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Mass Transfer

Mass Transfer
Tea percolation employs

None of these
Leaching
Liquid-liquid extraction
Absorption

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Mass Transfer
An azeotropic mixture is a __________ mixture.

None of these
Constant boiling point
Ternary
Binary

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Mass Transfer
Surface renewal model of mass transfer was enunciated by

Fick
Stefan
Toor and Marchello
Danckwerts

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Mass Transfer
The mass diffusivity, the thermal diffusivity and the eddy momentum diffusivity are same for, NPr = NSc = __________

2
1
3
4

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Mass Transfer
Which of the following parameters remains constant during chemical dehumidifica-tion?

None of these
Partial pressure of vapour
Wet bulb temperature
Dry bulb temperature

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Mass Transfer
For the gas absorption, the height of a transfer unit, based on the gas phase is given by (G: superficial molar gas velocity, L: superficial molar liquid velocity, FG:mass transfer co-efficient, mols/m² , a: in-terfacial area per unit volume of tower)

L/(FG.G)
F/(FG.a)
FG/(G.a)
(G.a)/FG

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