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Mass Transfer

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

Gm
Litre
m³
Kg

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Mass Transfer
Minimum reflux ratio in a distillation column results in

Minimum number of trays
Minimum reboiler size
Maximum condenser size
Optimum number of trays

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Mass Transfer
The Kundsen diffusivity is proportional to (where, T = absolute temperature)

T⁴
√T
T
T²

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Mass Transfer
Separation of __________ employs gaseous diffusion process.

N₂ and O₂ from air
Isotopes of helium
SO₂ and air
Isotopes of uranium

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Mass Transfer
With increase in temperature, the leaching rate increases due to

Neither A nor B
Increased diffusivity
Decreased liquid viscosity
Both A & B

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Mass Transfer
The wet and 'dry bulb temperature for a vapour-gas mixture are 25°C and 30°C respectively. If the mixture is heated to 45°C at constant pressure, the wet bulb temperature will be __________ °C.

-25
> 25
< 25
25

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