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

1

2

0.56

1.56

1

2

0.56

1.56

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Mass Transfer
Flights in a rotary dryer are provided to

Lift and shower the solids thus exposing it thoroughly to the drying action of the gas

Reduce the residence time of solid

None of these

Increase the residence time of the solid

Lift and shower the solids thus exposing it thoroughly to the drying action of the gas

Reduce the residence time of solid

None of these

Increase the residence time of the solid

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Mass Transfer
Which of the following binary systems is an example of a maximum boiling azeotrope?

None of the listed here

Water-ethyl alcohol

Acetone-carbon disulphide

Water-hydrochloric acid

None of the listed here

Water-ethyl alcohol

Acetone-carbon disulphide

Water-hydrochloric acid

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Mass Transfer
For ethanol-water system, the lowering of distillate quality from 95% to 92% will cause __________ plate requirement.

Marginal decrease in the number of

None of the listed here

No change in theoretical

Major decrease in the number of

Marginal decrease in the number of

None of the listed here

No change in theoretical

Major decrease in the number of

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Mass Transfer
In most of the vacuum crystalliser, vacuum is generally produced by means of a

Suction pump

Compressed air jet

None of these

Steam jet ejector with a barometric condenser

Suction pump

Compressed air jet

None of these

Steam jet ejector with a barometric condenser

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Mass Transfer
During bottling of cold drinks (e.g. Pepsi), the main resistance to mass transfer for the absorption of carbon dioxide in water lies in the

Liquid film

None of these

Gas film

Liquid-gas interface

Liquid film

None of these

Gas film

Liquid-gas interface

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Mass Transfer

Mass Transfer Flights in a rotary dryer are provided to

Mass Transfer Which of the following binary systems is an example of a maximum boiling azeotrope?

Mass Transfer For ethanol-water system, the lowering of distillate quality from 95% to 92% will cause __________ plate requirement.

Mass Transfer In most of the vacuum crystalliser, vacuum is generally produced by means of a

Mass Transfer During bottling of cold drinks (e.g. Pepsi), the main resistance to mass transfer for the absorption of carbon dioxide in water lies in the

Mass Transfer
Flights in a rotary dryer are provided to

Mass Transfer
Which of the following binary systems is an example of a maximum boiling azeotrope?

Mass Transfer
For ethanol-water system, the lowering of distillate quality from 95% to 92% will cause __________ plate requirement.

Mass Transfer
In most of the vacuum crystalliser, vacuum is generally produced by means of a

Mass Transfer
During bottling of cold drinks (e.g. Pepsi), the main resistance to mass transfer for the absorption of carbon dioxide in water lies in the