Chemical Engineering :: Mass Transfer
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The operating cost of a distillation column at minimum reflux ratio is
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The reflux to a distillation column is 100 moles/hr, when the overhead product rate is 50 moles/hr. The reflux ratio is
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Molecular diffusivity of a liquid
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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.
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Henry's law states that the
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Ammonia present in the coke oven gas is removed by washing with
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With increase in temperature, the leaching rate increases due to
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Which of the following processes is not an example of adsorption applied to gaseous separations ?
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The critical moisture content in case of drying indicates the __________ rate period.
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Pick out the wrong statement
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A.
partial pressure of a component over a solution is proportional to its mole fraction in the liquid.
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B.
partial pressure of a component over a solution is proportional to the mole fraction in the vapour.
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C.
vapour pressure is equal to the product of the mole fraction and total pressure.
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D.
partial pressure is equal to the product of the mole fraction and total pressure.
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A.
A horizontal line on the humidity chart indicates the temperature changes at constant molal humidity.
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B.
When water is cooled from 80 to 70°C by exposure to the air with a wet bulb temperature of 60°C, then both the approach & the range would be 10°C.
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C.
For unsaturated air-water vapor mixture at atmospheric conditions, the wet bulb temperature & adiabatic cooling lines are the same.
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D.
Relative saturation of unsaturated mixture of water vapor & air can not be increased by either reducing the mixture temperature or by increasing the total pressure.
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