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Mass Transfer

Mass Transfer
__________ diffusion is used for separating the isotopes of methane.

Force
Pressure
Thermal
Concentration

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Mass Transfer
Positive deviation from Raoult's law means a mixture whose total pressure is

None of these
Greater than that computed for ideality
Less than that computed for ideality
Less than the sum of the vapour pressure of the components

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

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

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Mass Transfer
Operating velocity in a packed tower is usually __________ the flooding velocity.

Half
Equal to
More than
Twice

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Mass Transfer
At 750°K and 1 atm, the approximate value of Schmidt number for air is

0.01
0.1
10
1

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

m³
Gm
Kg
Litre

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