For the gas absorption, the height of a transfer unit, based on the gas phase is given by (G: superficial molar gas velocity, L: superficial molar liquid velocity, FG:mass transfer co-efficient, mols/m² , a: in-terfacial area per unit volume of tower)

Mass Transfer
For the gas absorption, the height of a transfer unit, based on the gas phase is given by (G: superficial molar gas velocity, L: superficial molar liquid velocity, FG:mass transfer co-efficient, mols/m² , a: in-terfacial area per unit volume of tower)

FG/(G.a)

(G.a)/FG

F/(FG.a)

L/(FG.G)

FG/(G.a)

(G.a)/FG

F/(FG.a)

L/(FG.G)

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Mass Transfer
Which of the following is not a continuous drier?

Spray drier

Drum drier

Tray drier

Tunnel drier

Spray drier

Drum drier

Tray drier

Tunnel drier

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Mass Transfer
When the solvent dissolves very little of solute, then

Solvent of low freezing point should be used

Solvent of low latent heat of vaporisation should be used

Large quantity of solvent is required to extract the solute

Very small quantity of solvent is required

Solvent of low freezing point should be used

Solvent of low latent heat of vaporisation should be used

Large quantity of solvent is required to extract the solute

Very small quantity of solvent is required

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Mass Transfer
Which of the following plays an important role in problems of simultaneous heat and mass transfer?

Prandtl number

Lewis number

Sherwood number

Schmidt number

Prandtl number

Lewis number

Sherwood number

Schmidt number

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Mass Transfer
When the psychometric ratio is __________ then the adiabatic saturation temperature and wet bulb temperature becomes equal.

?

> 1

1

< 1

?

> 1

1

< 1

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Mass Transfer
Schmidt number is given by

Re/Pe

Re.Pe

Μ/ρDAB

Sh x Pe

Re/Pe

Re.Pe

Μ/ρDAB

Sh x Pe

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Mass Transfer

Mass Transfer For the gas absorption, the height of a transfer unit, based on the gas phase is given by (G: superficial molar gas velocity, L: superficial molar liquid velocity, FG:mass transfer co-efficient, mols/m² , a: in-terfacial area per unit volume of tower)

Mass Transfer Which of the following is not a continuous drier?

Mass Transfer When the solvent dissolves very little of solute, then

Mass Transfer Which of the following plays an important role in problems of simultaneous heat and mass transfer?

Mass Transfer When the psychometric ratio is __________ then the adiabatic saturation temperature and wet bulb temperature becomes equal.

Mass Transfer Schmidt number is given by

Mass Transfer
For the gas absorption, the height of a transfer unit, based on the gas phase is given by (G: superficial molar gas velocity, L: superficial molar liquid velocity, FG:mass transfer co-efficient, mols/m² , a: in-terfacial area per unit volume of tower)

Mass Transfer
Which of the following is not a continuous drier?

Mass Transfer
When the solvent dissolves very little of solute, then

Mass Transfer
Which of the following plays an important role in problems of simultaneous heat and mass transfer?

Mass Transfer
When the psychometric ratio is __________ then the adiabatic saturation temperature and wet bulb temperature becomes equal.

Mass Transfer
Schmidt number is given by