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Mass Transfer

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

Truck
Tray
Spouted bed
Rotary

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Mass Transfer
For a binary mixture with low relative volatility,

Use steam distillation
An azeotrope may be formed during distillation
Use molecular distillation
Use high pressure distillation

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Mass Transfer
Which of the following provides maximum contact surface for a liquid-vapour system?

Packed tower
Bubble-cap plate column
Seive-plate column
Wetted wall column

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Mass Transfer
Free flowing granular materials can be best dried in a __________ drier.

Drun
Cylinder
Rotary
Freeze

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Mass Transfer
For a fixed number of ideal stages in a distillation column, as the reflux ratio is increased, the difference in composition between the top and bottom product streams

Decreases
Remains unaffected
Passes through a maximum
Increases

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Mass Transfer
Mass transfer co-efficient 'K' according to penetration theory varies with mass dif-fusivity as

1/D
D
D0.5
D1.5

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