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MASS TRANSFER

Mass Transfer
Radioactive nuclear waste is treated in

Pulsed column extractor
Rotating-disc contactor
Mixer-settler extractor
Bollman extractor

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Mass Transfer
Unit operation involved in the prilling of urea is

Both B and C
Evaporation
Crystallisation
Drying

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Mass Transfer
Danckwerts developed the __________ theory.

Penetration
Surface renewal
Film
None of these

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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
With increase in pressure, the relative volatility for a binary system

Increases
Decreases
Either A or B, depends on the system
Remains same

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