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Mass Transfer

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

Litre
Gm
c
Kg

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Mass Transfer
In liquid extraction, if the selectivity is unity, then

Separation of the constituents is the most effective
Amount of solvent required will be minimum
No separation will occur
Solvent flow rate should be very low

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Mass Transfer
Corresponding to Nusselt number in heat transfer, the dimensionless group in mass transfer is the __________ number.

Stanton
Peclet
Sherwood
Schmidt

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

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Mass Transfer
Large scale drying of sugar is done in a __________ dryer.

Rotary
Tray
Truck
Spouted bed

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Mass Transfer
The fixed cost of a distillation column at minimum reflux ratio is

Minimum
Optimum
None of these
Infinite

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