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Mass Transfer

Mass Transfer
Rate of leaching increases with increasing

Pressure
Size of the solid
Viscosity of solvent
Temperature

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

Increases
Remains same
Decreases linearly
Decreases

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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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Mass Transfer
If a₁ and a₂ are the relative volatilities when the pressure in the distillation column is 1 and 2 atm respectively. Pick out the correct statement.

a₁ = a₂
None of these
a₁ = 2a₂
a₁ = 0.5 a₂

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Mass Transfer
Only small amount of evaporation of water produces large cooling effects because of its

Small latent heat
None of these
Low viscosity
Large latent heat

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Mass Transfer
In distillation where q is defined as the moles of liquid flow in the stripping section per mole of feed introduced, for saturated liquid feed

q > 1
q = 1
q < 1
q = 0

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