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Mass Transfer

Mass Transfer
If moisture content of solid on dry basis is X, then the same on wet basis is

(X + 1)/X
(X - 1)/X
X/(X + 1)
X/(X - 1)

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Mass Transfer
Diameter to height ratio for a rashig ring is

2
0.5
5
1

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Mass Transfer
Leaching of sugar from sugar beets is done by

Hexane
Lime water
Hot water
Dilute H₂SO₄

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Mass Transfer
Unit of molal diffusivity is

Cm²/sec gm . mole
Gm moles/cm. sec
Gm moles/cm² . sec
Gm moles/cm². sec

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Mass Transfer
The operation involved when the soluble material is largely on the surface of an insoluble solid and is merely washed off by the solvent is called

Decoction
Elutriation or elution
None of these
Percolation

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Mass Transfer
Heat in BTU necessary to increase the temperature of 1 lb of gas and its accompanying vapour by 1°F is called the

Specific heat
Sensible heat
Humid heat
Latent heat

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