Acetone is to be removed from air in an isothermal dilute absorber using pure water as solvent. The incoming air contains 5 mole% of acetone (yin = 0.05). The design equation to be used for obtaining the number of trays (N) of the absorber is, N+2 = 6 log (yin/yout).For 98% recovery of acetone, the number of trays required is/are

Mass Transfer
Acetone is to be removed from air in an isothermal dilute absorber using pure water as solvent. The incoming air contains 5 mole% of acetone (yin = 0.05). The design equation to be used for obtaining the number of trays (N) of the absorber is, N+2 = 6 log (yin/yout).For 98% recovery of acetone, the number of trays required is/are

10

1

8

9

10

1

8

9

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Mass Transfer
In case of physical adsorption, the difference between heat of adsorption and heat of normal condensation is

Called integral heat of adsorption

Equal to the heat of formation of surface compound

Zero

Equal to the heat of wetting

Called integral heat of adsorption

Equal to the heat of formation of surface compound

Zero

Equal to the heat of wetting

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Mass Transfer
In case of liquid-liquid binary diffusion, diffusivity of one constituent into another is not dependent on the

Temperature and pressure

Nature of the constituents

Concentration

None of these

Temperature and pressure

Nature of the constituents

Concentration

None of these

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Mass Transfer
Molecular distillation is

Very low pressure distillation

For heat-sensitive materials

High temperature distillation

Both B and C

Very low pressure distillation

For heat-sensitive materials

High temperature distillation

Both B and C

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Mass Transfer
Free flowing granular materials can be best dried in a __________ drier.

Freeze

Drun

Rotary

Cylinder

Freeze

Drun

Rotary

Cylinder

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Mass Transfer
In a packed tower, the value of HETP equals HTUOG, when the equilibrium and the operating lines are (where, HETP = height equivalant to a theoretical plate HTUOG = overall gas phase height of a transfer unit)

Parallel

Straight

Neither A nor B

Both A & B

Parallel

Straight

Neither A nor B

Both A & B

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Mass Transfer

Mass Transfer In case of physical adsorption, the difference between heat of adsorption and heat of normal condensation is

Mass Transfer In case of liquid-liquid binary diffusion, diffusivity of one constituent into another is not dependent on the

Mass Transfer Molecular distillation is

Mass Transfer Free flowing granular materials can be best dried in a __________ drier.

Mass Transfer In a packed tower, the value of HETP equals HTUOG, when the equilibrium and the operating lines are (where, HETP = height equivalant to a theoretical plate HTUOG = overall gas phase height of a transfer unit)

Mass Transfer
In case of physical adsorption, the difference between heat of adsorption and heat of normal condensation is

Mass Transfer
In case of liquid-liquid binary diffusion, diffusivity of one constituent into another is not dependent on the

Mass Transfer
Molecular distillation is

Mass Transfer
Free flowing granular materials can be best dried in a __________ drier.

Mass Transfer
In a packed tower, the value of HETP equals HTUOG, when the equilibrium and the operating lines are (where, HETP = height equivalant to a theoretical plate HTUOG = overall gas phase height of a transfer unit)