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Mass Transfer

Mass Transfer
The value of L/mG ratio for economical absorption operation ranges from

2.5 to 3.5
0.8 to 1.2
0.5 to 0.8
1.25 to 2.0

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Mass Transfer
During sensible cooling process

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

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Mass Transfer
The fixed cost of a distillation column at minimum reflux ratio is

Infinite
None of these
Minimum
Optimum

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Mass Transfer
Condensation of a vapour-gas mixture just begins, when (where, p = partial pressure of the vapour P = vapour pressure of the liquid )

P < P
P >>P
P
P = P

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Mass Transfer
As the reflux ratio decreases, the

None of these
Column diameter increases
Number of plates increases
Separation becomes more efficient

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Mass Transfer
The temperature to which a vapour gas mixture must be cooled (at varying humidity) to become saturated is called the __________ temperature.

Dew point
Dry bulb
None of these
Wet bulb

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