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Mass Transfer

Mass Transfer
Small dia distillation column can be a

Any of these
Sieve tray
Bubble cap
Packed column

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Mass Transfer
With increase in the mass velocity of the gas, the rate of drying during the constant rate period __________ , if the conduction and radiation through the solid are negligible.

Decreases
Increases
Remains same
Increases linearly

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Mass Transfer
For the same process conditions, the reflux ratio of an unlagged distillation column

None of these
Decreases in winter
Increases in winter
Increases in summer

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Mass Transfer
Absorption factor, for a fixed degree of absorption from a fixed amount of gas should be

< 1
≤ 1
1
> 1

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Mass Transfer
Separation of __________ employs gaseous diffusion process.

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

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Mass Transfer
Flash distillation is suitable for separating the constituents of a binary system, which

Have very wide boiling points
Have very close boiling points
Form minimum boiling azeotrope
Form constant boiling azeotrope

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