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Mass Transfer

Mass Transfer
The most economical range of absorption factor is

2.5 to 3
5 to 10
1.25 to 2
2 to 2.5

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Mass Transfer
Azeotropic distillation is employed to separate

Mixture with very high relative volatility
Heat sensitive materials
High boiling mixture
Constant boiling mixture

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Mass Transfer
In an absorption coloumn, the flooding velocity for random packing is __________ that for stacked/regular packing.

Greater than
Either A, or B ; depends on the type of packing
Smaller than
Equal to

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Mass Transfer
Schmidt number is given by

Μ/ρDAB
Re/Pe
Sh x Pe
Re.Pe

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Mass Transfer
Only small amount of evaporation of water produces large cooling effects because of its

Small latent heat
None of these
Low viscosity
Large latent heat

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Mass Transfer
The caking of crystals can be prevented by

Coating the product with inert material
Maintaining low critical humidity
Maintaining high critical humidity
Both A and C

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