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Mass Transfer

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

100
78
None of these
50

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Mass Transfer
The diffusivity (D) in a binary gas mixture is related to the pressure (P) as

D ∝ 1/P0.5
D ∝ P0.5
D ∝ 1/P
D ∝ 1/P1.5

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Mass Transfer
Steady state equimolal counter diffusion occurs in case of

Liquid-liquid extraction
Binary phase distillation
Leaching
Absorption

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Mass Transfer
(NSh/NRe.NSc) is termed in mass transfer operation as the

Momentum diffusivity
Peclet number
Stanton number
Thermal diffusivity

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Mass Transfer
Flooding in a column results due to

High temperature
Low velocity of the liquid
Low pressure drop
High pressure drop

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Mass Transfer
During sensible cooling process

Relative humidity decreases
Relative humidity increases
Wet bulb temperature decreases
Both B and C

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