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Mass Transfer

Mass Transfer
In a binary system, separation is very efficient, when the relative volatility is

< 1
1
0.5
> 1

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Mass Transfer
The relative volatility of a binary mixture at the azeotropic composition is

1
∞
> 1

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Mass Transfer
Unsaturated air (with dry and wet bulb temperatures being 35 and 25°C respectively) is passed through water spray chamber maintained at 35°C. The air will be

Dehumidified
Cooled
Both A & B
Humidified

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

Surface evaporation of unbound moisture occurs
Increasing the air temperature decreases the drying rate
Increased air humidity decreases the rate of drying
None of these

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Mass Transfer
Moisture content of a substance when at equilibrium with a given partial pressure of the vapour is called the __________ moisture.

Equilibrium
Bound
Unbound
Free

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Mass Transfer
Absorption (liquid-gas system) with evolution of heat as compared to isothermal absorption results in

Large minimum liquid to gas (L/G) ratio
Decreased solute solubility
Large number of trays
All of these

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