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Mass Transfer

Mass Transfer
In case of gases, the binary diffusivity is proportional to (where, P = pressure)

1/√P
√P
P
1/P

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Mass Transfer
Large scale drying of sugar is done in a __________ dryer.

Spouted bed
Rotary
Truck
Tray

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Mass Transfer
Equilibrium-moisture curves of different solids

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

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Mass Transfer
In a distillation column, with increase in the reflux ratio, the heat removed in the cooler

Decreases
Increases
Remains unaffected
And the heat required in reboiler decreases

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Mass Transfer
Diameter to height ratio for a rashig ring is

2
5
0.5
1

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Mass Transfer
To increase the absorption factor, (where, G = gas flow rate, S = solvent flow rate)

Decrease both 'G' and 'S'
Increase both 'G' and 'S'
Increase 'G' and decrease 'S'
Increase 'S' and decrease 'G'

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