An air-water vapour mixture has a dry bulb temperature of 60°C and a dew point temperature of 40°C. The total pressure is 101.3 kPa and the vapour pressure of water at 40°C and 60°C are 7.30 kPa and 19.91 kPa respectively.The humidity of air sample expressed as kg of water vapour/kg of dry air is

Mass Transfer
An air-water vapour mixture has a dry bulb temperature of 60°C and a dew point temperature of 40°C. The total pressure is 101.3 kPa and the vapour pressure of water at 40°C and 60°C are 7.30 kPa and 19.91 kPa respectively.The humidity of air sample expressed as kg of water vapour/kg of dry air is

0.122

0.048

0.079

0.152

0.122

0.048

0.079

0.152

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Mass Transfer
Steam distillation is used for separation of high boiling

none of the listed here

Volatile impurity from still higher boiling substances

Substances from non-volatile impurities

Both of the options given here

none of the listed here

Volatile impurity from still higher boiling substances

Substances from non-volatile impurities

Both of the options given here

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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

None of these

> 100

< 100

100

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Mass Transfer
Chemisorption compared to physical absorption has

Lower capacity of the solvent for the solute gas

Lower adsorption rate

Increased utilisation of stagnant zones of the liquid phase

None of these

Lower capacity of the solvent for the solute gas

Lower adsorption rate

Increased utilisation of stagnant zones of the liquid phase

None of these

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Mass Transfer
Relative humidity is the ratio of the

Actual humidity to saturation humidity

Partial pressure of the vapour to the vapour pressure of the liquid at gas temperature

Partial pressure of the vapour to the vapour pressure of the liquid at room temperature

None of these

Actual humidity to saturation humidity

Partial pressure of the vapour to the vapour pressure of the liquid at gas temperature

Partial pressure of the vapour to the vapour pressure of the liquid at room temperature

None of these

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Mass Transfer
With increase in temperature, the rate of leaching increases, because the

Thermal conductivity of solute increases

None of these

Viscosity of solvent decreases

Diffusivity of solute increases

Thermal conductivity of solute increases

None of these

Viscosity of solvent decreases

Diffusivity of solute increases

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Mass Transfer

Mass Transfer Steam distillation is used for separation of high boiling

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 Chemisorption compared to physical absorption has

Mass Transfer Relative humidity is the ratio of the

Mass Transfer With increase in temperature, the rate of leaching increases, because the

Mass Transfer
Steam distillation is used for separation of high boiling

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
Chemisorption compared to physical absorption has

Mass Transfer
Relative humidity is the ratio of the

Mass Transfer
With increase in temperature, the rate of leaching increases, because the