Though, theoretically the adsorption & desorption isotherms is expected to coincide but sometimes at least a part of the isotherms does not coincide and this phenomenon is known as adsorption hysterisis. In such cases, the desorption equilibrium pressure is __________ that obtained for adsorption.

Mass Transfer
Though, theoretically the adsorption & desorption isotherms is expected to coincide but sometimes at least a part of the isotherms does not coincide and this phenomenon is known as adsorption hysterisis. In such cases, the desorption equilibrium pressure is __________ that obtained for adsorption.

Higher than

Lower than

Either same or higher than

Same as

Higher than

Lower than

Either same or higher than

Same as

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Mass Transfer
The rough value of diffusion co-efficient of water vapor into air at 25°C may be about __________ cm²/sec.

2.5

1.25

0.0025

0.25

2.5

1.25

0.0025

0.25

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Mass Transfer
The dew point of an unsaturated gas-vapor mixture does not depend upon the __________ of the mixture.

Composition

Temperature

All of these

Total pressure

Composition

Temperature

All of these

Total pressure

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

The relative humidity increases

The specific humidity decreases

The partial pressure of water vapour increases

The relative humidity decreases

The relative humidity increases

The specific humidity decreases

The partial pressure of water vapour increases

The relative humidity decreases

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Mass Transfer
Only small amount of evaporation of water produces large cooling effects because of its

Large latent heat

None of these

Low viscosity

Small latent heat

Large latent heat

None of these

Low viscosity

Small latent heat

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Mass Transfer
Which of the following is considered equivalent to one theoretical stage in Mc-Cabe Thiele's method?

Total condenser

Both B and C

Reboiler

Partial condenser

Total condenser

Both B and C

Reboiler

Partial condenser

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Mass Transfer

Mass Transfer The rough value of diffusion co-efficient of water vapor into air at 25°C may be about __________ cm²/sec.

Mass Transfer The dew point of an unsaturated gas-vapor mixture does not depend upon the __________ of the mixture.

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

Mass Transfer Only small amount of evaporation of water produces large cooling effects because of its

Mass Transfer Which of the following is considered equivalent to one theoretical stage in Mc-Cabe Thiele's method?

Mass Transfer
The rough value of diffusion co-efficient of water vapor into air at 25°C may be about __________ cm²/sec.

Mass Transfer
The dew point of an unsaturated gas-vapor mixture does not depend upon the __________ of the mixture.

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

Mass Transfer
Only small amount of evaporation of water produces large cooling effects because of its

Mass Transfer
Which of the following is considered equivalent to one theoretical stage in Mc-Cabe Thiele's method?