Experiments were conducted to determine the flux of a species A in a stagnant medium across a gas-liquid interface. The overall mass transfer co-efficient based on the liquid side for dilute systems for the above was estimated to be 4 x 10⁻³ kg mole/m².s. The equilibrium data for the system is given as y = 2x. The flux across the interface (in kg mole/m² .s) for bulk concentrations of A in gas phase and liquid phase as y = 0.4 and x = 0.01 respectively is

Mass Transfer
Experiments were conducted to determine the flux of a species A in a stagnant medium across a gas-liquid interface. The overall mass transfer co-efficient based on the liquid side for dilute systems for the above was estimated to be 4 x 10⁻³ kg mole/m².s. The equilibrium data for the system is given as y = 2x. The flux across the interface (in kg mole/m² .s) for bulk concentrations of A in gas phase and liquid phase as y = 0.4 and x = 0.01 respectively is

8.5 x 10⁻³

5.6 x 10⁻³

5.6 x 10⁻⁴

8.5 x 10⁻⁴

8.5 x 10⁻³

5.6 x 10⁻³

5.6 x 10⁻⁴

8.5 x 10⁻⁴

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Mass Transfer
The term "approach" in a cooling tower refers to the difference in the temperature of the

None of these

Hot water entering the tower and the wet bulb temperature of the surrounding air

Cold water leaving the tower and the wet bulb temperature of the surrounding air

Hot water entering and the cooled water leaving the cooling tower

None of these

Hot water entering the tower and the wet bulb temperature of the surrounding air

Cold water leaving the tower and the wet bulb temperature of the surrounding air

Hot water entering and the cooled water leaving the cooling tower

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Mass Transfer
The reason for preferring packed towers over plate towers in distillation practice is that the packed tower operation gives

High pressure drop and low hold up

Low pressure drop and high hold up

Low pressure drop and low hold up

High pressure drop and high hold up

High pressure drop and low hold up

Low pressure drop and high hold up

Low pressure drop and low hold up

High pressure drop and high hold up

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Mass Transfer
If the specific heats of a gas and a vapor are 0.2KJ/Kg.°K and 1.5 KJ/Kg.°K respectively, and the humidity is 0.01; the humid heat in KJ/°Kg. is

0.31

0.215

0.017

0.107

0.31

0.215

0.017

0.107

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Mass Transfer
Steady state equimolal counter diffusion is encountered in

Separation of a binary mixture by distillation

Absorption of NH₃ from air by water

All of these

All liquid-liquid diffusion systems

Separation of a binary mixture by distillation

Absorption of NH₃ from air by water

All of these

All liquid-liquid diffusion systems

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

Increasing the air temperature decreases the drying rate

Increased air humidity decreases the rate of drying

Surface evaporation of unbound moisture occurs

None of these

Increasing the air temperature decreases the drying rate

Increased air humidity decreases the rate of drying

Surface evaporation of unbound moisture occurs

None of these

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Mass Transfer

Mass Transfer The term "approach" in a cooling tower refers to the difference in the temperature of the

Mass Transfer The reason for preferring packed towers over plate towers in distillation practice is that the packed tower operation gives

Mass Transfer If the specific heats of a gas and a vapor are 0.2KJ/Kg.°K and 1.5 KJ/Kg.°K respectively, and the humidity is 0.01; the humid heat in KJ/°Kg. is

Mass Transfer Steady state equimolal counter diffusion is encountered in

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

Mass Transfer
The term "approach" in a cooling tower refers to the difference in the temperature of the

Mass Transfer
The reason for preferring packed towers over plate towers in distillation practice is that the packed tower operation gives

Mass Transfer
If the specific heats of a gas and a vapor are 0.2KJ/Kg.°K and 1.5 KJ/Kg.°K respectively, and the humidity is 0.01; the humid heat in KJ/°Kg. is

Mass Transfer
Steady state equimolal counter diffusion is encountered in

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