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Mass Transfer

Mass Transfer
Leaching rate is independent of the

Particle size
Temperature
None of the listed here
Agitation

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Mass Transfer
Weight of 1 m³ of humid air as compared to 1 m³ of dry air, under the same conditions, is

Less
Same
Unpredictable
More

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Mass Transfer
Penetration theory relates the average mass transfer co-efficient (K) with diffusivity (D) as

K ∝ D2
K ∝ D1.5
K ∝ √D
K ∝ D

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Mass Transfer
In extraction, as the temperature increases, the area of hetrogeneity (area covered by binodal curve)

Decreases
None of these
Remains unchanged
Increases

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Mass Transfer
Which of these columns incurs the lowest pressure drop?

Packed column (with stacked packing)
Packed column (with dumped packing)
Pulse column
Bubble plate column

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Mass Transfer
Moisture in a substance exerting an equilibrium vapour pressure less than that of pure liquid at the same temperature is called the __________ moisture.

Unbound
Critical
Bound
None of these

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