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Mass Transfer

Mass Transfer
Leaching rate is independent of the

None of the listed here
Particle size
Temperature
Agitation

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Mass Transfer
Molecular diffusivity of a liquid

May increase or decrease with temperature
Increases with temperature
Decreases with temperature
Is independent of temperature

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Mass Transfer
Agitator is provided in a crystalliser for

Crystal growth
All of these
Formation of nuclei
Avoiding deposition on cooler surfaces

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Mass Transfer
Equilibrium-moisture curves of different solids

Depend on the humidity of the gas
None of these
Are different
Are same

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Mass Transfer
At a given equilibrium pressure, with increase in temperature, the concentration of adsorbed gas on solid adsorbant

Increases exponentially
Decreases
Remains unchanged
Increases

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Mass Transfer
In continuous distillation, the internal reflux ratio (Ri) and the external reflux ratio (Re) are related as

Ri = Re/(1 - Re)
Ri = Re
Ri = Re/(1 + Re)
Ri = (1 - Re)/Re

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