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Mass Transfer

Mass Transfer
Leaching of coarse solid lumps is also termed as

Agitation and settling
Percolation
Dissolution
Decoction

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Mass Transfer
Which of the following parameters remains constant during chemical dehumidifica-tion?

Partial pressure of vapour
Dry bulb temperature
Wet bulb temperature
None of these

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Mass Transfer
The binary diffusivity in gases does not depend upon the

None of the listed here
Temperature
Nature of the components
Pressure

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Mass Transfer
Capacity of a rotary dryer depends on its

Inclination with ground surface
R.p.m
None of the listed here
Both Inclination with ground surface & R.p.m

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

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

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Mass Transfer
Can the efficiency of a plate in the distillation tower be greater than 100%?

Yes
Yes ; if the reflux ratio is maximum
Never
Normally not; but is possible if infinite number of plates are put

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