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Mass Transfer

Mass Transfer
At what percentage (by volume) of alcohol composition, it forms an azeotrope with water?

99
95
91.5
90

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Mass Transfer
With increase in temperature, the leaching rate increases because of the

Increased diffusivity
Decreased viscosity of liquid
None of the listed here
Both Decreased viscosity of liquid & Increased diffusivity

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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
Large scale drying of wheat is done in a __________ dryer.

Fluidised bed
Tray
Vacuum rotary
Spouted bed

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Mass Transfer
Corresponding to Nusselt number in heat transfer, the dimensionless group in mass transfer is the __________ number.

Stanton
Peclet
Sherwood
Schmidt

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Mass Transfer
Inside the distillation columns, the

Highest temperatures is near the feed plate
All of these
Driving force for the liquid flow is its weight
Vapors are not always at their dew points

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