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Mass Transfer

Mass Transfer
Leaching of coarse solid lumps is also termed as

Agitation and settling
Percolation
Decoction
Dissolution

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Mass Transfer
The value of Lewis number (Le = Sc/Pr) for air-water vapour system is around

1
600
3.97
0.24

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Mass Transfer
Ammonia present in the coke oven gas is removed by washing with

Dilute ammoniacal liquor
Caustic solution
Ethanolamine
Dilute HCl

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Mass Transfer
Most important factor to be considered in the selection of packings for absorbers is the __________ of packing.

Cost
Durability
Porosity
Size

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Mass Transfer
The value of NA/(NA + NB), for steady state equimolal counter diffusion of two gases 'A' and 'B' is

1
0.5
2
∞

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Mass Transfer
Lewis number (Le) is

Pr x St
Sh x Pr
St x Sh
Sc x Pr

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