Mass Transfer
Unsaturated air (with dry bulb and wet bulb temperatures being 45°C and 25°C respectively) is passed through a water spray chamber maintained at 23°C. The air will be cooled and

Humidified at constant wet bulb temperature
Dehumidified
None of these
Humidified with wet bulb temperature decreasing

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

Helps in increasing the settling rate of the bubbles
Helps in increasing the bubble size entering the settler
All of these
Comprises of thin bed of substances of extended surface having high porosity

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Mass Transfer
For the air water system under ambient conditions, the adiabatic saturation temperature and the wet bulb temperature are nearly equal, because

They are always equal under all circumstances
Lewis number is close to unity
Water has a high latent heat of evaporation
Solubility of the components of air in water is very small

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Mass Transfer
For a ternery mixture, in which equilateral triangular co-ordinate is used in leaching and extraction, a __________ of the equilateral triangular co-ordinates.

Pure component is represented by the apex
Ternery mixture is represented by the sides
Binary mixture is represented by the apex
Binary mixture is represented by any point inside

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