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Mass Transfer

Mass Transfer
Wet bulb and dry bulb temperatures becomes identical at __________ percent saturation curve.

100
50
78
None of these

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Mass Transfer
The humid volume may be increased by increasing the

Temperature at constant humidity
Humidity at constant temperature
Both A & B
Neither A nor B

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Mass Transfer
Heat sensitive materials with very high latent heat of vaporisation may be economically separated using

Distillation
Liquid extraction
Absorption
Evaporation

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

K ∝ D1.5
K ∝ √D
K ∝ D2
K ∝ D

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Mass Transfer
In case of gases, the binary diffusivity is proportional to (where, P = pressure)

√P
1/√P
1/P
P

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Mass Transfer
__________ temperature is the steady state temperature attained by a small amount of liquid evaporating into a large quantity of unsaturated gas-vapor mixture.

Dry bulb
Dew point
Wet bulb
None of these

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