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

2

1.56

1

0.56

2

1.56

1

0.56

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Mass Transfer
In distillation where q is defined as the moles of liquid flow in the stripping section per mole of feed introduced, for saturated liquid feed

q = 1

q = 0

q < 1

q > 1

q = 1

q = 0

q < 1

q > 1

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Mass Transfer
When an unsaturated air-water mixture is heated at constant pressure, then

The specific humidity decreases

The relative humidity increases

The relative humidity decreases

The partial pressure of water vapour increases

The specific humidity decreases

The relative humidity increases

The relative humidity decreases

The partial pressure of water vapour increases

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Mass Transfer
Use of raschig rings in place of crushed stones as packing in packed beds (other things being same)

Decreases pressure drop, increases surface area

Increases pressure drop, decreases surface area

Decreases pressure drop, decreases surface area

Increases pressure drop, increases surface area

Decreases pressure drop, increases surface area

Increases pressure drop, decreases surface area

Decreases pressure drop, decreases surface area

Increases pressure drop, increases surface area

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Mass Transfer
The temperature of water cooled in cooling tower is always __________ temperature of entering air.

Equal to the dry bulb

More than the wet bulb

Less than the wet bulb

Equal to the wet bulb

Equal to the dry bulb

More than the wet bulb

Less than the wet bulb

Equal to the wet bulb

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Mass Transfer
Surface renewal model of mass transfer was enunciated by

Fick

Danckwerts

Stefan

Toor and Marchello

Fick

Danckwerts

Stefan

Toor and Marchello

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Mass Transfer

Mass Transfer In distillation where q is defined as the moles of liquid flow in the stripping section per mole of feed introduced, for saturated liquid feed

Mass Transfer When an unsaturated air-water mixture is heated at constant pressure, then

Mass Transfer Use of raschig rings in place of crushed stones as packing in packed beds (other things being same)

Mass Transfer The temperature of water cooled in cooling tower is always __________ temperature of entering air.

Mass Transfer Surface renewal model of mass transfer was enunciated by

Mass Transfer
In distillation where q is defined as the moles of liquid flow in the stripping section per mole of feed introduced, for saturated liquid feed

Mass Transfer
When an unsaturated air-water mixture is heated at constant pressure, then

Mass Transfer
Use of raschig rings in place of crushed stones as packing in packed beds (other things being same)

Mass Transfer
The temperature of water cooled in cooling tower is always __________ temperature of entering air.

Mass Transfer
Surface renewal model of mass transfer was enunciated by