The individual mass transfer co-efficients (moles/m² . s) for absorption of a solute from a gas mixture into a liquid solvent are, KL = 4.5 and KG = 1.5. The slope of the equilibrium line is 3. Which of the following resistance (s) is (are) controlling ?

Mass Transfer
The individual mass transfer co-efficients (moles/m² . s) for absorption of a solute from a gas mixture into a liquid solvent are, KL = 4.5 and KG = 1.5. The slope of the equilibrium line is 3. Which of the following resistance (s) is (are) controlling ?

Gas side

Both liquid and gas side

Interfacial

Liquid side

Gas side

Both liquid and gas side

Interfacial

Liquid side

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Mass Transfer
The amount of steam required per unit quantity of distillate in case of steam distillation will be reduced by

Raising the temperature

Both A & B

Lowering the total pressure

Neither A nor B

Raising the temperature

Both A & B

Lowering the total pressure

Neither A nor B

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Mass Transfer
At the same gas flow rate, the pressure drop in a packed tower being irrigated with liquid __________ that in dry packed tower.

Is same as

Cannot be predicted as data are insufficient

Is lower than

Is greater than

Is same as

Cannot be predicted as data are insufficient

Is lower than

Is greater than

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Mass Transfer
What is the reflux ratio at total reflux?

Data insufficient

Zero

Unity

Infinity

Data insufficient

Zero

Unity

Infinity

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Mass Transfer
Absorption factor method is used to calculate the number of ideal stages, when

Operating line lies below the equilibrium line

Operating line lies above the equilibrium line

Both operating and equilibrium lines are parallel

Pressure drop in the column is very high

Operating line lies below the equilibrium line

Operating line lies above the equilibrium line

Both operating and equilibrium lines are parallel

Pressure drop in the column is very high

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Mass Transfer
Entrainer used in azeotropic distillation should

Form a new azeotrope of low relative volatility with one of the constituents of the mixture

Form a low boiling azeotrope with one of the constituents of the mixture

Have high latent heat of vaporisation

Have high viscosity to provide high tray efficiency

Form a new azeotrope of low relative volatility with one of the constituents of the mixture

Form a low boiling azeotrope with one of the constituents of the mixture

Have high latent heat of vaporisation

Have high viscosity to provide high tray efficiency

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Mass Transfer

Mass Transfer The individual mass transfer co-efficients (moles/m² . s) for absorption of a solute from a gas mixture into a liquid solvent are, KL = 4.5 and KG = 1.5. The slope of the equilibrium line is 3. Which of the following resistance (s) is (are) controlling ?

Mass Transfer The amount of steam required per unit quantity of distillate in case of steam distillation will be reduced by

Mass Transfer At the same gas flow rate, the pressure drop in a packed tower being irrigated with liquid __________ that in dry packed tower.

Mass Transfer What is the reflux ratio at total reflux?

Mass Transfer Absorption factor method is used to calculate the number of ideal stages, when

Mass Transfer Entrainer used in azeotropic distillation should

Mass Transfer
The individual mass transfer co-efficients (moles/m² . s) for absorption of a solute from a gas mixture into a liquid solvent are, KL = 4.5 and KG = 1.5. The slope of the equilibrium line is 3. Which of the following resistance (s) is (are) controlling ?

Mass Transfer
The amount of steam required per unit quantity of distillate in case of steam distillation will be reduced by

Mass Transfer
At the same gas flow rate, the pressure drop in a packed tower being irrigated with liquid __________ that in dry packed tower.

Mass Transfer
What is the reflux ratio at total reflux?

Mass Transfer
Absorption factor method is used to calculate the number of ideal stages, when

Mass Transfer
Entrainer used in azeotropic distillation should