In a distillation operation, what is the effect of the temperature of the reflux stream (given below) on the condenser and reboiler loads? Reflux conditions:(i) Reflux stream is completely liquid and is at its bubble point.(ii) Reflux stream is below its bubble point.

Mass Transfer
In a distillation operation, what is the effect of the temperature of the reflux stream (given below) on the condenser and reboiler loads? Reflux conditions:(i) Reflux stream is completely liquid and is at its bubble point.(ii) Reflux stream is below its bubble point.

Condenser and reboiler loads are the same in both the cases

Reboiler load is the same in both the cases but condenser load is higher in case (ii)

Both condensor and reboiler loads are higher in case (ii) as compared to case (i)

Condenser load is the same in both the cases but reboiler load is higher in case (ii)

Condenser and reboiler loads are the same in both the cases

Reboiler load is the same in both the cases but condenser load is higher in case (ii)

Both condensor and reboiler loads are higher in case (ii) as compared to case (i)

Condenser load is the same in both the cases but reboiler load is higher in case (ii)

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Mass Transfer
The wet and 'dry bulb temperature for a vapour-gas mixture are 25°C and 30°C respectively. If the mixture is heated to 45°C at constant pressure, the wet bulb temperature will be __________ °C.

25

< 25

> 25

-25

25

< 25

> 25

-25

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Mass Transfer
At a given equilibrium pressure, with increase in temperature, the concentration of adsorbed gas on solid adsorbant

Decreases

Increases exponentially

Remains unchanged

Increases

Decreases

Increases exponentially

Remains unchanged

Increases

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Mass Transfer
Steam distillation is not recommended to be used, if the

Material to be distilled is thermally unstable or has the tendency to react with other components associated with it, at the boiling temperature

Azeotropic mixture is to be separated and the final product is miscible with water

Liquids decompose, if distilled directly at atmospheric pressure

Material can not be distilled by indirect heating even under low pressure, because of the high boiling temperature

Material to be distilled is thermally unstable or has the tendency to react with other components associated with it, at the boiling temperature

Azeotropic mixture is to be separated and the final product is miscible with water

Liquids decompose, if distilled directly at atmospheric pressure

Material can not be distilled by indirect heating even under low pressure, because of the high boiling temperature

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Mass Transfer
In case of gases, the binary diffusivity is proportional to (where, P = pressure)

P

1/P

√P

1/√P

P

1/P

√P

1/√P

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Mass Transfer
In case of cooling towers, the ratio of the rates of heat and mass transfer is indicated by the __________ number.

Grashoff

Lewis

Sherwood

None of these

Grashoff

Lewis

Sherwood

None of these

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Mass Transfer

Mass Transfer In a distillation operation, what is the effect of the temperature of the reflux stream (given below) on the condenser and reboiler loads? Reflux conditions:(i) Reflux stream is completely liquid and is at its bubble point.(ii) Reflux stream is below its bubble point.

Mass Transfer The wet and 'dry bulb temperature for a vapour-gas mixture are 25°C and 30°C respectively. If the mixture is heated to 45°C at constant pressure, the wet bulb temperature will be __________ °C.

Mass Transfer At a given equilibrium pressure, with increase in temperature, the concentration of adsorbed gas on solid adsorbant

Mass Transfer Steam distillation is not recommended to be used, if the

Mass Transfer In case of gases, the binary diffusivity is proportional to (where, P = pressure)

Mass Transfer In case of cooling towers, the ratio of the rates of heat and mass transfer is indicated by the __________ number.

Mass Transfer
In a distillation operation, what is the effect of the temperature of the reflux stream (given below) on the condenser and reboiler loads? Reflux conditions:(i) Reflux stream is completely liquid and is at its bubble point.(ii) Reflux stream is below its bubble point.

Mass Transfer
The wet and 'dry bulb temperature for a vapour-gas mixture are 25°C and 30°C respectively. If the mixture is heated to 45°C at constant pressure, the wet bulb temperature will be __________ °C.

Mass Transfer
At a given equilibrium pressure, with increase in temperature, the concentration of adsorbed gas on solid adsorbant

Mass Transfer
Steam distillation is not recommended to be used, if the

Mass Transfer
In case of gases, the binary diffusivity is proportional to (where, P = pressure)

Mass Transfer
In case of cooling towers, the ratio of the rates of heat and mass transfer is indicated by the __________ number.