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Mass Transfer

Mass Transfer
The-relative volatility for separation of a non-ideal binary mixture by distillation should be

1
< 1
> 1

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Mass Transfer
Calculation of mass transfer co-efficient is mostly/normally done using __________ theory.

None of the listed here
Penetration
Surface renewal
Film

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Mass Transfer
Sticky material can be dried in a __________ dryer.

None of these
Rotary
Fluidised bed
Tray

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Mass Transfer
Tower diameter may be decreased by

Increasing the liquid flow rate
Use of increased tray spacing
Using higher reflux ratio
Increasing the vapour flow rate

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Mass Transfer
Mass transfer co-efficient is directly proportional to DAB0.5, according to __________ theory.

None of these
Penetration
Surface renewal
Film

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Mass Transfer
The main reason for dividing a tall packed tower into series of small towers is to

Reduce liquid hold up
Avoid flooding
Avoid channeling
Minimise the overall pressure drop

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