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Mass Transfer

Mass Transfer
The fixed cost of a distillation column at minimum reflux ratio is

Minimum
Infinite
Optimum
None of these

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Mass Transfer
1 kg of a saturated aqueous solution of a highly soluble component A at 60°C is cooled to 25°C. The solubility limits of A are (0.6 kgA/kg water) at 60°C and (0.2 kgA/kg water) at 25°C. The amount in kg of the crystals formed is

0.4
0.25
0.175
0.2

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Mass Transfer
Flooding in a column results due to

High temperature
Low pressure drop
Low velocity of the liquid
High pressure drop

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Mass Transfer
Molecular distillation is

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

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Mass Transfer
Equilibrium-moisture curves of different solids

Depend on the humidity of the gas
Are same
Are different
None of these

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Mass Transfer
Which of the following remains constant during sensible cooling process ?

None of the listed here
Specific humidity & Partial pressure of vapour
Partial pressure of vapour
Specific humidity

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