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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

Unpredictable
More
Same
Less

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Mass Transfer
The Reynolds number of the liquid was increased 100 fold for a laminar falling film used for gas-liquid contacting. Assuming penetrating theory is applicable, the fold increase in the mass transfer co-efficient (Kc) for the same sytem is

5
100
1
10

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Mass Transfer
Physical absorption is

A reversible phenomenon
An irreversible phenomenon
Accompanied by evolution of heat
Both B & C

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Mass Transfer
High pressure at the bottom of a distillation tower handling heat sensitive materials results in

Increased relative volatility
Erosion of the tower
Thermal decomposition of bottoms
Very efficient operation

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Mass Transfer
Mass transfer co-efficient of liquid is

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

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Mass Transfer
When the temperature and humidity of air is low, we usually use __________ draft cooling tower.

Forced
Induced
Natural
None of these

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