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Mass Transfer

Mass Transfer
_______ number indicates the ratio of the rates of the heat and mass transfer incase of a cooling tower.

Sherwood
Stanton
Peclet
Lewis

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Mass Transfer
In paper industry, paper is dried in a __________ dryer.

Heated cylinder
Tunnel
Conveyor
Festoon

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Mass Transfer
HETP is numerically equal to HTU, only when the operating line

Lies above the equilibrium line
Lies below the equilibrium line
And equilibrium lines are parallel
Is far from the equilibrium line

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Mass Transfer
The vapour pressure exerted by the moisture contained in a wet solid depends upon the

Temperature
Nature of the solid
All of these
Nature of the moisture

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Mass Transfer
In case of absorption & stripping, the interface of the liquid & gas phases are present in equilibrium, when the diffusional resistance of __________ is zero.

All of these
Liquid phase
Interface
Gas phase

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Mass Transfer
Separation of __________ employs gaseous diffusion process.

Isotopes of helium
N₂ and O₂ from air
Isotopes of uranium
SO₂ and air

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