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Mass Transfer

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

Gm
Kg
Litre
m³

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Mass Transfer
Which of the following is used for the concentration of rubber latex?

Agitated film evaporator
Short tube evaporator
Long tube vertical evaporator
Calendria

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

Peclet
Stanton
Schmidt
Sherwood

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Mass Transfer
In extractive distillation, solvent is

Added to alter the relative volatility of the mixture
Present in overhead stream
Of high volatility
Of high viscosity to give high tray efficiency

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Mass Transfer
Which of the following provides maximum contact surface for a liquid-vapour system?

Packed tower
Seive-plate column
Bubble-cap plate column
Wetted wall column

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Mass Transfer
Sand is dried in foundaries in a___drier.

Rotary
Spray
Vacuum
Fluidisedbed

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