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Mass Transfer

Mass Transfer
Rate of leaching increases with increasing

Viscosity of solvent
Temperature
Size of the solid
Pressure

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Mass Transfer
__________ column is preferred to be used, when a high liquid hold up is required in a reactor for gas-liquid reaction.

Bubble
Tray
Packed
Spray

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Mass Transfer
Desulphurisation of petrol is done in a

Rotating disc extractor
Packed extraction column
Bollman extractor
Plate type extraction column

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

Drun
Rotary
Cylinder
Freeze

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Mass Transfer
During sensible cooling process

Both B and C
Wet bulb temperature decreases
Relative humidity increases
Relative humidity decreases

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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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