A distillation column with N plates is being operated under normal conditions. At some point of time, the operation is shifted to total reflux condition (i.e., no product and residue are being withdrawn and feed to the column is stopped). At the new steady state,

Mass Transfer
A distillation column with N plates is being operated under normal conditions. At some point of time, the operation is shifted to total reflux condition (i.e., no product and residue are being withdrawn and feed to the column is stopped). At the new steady state,

The top and bottom compositions correspond to the maximum enrichment available

The top and bottom compositions are unchanged with and without total reflux

Composition of vapors and that of liquid do not vary throughout the column

Reboiler load and condenser load are minimum

The top and bottom compositions correspond to the maximum enrichment available

The top and bottom compositions are unchanged with and without total reflux

Composition of vapors and that of liquid do not vary throughout the column

Reboiler load and condenser load are minimum

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Mass Transfer
For turbulent mass transfer in pipes, the Sherwood number depends on the Reynolds number as

Re

Re0.53

Re0.33

Re0.83

Re

Re0.53

Re0.33

Re0.83

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Mass Transfer
Absorption factor, for a fixed degree of absorption from a fixed amount of gas should be

≤ 1

< 1

1

> 1

≤ 1

< 1

1

> 1

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Mass Transfer
During the constant rate period of drying of a solid,

None of these

Increased air humidity decreases the rate of drying

Surface evaporation of unbound moisture occurs

Increasing the air temperature decreases the drying rate

None of these

Increased air humidity decreases the rate of drying

Surface evaporation of unbound moisture occurs

Increasing the air temperature decreases the drying rate

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Mass Transfer
Total reflux in a distillation operation requires minimum

All of these

Condenser load

Reboiler load

Number of plates

All of these

Condenser load

Reboiler load

Number of plates

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Mass Transfer
A coalescer in a mixer-settler liquid-liquid extraction coloumn

Helps in increasing the bubble size entering the settler

Comprises of thin bed of substances of extended surface having high porosity

All of these

Helps in increasing the settling rate of the bubbles

Helps in increasing the bubble size entering the settler

Comprises of thin bed of substances of extended surface having high porosity

All of these

Helps in increasing the settling rate of the bubbles

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Mass Transfer

Mass Transfer A distillation column with N plates is being operated under normal conditions. At some point of time, the operation is shifted to total reflux condition (i.e., no product and residue are being withdrawn and feed to the column is stopped). At the new steady state,

Mass Transfer For turbulent mass transfer in pipes, the Sherwood number depends on the Reynolds number as

Mass Transfer Absorption factor, for a fixed degree of absorption from a fixed amount of gas should be

Mass Transfer During the constant rate period of drying of a solid,

Mass Transfer Total reflux in a distillation operation requires minimum

Mass Transfer A coalescer in a mixer-settler liquid-liquid extraction coloumn

Mass Transfer
A distillation column with N plates is being operated under normal conditions. At some point of time, the operation is shifted to total reflux condition (i.e., no product and residue are being withdrawn and feed to the column is stopped). At the new steady state,

Mass Transfer
For turbulent mass transfer in pipes, the Sherwood number depends on the Reynolds number as

Mass Transfer
Absorption factor, for a fixed degree of absorption from a fixed amount of gas should be

Mass Transfer
During the constant rate period of drying of a solid,

Mass Transfer
Total reflux in a distillation operation requires minimum

Mass Transfer
A coalescer in a mixer-settler liquid-liquid extraction coloumn