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Mass Transfer

Mass Transfer
Rate of leaching increases with increasing

Size of the solid
Temperature
Viscosity of solvent
Pressure

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Mass Transfer
If moisture content of solid on dry basis is X, then the same on wet basis is

X/(X + 1)
(X - 1)/X
X/(X - 1)
(X + 1)/X

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Mass Transfer
The efficiency of a plate column will be maximum, when the flow is ideal __________ the plate.

Above
Across
Neither A nor B
Both A & B

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Mass Transfer
With increase in pressure, the relative volatility for a binary system

Remains same
Either A or B, depends on the system
Increases
Decreases

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Mass Transfer
Which of the following quantities need not be fixed before starting the design of a co-current absorber?

Heat gain or loss
Flow rate of gas
Flow rate of entering liquid
None of the listed here

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Mass Transfer
With increase in gas rate, the number of transfer units, NtoG, for a fixed degree of absorption by a fixed amount of solvent

Decreases
Decreases linearly
Remains unaffected
Increases

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