The feed to fractionating column is changed from saturated vapour to saturated liquid. If the separation and reflux ratio remains unchanged, the number of ideal stages will

Mass Transfer
The feed to fractionating column is changed from saturated vapour to saturated liquid. If the separation and reflux ratio remains unchanged, the number of ideal stages will

Remains same

Increase

Decrease

Depend on saturated boiling point; may increase or decrease

Remains same

Increase

Decrease

Depend on saturated boiling point; may increase or decrease

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Mass Transfer
A natural draft cooling tower is filled with wooden grids, which covers about __________ percent of the tower height.

70-80

90-100

44119

30-40

70-80

90-100

44119

30-40

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Mass Transfer
Which of the following processes is followed by unsaturated air (with dry bulb temperature 12°C and relative humidity 47%) passing through water spray washer (temperature of water being constant at 40°C?

Humidification only

Both heating and humidification

Heating only

Evaporative cooling

Humidification only

Both heating and humidification

Heating only

Evaporative cooling

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Mass Transfer
The binary diffusivity in gases and liquids vary respectively as

T3/2 and √T

T and T3/2

√T and T3/2

T3/2 and T

T3/2 and √T

T and T3/2

√T and T3/2

T3/2 and T

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Mass Transfer
The rate of mass transfer is not dependent upon the

Interfacial surface exposed between the phases

Both A & B

Degree of dispersion of one fluid in the other

None of these

Interfacial surface exposed between the phases

Both A & B

Degree of dispersion of one fluid in the other

None of these

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Mass Transfer
Diffusion co-efficient generally depends upon the temperature, pressure & the nature of the components of the system. Its dimension is not the same as that of the

Mass transfer co-efficient

Thermal diffusivity

Volumetric diffusivity

Kinematic viscosity

Mass transfer co-efficient

Thermal diffusivity

Volumetric diffusivity

Kinematic viscosity

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Mass Transfer

Mass Transfer The feed to fractionating column is changed from saturated vapour to saturated liquid. If the separation and reflux ratio remains unchanged, the number of ideal stages will

Mass Transfer A natural draft cooling tower is filled with wooden grids, which covers about __________ percent of the tower height.

Mass Transfer Which of the following processes is followed by unsaturated air (with dry bulb temperature 12°C and relative humidity 47%) passing through water spray washer (temperature of water being constant at 40°C?

Mass Transfer The binary diffusivity in gases and liquids vary respectively as

Mass Transfer The rate of mass transfer is not dependent upon the

Mass Transfer Diffusion co-efficient generally depends upon the temperature, pressure & the nature of the components of the system. Its dimension is not the same as that of the

Mass Transfer
The feed to fractionating column is changed from saturated vapour to saturated liquid. If the separation and reflux ratio remains unchanged, the number of ideal stages will

Mass Transfer
A natural draft cooling tower is filled with wooden grids, which covers about __________ percent of the tower height.

Mass Transfer
Which of the following processes is followed by unsaturated air (with dry bulb temperature 12°C and relative humidity 47%) passing through water spray washer (temperature of water being constant at 40°C?

Mass Transfer
The binary diffusivity in gases and liquids vary respectively as

Mass Transfer
The rate of mass transfer is not dependent upon the

Mass Transfer
Diffusion co-efficient generally depends upon the temperature, pressure & the nature of the components of the system. Its dimension is not the same as that of the