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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
More
Unpredictable
Same

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Mass Transfer
Diameter to height ratio for a rashig ring is

5
2
1
0.5

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Mass Transfer
Critical humidity of a solid salt means the humidity

Above which it will always become damp
Below which it will always stay dry
Both A and B
Above Which it will always become dry and below which it will always stay damp

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Mass Transfer
In a packed absorption tower, if the equilibrium and operating lines are both straight lines, then the ratio, HETP/HTUOG __________ the absorption factor.

Increases with increase in
Is one at unity value of
Both A and B
Neither A nor B

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Mass Transfer
Absorption (liquid-gas system) with evolution of heat as compared to isothermal absorption results in

All of these
Large number of trays
Decreased solute solubility
Large minimum liquid to gas (L/G) ratio

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Mass Transfer
At the boiling point of the liquid at the prevailing pressure, the saturated absolute humidity becomes

None of these
?
1

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