H₂S is being absorbed in a gas absorber unit. The height of the transfer unit based on the overall mass transfer coefficient on the gas side is 0.4 m. The equilibrium data is given by, y = 1.5 x. The bulk concentration of H₂S has to be reduced from 0.05 to 0.001 mole fraction in the gas side. The height of the tower (in metres) corresponding to an operating line given by, y = 5x + 0.001 is

Mass Transfer
H₂S is being absorbed in a gas absorber unit. The height of the transfer unit based on the overall mass transfer coefficient on the gas side is 0.4 m. The equilibrium data is given by, y = 1.5 x. The bulk concentration of H₂S has to be reduced from 0.05 to 0.001 mole fraction in the gas side. The height of the tower (in metres) corresponding to an operating line given by, y = 5x + 0.001 is

0.56

1.56

1

2

0.56

1.56

1

2

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Mass Transfer
Leaching of coffee from coffee beans is done by

Hexane

Dilute H₂SO₄ (hot)

Hot water

Lime water

Hexane

Dilute H₂SO₄ (hot)

Hot water

Lime water

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Mass Transfer
If Rm is the minimum reflux ratio, the optimum reflux ratio may be around __________ Rm.

3 to 4

2.5 to 3

1.2 to 1.5

5

3 to 4

2.5 to 3

1.2 to 1.5

5

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Mass Transfer
On addition of solute in the solvent, the __________ of the solution decreases.

Vapour pressure

Boiling point

Both B and C

Freezing point

Vapour pressure

Boiling point

Both B and C

Freezing point

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Mass Transfer
In an absorption coloumn, the flooding velocity for random packing is __________ that for stacked/regular packing.

Greater than

Equal to

Either A, or B ; depends on the type of packing

Smaller than

Greater than

Equal to

Either A, or B ; depends on the type of packing

Smaller than

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Mass Transfer
According to Poiseuille's law, the permeability for gas flow through a capillary is proportional to (where, μ = gas viscosity)

1/μ

μ

μ²

√μ

1/μ

μ

μ²

√μ

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Mass Transfer

Mass Transfer Leaching of coffee from coffee beans is done by

Mass Transfer If Rm is the minimum reflux ratio, the optimum reflux ratio may be around __________ Rm.

Mass Transfer On addition of solute in the solvent, the __________ of the solution decreases.

Mass Transfer In an absorption coloumn, the flooding velocity for random packing is __________ that for stacked/regular packing.

Mass Transfer According to Poiseuille's law, the permeability for gas flow through a capillary is proportional to (where, μ = gas viscosity)

Mass Transfer
Leaching of coffee from coffee beans is done by

Mass Transfer
If Rm is the minimum reflux ratio, the optimum reflux ratio may be around __________ Rm.

Mass Transfer
On addition of solute in the solvent, the __________ of the solution decreases.

Mass Transfer
In an absorption coloumn, the flooding velocity for random packing is __________ that for stacked/regular packing.

Mass Transfer
According to Poiseuille's law, the permeability for gas flow through a capillary is proportional to (where, μ = gas viscosity)