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Mass Transfer

Mass Transfer
An azeotropic mixture is a __________ mixture.

Constant boiling point
None of these
Ternary
Binary

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Mass Transfer
The binary diffusivity in gases at atmospheric conditions is about

10-1 cm²/sec
10-3 sec/cm
10-9 cm/sec
10-4 cm²/seC₂

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Mass Transfer
According to the film theory of mass transfer, the mass transfer co-efficient is proportional to (where, D = molecular diffusivity)

1/D
D2
D0.5
D

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

√T
T
1/T
T²

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Mass Transfer
Deairation (removal of O₂) of water is done by

Absorption
Adsorption
Rectification
Ion-exchange

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Mass Transfer
CO₂ can be absorbed by

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

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