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)

(G.a)/FG

F/(FG.a)

FG/(G.a)

L/(FG.G)

(G.a)/FG

F/(FG.a)

FG/(G.a)

L/(FG.G)

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Mass Transfer
McCabe-Thiele method

Can use any type of units

Uses weight fractions to express liquid and vapour composition

Is more accurate than Ponchan-Savarit method

Uses molal units for material and energy balance

Can use any type of units

Uses weight fractions to express liquid and vapour composition

Is more accurate than Ponchan-Savarit method

Uses molal units for material and energy balance

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Mass Transfer
The dew point of a saturated gas phase equals the __________ temperature.

Gas

None of these

Wet bulb

Room

Gas

None of these

Wet bulb

Room

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Mass Transfer
Stage efficiency in a leaching process depends on the

Rate of diffusion of the solute through the solid and into the liquid

Time of contact between the solid and the solution

Vapour pressure of the solution

Both A & B

Rate of diffusion of the solute through the solid and into the liquid

Time of contact between the solid and the solution

Vapour pressure of the solution

Both A & B

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Mass Transfer
Pick out the wrong statement pertaining to leaching.

Fine solids can not be leached in a Pachuka tank

Door classifier can be used for leaching of coarse solids

Vegetable seeds can be leached in either of Bollman extractor, Rotocel or Kennedy extractor

Very high temperature is not needed for the leaching of sugar beet

Fine solids can not be leached in a Pachuka tank

Door classifier can be used for leaching of coarse solids

Vegetable seeds can be leached in either of Bollman extractor, Rotocel or Kennedy extractor

Very high temperature is not needed for the leaching of sugar beet

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Mass Transfer
Molecular diffusion is caused by the

Activation energy of the molecules

Potential energy of the molecules

Transfer of molecules from low concentration to high concentration region

Thermal energy of the molecules

Activation energy of the molecules

Potential energy of the molecules

Transfer of molecules from low concentration to high concentration region

Thermal energy of the molecules

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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 McCabe-Thiele method

Mass Transfer The dew point of a saturated gas phase equals the __________ temperature.

Mass Transfer Stage efficiency in a leaching process depends on the

Mass Transfer Pick out the wrong statement pertaining to leaching.

Mass Transfer Molecular diffusion is caused by the

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
McCabe-Thiele method

Mass Transfer
The dew point of a saturated gas phase equals the __________ temperature.

Mass Transfer
Stage efficiency in a leaching process depends on the

Mass Transfer
Pick out the wrong statement pertaining to leaching.

Mass Transfer
Molecular diffusion is caused by the