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Mass Transfer

Mass Transfer
When the feed to a distillation column is a saturated liquid, slope of the feed line is

Zero
Infinity
Unity
None of these

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Mass Transfer
In a counter-current extractor, as the axial mixing increases, the extraction efficiency

Depends on the pressure of the system
Increases
Remains unchanged
Decreases

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Mass Transfer
Mass transfer co-efficient varies as DAB0.5, according to the __________ theory.

Surface renewal
None of these
Penetration
Film

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Mass Transfer
Mass transfer co-efficient of liquid is

Affected more by temperature than that for gases
Not affected by the temperature
Affected much less by temperature than that for gases
None of these

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Mass Transfer
The vapour pressure exerted by the moisture contained in a wet solid depends upon the

All of these
Nature of the solid
Nature of the moisture
Temperature

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Mass Transfer
In physical terms, Schmidt number means

Thermal diffusivity/momentum diffusivity
Momentum diffusivity/mass diffusivity
Thermal diffusivity/mass diffusivity
Mass diffusivity/thermal diffusivity

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