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Mass Transfer

Mass Transfer
Rate of leaching increases with increasing

Viscosity of solvent
Size of the solid
Temperature
Pressure

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Mass Transfer
At the same gas flow rate, the pressure drop in a packed tower being irrigated with liquid __________ that in dry packed tower.

Cannot be predicted as data are insufficient
Is same as
Is lower than
Is greater than

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Mass Transfer
Dry bulb temperature of the gas is __________ the wet bulb temperature.

More than
None of these
Less than
Equal to

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Mass Transfer
When an unsaturated air-water mixture is heated at constant pressure, then

The partial pressure of water vapour increases
The relative humidity decreases
The relative humidity increases
The specific humidity decreases

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Mass Transfer
Minimum possible diameter of a packed coloumn is decided mainly by the

Liquid hold up
Flooding
Gas viscosity
Liquid density

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Mass Transfer
The individual mass transfer co-efficients (moles/m² . s) for absorption of a solute from a gas mixture into a liquid solvent are, KL = 4.5 and KG = 1.5. The slope of the equilibrium line is 3. Which of the following resistance (s) is (are) controlling ?

Both liquid and gas side
Liquid side
Gas side
Interfacial

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