With increase in absolute humidity, the dew point of an unsaturated mixture of air and water vapor (at constant pressure and temperature)

Mass Transfer
With increase in absolute humidity, the dew point of an unsaturated mixture of air and water vapor (at constant pressure and temperature)

Remains unchanged

Increases

Decreases linearly

Decreases

Remains unchanged

Increases

Decreases linearly

Decreases

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Mass Transfer
In a single stage extraction process, 10 kg of pure solvent S (containing no solute A) is mixed with 30 kg of feed F containing A at a mass fraction xf = 0.2. The mixture splits into an extract phase E and a raf-finate phase R containing A at xB = 0.5 and xR = 0.05 respectively. The total mass of the extract phase is (in Kg)

10

6.89

8.25

8.89

10

6.89

8.25

8.89

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Mass Transfer
According to the film theory of mass transfer, the mass transfer co-efficient is proportional to (where, D = molecular diffusivity)

D

D2

D0.5

1/D

D

D2

D0.5

1/D

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Mass Transfer
Dew point of an air-water vapor mixture

Corresponding to any point on the humidity chart is obtained by projecting a line through this point parallel to the temperature axis and to the saturation curve

All of the listed here

At constant humidity & total pressure is fixed

Decreases with decrease in pressure

Corresponding to any point on the humidity chart is obtained by projecting a line through this point parallel to the temperature axis and to the saturation curve

All of the listed here

At constant humidity & total pressure is fixed

Decreases with decrease in pressure

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Mass Transfer
Mass transfer co-efficient (K) and diffusivity (D) are related according to film theory as

K ∝ D1.5

K ∝ D

K ∝ √D

K ∝ D2

K ∝ D1.5

K ∝ D

K ∝ √D

K ∝ D2

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Mass Transfer
Which of the following increases during evaporative cooling process with recirculated water supply?

Both B and C

Relative humidity

Partial pressure of vapour

Wet bulb temperature

Both B and C

Relative humidity

Partial pressure of vapour

Wet bulb temperature

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Mass Transfer

Mass Transfer With increase in absolute humidity, the dew point of an unsaturated mixture of air and water vapor (at constant pressure and temperature)

Mass Transfer According to the film theory of mass transfer, the mass transfer co-efficient is proportional to (where, D = molecular diffusivity)

Mass Transfer Dew point of an air-water vapor mixture

Mass Transfer Mass transfer co-efficient (K) and diffusivity (D) are related according to film theory as

Mass Transfer Which of the following increases during evaporative cooling process with recirculated water supply?

Mass Transfer
With increase in absolute humidity, the dew point of an unsaturated mixture of air and water vapor (at constant pressure and temperature)

Mass Transfer
According to the film theory of mass transfer, the mass transfer co-efficient is proportional to (where, D = molecular diffusivity)

Mass Transfer
Dew point of an air-water vapor mixture

Mass Transfer
Mass transfer co-efficient (K) and diffusivity (D) are related according to film theory as

Mass Transfer
Which of the following increases during evaporative cooling process with recirculated water supply?