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Mass Transfer

Mass Transfer
Diameter to height ratio for a rashig ring is

0.5
1
2
5

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Mass Transfer
Which of these columns incurs the lowest pressure drop?

Pulse column
Bubble plate column
Packed column (with dumped packing)
Packed column (with stacked packing)

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Mass Transfer
In case of an ideal solution, the total vapor pressure varies __________ with the composition expressed as mole fraction,

Exponentially
Linearly
None of these
Inversely

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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
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
Which of the following is a suitable absorbent for removal of H₂S from natural gas?

Dilute
Vetrocoke solution
Monoethanol amine (MEA)
Hot water

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