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Mass Transfer

Mass Transfer
In a binary distillation column, if the feed contains 40 mole % vapour, the q line will have a slope of

-0.6
-1.5
0.6
1.5

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Mass Transfer
During the constant rate period of drying of a solid,

Increasing the air temperature decreases the drying rate
Surface evaporation of unbound moisture occurs
Increased air humidity decreases the rate of drying
None of these

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Mass Transfer
The adiabatic saturation curve for a vapour-gas mixture is

Straight line
Slightly concave downward
None of these
Slightly concave upward

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

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

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Mass Transfer
Free flowing granular materials can be best dried in a __________ drier.

Cylinder
Freeze
Drun
Rotary

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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.

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

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