The Reynolds number of the liquid was increased 100 fold for a laminar falling film used for gas-liquid contacting. Assuming penetrating theory is applicable, the fold increase in the mass transfer co-efficient (Kc) for the same sytem is

Mass Transfer
The Reynolds number of the liquid was increased 100 fold for a laminar falling film used for gas-liquid contacting. Assuming penetrating theory is applicable, the fold increase in the mass transfer co-efficient (Kc) for the same sytem is

1

5

10

100

1

5

10

100

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

Wet bulb temperature

Both B and C

Partial pressure of vapour

Relative humidity

Wet bulb temperature

Both B and C

Partial pressure of vapour

Relative humidity

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Mass Transfer
Flights in a rotary dryer are provided to

Lift and shower the solids thus exposing it thoroughly to the drying action of the gas

Reduce the residence time of solid

None of these

Increase the residence time of the solid

Lift and shower the solids thus exposing it thoroughly to the drying action of the gas

Reduce the residence time of solid

None of these

Increase the residence time of the solid

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Mass Transfer
Critical humidity of a solid salt means the humidity

Both A and B

Below which it will always stay dry

Above Which it will always become dry and below which it will always stay damp

Above which it will always become damp

Both A and B

Below which it will always stay dry

Above Which it will always become dry and below which it will always stay damp

Above which it will always become damp

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Mass Transfer
The most economical range of absorption factor is

2 to 2.5

2.5 to 3

5 to 10

1.25 to 2

2 to 2.5

2.5 to 3

5 to 10

1.25 to 2

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Mass Transfer
Separation of __________ employs gaseous diffusion process.

Isotopes of helium

N₂ and O₂ from air

SO₂ and air

Isotopes of uranium

Isotopes of helium

N₂ and O₂ from air

SO₂ and air

Isotopes of uranium

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Mass Transfer

Mass Transfer The Reynolds number of the liquid was increased 100 fold for a laminar falling film used for gas-liquid contacting. Assuming penetrating theory is applicable, the fold increase in the mass transfer co-efficient (Kc) for the same sytem is

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

Mass Transfer Flights in a rotary dryer are provided to

Mass Transfer Critical humidity of a solid salt means the humidity

Mass Transfer The most economical range of absorption factor is

Mass Transfer Separation of __________ employs gaseous diffusion process.

Mass Transfer
The Reynolds number of the liquid was increased 100 fold for a laminar falling film used for gas-liquid contacting. Assuming penetrating theory is applicable, the fold increase in the mass transfer co-efficient (Kc) for the same sytem is

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

Mass Transfer
Flights in a rotary dryer are provided to

Mass Transfer
Critical humidity of a solid salt means the humidity

Mass Transfer
The most economical range of absorption factor is

Mass Transfer
Separation of __________ employs gaseous diffusion process.