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Mass Transfer

Mass Transfer
For turbulent mass transfer in pipes, the Sherwood number depends on the Reynolds number as

Re0.83
Re0.33
Re0.53
Re

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Mass Transfer
Liquid diffusivity is of the order of __________ cm² /second.

> 1
10-5 to 10-6
0.1
0.01

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

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Mass Transfer
The temperature of water cooled in cooling tower is always __________ temperature of entering air.

Less than the wet bulb
Equal to the wet bulb
More than the wet bulb
Equal to the dry bulb

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Mass Transfer
With increase in temperature, the mutual solubility of two liquids

Decreases
Decreases exponentially
Remains unchanged
Increases

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Mass Transfer
Mass transfer co-efficient 'K' according to penetration theory varies with mass dif-fusivity as

1/D
D
D0.5
D1.5

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MORE MCQ ON Mass Transfer

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