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Mass Transfer

Mass Transfer
Surface renewal model of mass transfer was enunciated by

Danckwerts
Fick
Stefan
Toor and Marchello

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Mass Transfer
Dry bulb temperature of the gas is __________ the wet bulb temperature.

Less than
Equal to
None of these
More than

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Mass Transfer
In a packed absorption tower, if the equilibrium and operating lines are both straight lines, then the ratio, HETP/HTUOG __________ the absorption factor.

Is one at unity value of
Both A and B
Increases with increase in
Neither A nor B

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Mass Transfer
Diameter to height ratio for a rashig ring is

0.5
5
2
1

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Mass Transfer
At a given equilibrium pressure, with increase in temperature, the concentration of adsorbed gas on solid adsorbant

Remains unchanged
Decreases
Increases exponentially
Increases

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Mass Transfer
Separation of __________ employs gaseous diffusion process.

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

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