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Mass Transfer

Mass Transfer
Operating velocity in a packed tower is usually __________ the flooding velocity.

Equal to
More than
Twice
Half

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Mass Transfer
______ extractor uses centrifugal force for separating the two phases.

None of the listed here
Schiebel
Podbielniak
Treybal

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Mass Transfer
__________ column is preferred to be used, when a high liquid hold up is required in a reactor for gas-liquid reaction.

Tray
Bubble
Packed
Spray

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Mass Transfer
In case of liquids, the binary diffusivity is proportional to (where, T = temperature)

T
√T
T²
1/T

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Mass Transfer
Molecular seives are porous

Synthetic zeolites crystals/metal alumino-silicates
Silica
None of these
Alumina

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Mass Transfer
Flooding in a column results due to

High pressure drop
Low velocity of the liquid
High temperature
Low pressure drop

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