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Mass Transfer

Mass Transfer
Weight of 1 m³ of humid air as compared to 1 m³ of dry air, under the same conditions, is

Less
Same
More
Unpredictable

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Mass Transfer
If f is defined as above, then which of the following applies to a feed at dew point?

F = 1
F > 1
F < 1
0 < f < 1

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Mass Transfer
To increase the absorption factor, (where, G = gas flow rate, S = solvent flow rate)

Decrease both 'G' and 'S'
Increase both 'G' and 'S'
Increase 'S' and decrease 'G'
Increase 'G' and decrease 'S'

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Mass Transfer
__________ columns are used for liquid dispersion in a continuous gas phase.

Pulse
Sieve plate
Packed
Bubble cap

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Mass Transfer
Mass transfer co-efficient of liquid is

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

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Mass Transfer
Unit operation involved in the prilling of urea is

Drying
Both B and C
Evaporation
Crystallisation

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