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Mass Transfer

Mass Transfer
Stefan's law describes the mass transfer by

Diffusion
Both A & B
Bulk flow
Neither A nor B

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Mass Transfer
Cox chart, which is useful in the design of distillation column particularly for petroleum hydrocarbons, is a plot of (where, P = vapor pressure, T = temperature)

Log P vs . T
Log P vs. log T
T vs . P
P vs . log T

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Mass Transfer
In McCabe-Thiele method of theoretical plate calculation for a distillation column, the operating lines of stripping and rectifying sections coincide with the diagonal at __________ reflux.

Total
Operating
Maximum permissible
Minimum

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

Remains unchanged
Increases
Increases exponentially
Decreases

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

Thermal diffusivity
Stanton number
Momentum diffusivity
Peclet number

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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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