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Mass Transfer

Mass Transfer
Absorption factor, for a fixed degree of absorption from a fixed amount of gas should be

< 1
1
≤ 1
> 1

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Mass Transfer
Which of the following parameters remains almost constant during adiabatic saturation of unsaturated air?

Dew point
Dry bulb temperature
Wet bulb temperature
None of these

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

None of these
Decreases
Remains unchanged
Increases

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Mass Transfer
The wet and 'dry bulb temperature for a vapour-gas mixture are 25°C and 30°C respectively. If the mixture is heated to 45°C at constant pressure, the wet bulb temperature will be __________ °C.

> 25
< 25
25
-25

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Mass Transfer
The drying time between fixed moisture contents within the 'constant rate period' is proportional to (assuming that drying occurs from all surfaces of the solid) (where, T = thickness of the solid )

T
T1.5
T3
√T

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Mass Transfer
The unit of volumetric diffusivity is

Cm³/sec
Cm²/sec
Cm/sec
Cm²/seC₂

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