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Mass Transfer

Mass Transfer
Sand is dried in foundaries in a___drier.

Fluidisedbed
Rotary
Spray
Vacuum

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Mass Transfer
If mass diffusivity in a mixture is equal to the thermal diffusivity, then the Lewis number is

< 1
> 1
1

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Mass Transfer
A slurry is to be dried to produce flaky solid. Which dryer would you recommend?

Drum dryer
Rotary dryer
Dielectric dryer
Spray dryer

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Mass Transfer
In stripping section of continuous distillation column, the

Vapour is stripped of low boiler
Liquid is enriched with high boiler
Liquid is stripped of high boiler
None of these

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Mass Transfer
For turbulent mass transfer in pipes, the Sherwood number depends on the Reynolds number as

Re
Re0.33
Re0.83
Re0.53

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Mass Transfer
The relative volatility of a binary mixture at constant temperature __________ the total pressure.

Increases with increase in
Decreases with increase in
None of these
Is independent of

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