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

Liquid side

Interfacial

Both liquid and gas side

Gas side

Liquid side

Interfacial

Both liquid and gas side

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Mass Transfer
The mass transfer co-efficient for a solid sphere of radius 'a' dissolving in a large volume of quiescent liquid, in which D is the diffusivity of solute, is

D/2a

Dependent on the Reynolds number

D/a

Proportional to √D

D/2a

Dependent on the Reynolds number

D/a

Proportional to √D

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Mass Transfer
The temperature to which a vapour gas mixture must be cooled (at varying humidity) to become saturated is called the __________ temperature.

None of these

Dry bulb

Wet bulb

Dew point

None of these

Dry bulb

Wet bulb

Dew point

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Mass Transfer
Unsaturated air (with dry bulb temperature and dew point being 35°C and 18°C respectively) is passed through a water spray chamber maintained at 15°C. The air will be cooled

And dehumidified with increase in wet bulb temperature

And dehumidified with decrease in wet bulb temperature

At the same relative humidity

And humidified

And dehumidified with increase in wet bulb temperature

And dehumidified with decrease in wet bulb temperature

At the same relative humidity

And humidified

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Mass Transfer
Prandtl number for water at 20°C is about

150

7

0.7

70

150

7

0.7

70

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Mass Transfer
Which is the controlling factor for a drum drier?

Heat transfer

Diffusion

Both A & B

Neither A nor B

Heat transfer

Diffusion

Both A & B

Neither A nor B

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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 mass transfer co-efficient for a solid sphere of radius 'a' dissolving in a large volume of quiescent liquid, in which D is the diffusivity of solute, is

Mass Transfer The temperature to which a vapour gas mixture must be cooled (at varying humidity) to become saturated is called the __________ temperature.

Mass Transfer Unsaturated air (with dry bulb temperature and dew point being 35°C and 18°C respectively) is passed through a water spray chamber maintained at 15°C. The air will be cooled

Mass Transfer Prandtl number for water at 20°C is about

Mass Transfer Which is the controlling factor for a drum drier?

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 mass transfer co-efficient for a solid sphere of radius 'a' dissolving in a large volume of quiescent liquid, in which D is the diffusivity of solute, is

Mass Transfer
The temperature to which a vapour gas mixture must be cooled (at varying humidity) to become saturated is called the __________ temperature.

Mass Transfer
Unsaturated air (with dry bulb temperature and dew point being 35°C and 18°C respectively) is passed through a water spray chamber maintained at 15°C. The air will be cooled

Mass Transfer
Prandtl number for water at 20°C is about

Mass Transfer
Which is the controlling factor for a drum drier?