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

Decrease

Depend on saturated boiling point; may increase or decrease

Increase

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Mass Transfer
The binary diffusivity in gases at atmospheric conditions is about

10-1 cm²/sec

10-3 sec/cm

10-9 cm/sec

10-4 cm²/seC₂

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Mass Transfer
Humid volume is the total volume in m³ of 1 kg of

Gas plus its accompanying vapour at 1 atm. and room temperature

Vapour laden gas at 1 atm. and gas temperature

Gas plus its accompanying vapour at 1 atm. and gas temperature

Vapour laden gas at 1 atm. and room temperature

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Mass Transfer
For water-ethanol system, the minimum reflux ratio

Is computed from the intercept of the operating line

Is the optimum reflux ratio

Cannot be computed

Is computed from the slope of the upper operating line that is tangent to the equilibrium curve

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Mass Transfer
The Schmidt number which is defined as, μ/ρ D, is the ratio of the

Momentum diffusivity to the mass dif-fusivity

Momentum diffusivity to the thermal diffusivity

Thermal diffusivity to the mass diffusivity

None of these

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Mass Transfer
If the path of liquid across the plate is very long as in case of large diameter tower, Murphree efficiency can be __________ percent.

None of these

100

> 100

< 100

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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 The binary diffusivity in gases at atmospheric conditions is about

Mass Transfer Humid volume is the total volume in m³ of 1 kg of

Mass Transfer For water-ethanol system, the minimum reflux ratio

Mass Transfer The Schmidt number which is defined as, μ/ρ D, is the ratio of the

Mass Transfer If the path of liquid across the plate is very long as in case of large diameter tower, Murphree efficiency can be __________ percent.

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
The binary diffusivity in gases at atmospheric conditions is about

Mass Transfer
Humid volume is the total volume in m³ of 1 kg of

Mass Transfer
For water-ethanol system, the minimum reflux ratio

Mass Transfer
The Schmidt number which is defined as, μ/ρ D, is the ratio of the

Mass Transfer
If the path of liquid across the plate is very long as in case of large diameter tower, Murphree efficiency can be __________ percent.