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Mass Transfer

Mass Transfer
When the feed to a distillation column is a saturated liquid, slope of the feed line is

Unity
Infinity
None of these
Zero

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Mass Transfer
______ extractor uses centrifugal force for separating the two phases.

Podbielniak
Schiebel
Treybal
None of the listed here

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Mass Transfer
Mass transfer co-efficient of liquid is

None of these
Not affected by the temperature
Affected much less by temperature than that for gases
Affected more by temperature than that for gases

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Mass Transfer
If the amount of the steam used in steam distillation is increased, the temperature of distillation

Increases
Decreases
Depends on relative volatility
Remains unchanged

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Mass Transfer
The rough value of diffusion co-efficient of water vapor into air at 25°C may be about __________ cm²/sec.

0.0025
1.25
2.5
0.25

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Mass Transfer
Corresponding to Nusselt number in heat transfer, the dimensionless group in mass transfer is the __________ number.

Stanton
Sherwood
Schmidt
Peclet

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