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Mass Transfer

Mass Transfer
__________ columns are used for liquid dispersion in a continuous gas phase.

Bubble cap
Sieve plate
Pulse
Packed

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Mass Transfer
The Reynolds number of the liquid was increased 100 fold for a laminar falling film used for gas-liquid contacting. Assuming penetrating theory is applicable, the fold increase in the mass transfer co-efficient (Kc) for the same sytem is

10
1
100
5

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Mass Transfer
Leaching of uranium ore and gold ore is done in

Bollman extractor
Pachuka tanks
None of these
Centrifugal extractor

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Mass Transfer
Diameter of raschig rings used in packed tower in industry is normally around __________ inches.

8
12
18
2

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Mass Transfer
With increase in gas rate, the number of transfer units, NtoG, for a fixed degree of absorption by a fixed amount of solvent

Decreases linearly
Increases
Decreases
Remains unaffected

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Mass Transfer
COâ‚‚ can be absorbed by

Alumina
Hot cupric oxide
Heated charcoal
Cold Ca(OH)â‚‚

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