high critical humidity
Coating the product with inert material
Both A and C
Maintaining low critical humidity

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Mass Transfer
In a solution containing 0.30 Kg mole of solute and 600 kg of solvent, the molality is

0.5
2
0.6
1

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Mass Transfer
For a binary mixture with low relative volatility, continuous rectification to get pure products will require

High reflux ratio
Low reflux ratio
Small cross-section column
Less number of trays

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