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Mass Transfer

Mass Transfer
Leaching of coarse solid lumps is also termed as

Percolation
Dissolution
Decoction
Agitation and settling

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Mass Transfer
Mass transfer co-efficient is defined as

None of the listed here
Flux=concentration difference/co-effi-cient
Flux = Co-efficient/concentration difference
Co-efficient = Flux/concentration difference

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Mass Transfer
Large scale usage of flash distillation is practised in

Soap manufacturing
Petroleum refinning
Polymerisation industry
Ammonia synthesis plant

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Mass Transfer
For which of the following unit operations, Lewis number is of significance?

Humidification
Gas absorption
Binary distillation
Adsorption

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Mass Transfer
In the layout plan for a vacuum distillation unit, operating at 60 mm Hg, supported by a barometric condenser, the appropriate place for the location of vacuum drum for collecting the distillate will be

10 metres above ground
5 metres above ground
At ground level
2 metres above the ground

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Mass Transfer
Lewis number, which is important in problems involving simultaneous heat and mass transfer, is the ratio of

Momentum diffusivity to thermal diffusivity
None of these
Mass diffusivity to momentum diffusivity
Thermal diffusivity to mass diffusivity

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