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Mass Transfer

Mass Transfer
CO₂ can be absorbed by

Hot cupric oxide
Alumina
Cold Ca(OH)₂
Heated charcoal

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Mass Transfer
The percentage humidity is less than the relative humidity only at __________ percent humidity.

Zero
Hundred
None of these
Both zero and hundred

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Mass Transfer
Which of the following binary systems is an example of a maximum boiling azeotrope?

Water-hydrochloric acid
Water-ethyl alcohol
Acetone-carbon disulphide
None of the listed here

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Mass Transfer
Condensation of a vapour-gas mixture just begins, when (where, p = partial pressure of the vapour P = vapour pressure of the liquid )

P >>P
P = P
P < P
P

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Mass Transfer
The efficiency of a plate column will be maximum, when the flow is ideal __________ the plate.

Above
Across
Neither A nor B
Both A & B

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Mass Transfer
Leaching of coffee from coffee beans is done by

Hexane
Dilute H₂SO₄ (hot)
Hot water
Lime water

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