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Mass Transfer

Mass Transfer
Molarity is defined as the number of gm moles of solute per __________ of solvent.

c
Gm
Litre
Kg

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

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

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Mass Transfer
The cooling effect in a cooling tower can not be increased by

Reducing the humidity of entering air
Increasing the air velocity over the wet surfaces
Lowering the barometric pressure
None of these

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

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Mass Transfer
At a fixed total pressure, humidity depends only on the

Density of the vapour
Heat capacity of the vapour
Partial pressure of vapour in the mixture
None of these

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Mass Transfer
In case of an ideal solution, the total vapor pressure varies __________ with the composition expressed as mole fraction,

Inversely
Linearly
None of these
Exponentially

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