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Mass Transfer

Mass Transfer
Tea percolation employs

Absorption
Liquid-liquid extraction
None of these
Leaching

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Mass Transfer
All moisture in a non-hygroscopic material is the __________ moisture.

Free
Unbound
Equilibrium
Bound

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Mass Transfer
Wetted wall tower experiment determines the

Volumetric co-efficient
None of these
Molal diffusivity
Mass transfer co-efficient

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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)

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

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

Low viscosity
Small latent heat
None of these
Large latent heat

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Mass Transfer
In a packed bed absorption column, the channelling will be noted by the

Sharp drop in pressure drop
None of these
Increase in flow rate
Sharp rise in pressure drop

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