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Mass Transfer

Mass Transfer
Calcium ammonium nitrate (a fertiliser) is dried in a __________ dryer.

Tray
Vacuum
Tunnel
Rotary

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Mass Transfer
If G = insoluble gas in gas stream and L = non-volatile solvent in liquid stream, then the slope of the operating line for the absorber is

None of these
L/G
G/L
Always < 1

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Mass Transfer
Mass transfer co-efficient 'K' according to penetration theory varies with mass dif-fusivity as

D
D1.5
1/D
D0.5

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Mass Transfer
If the path of liquid across the plate is very long as in case of large diameter tower, Murphree efficiency can be __________ percent.

> 100
< 100
100
None of these

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Mass Transfer
Wetted wall tower experiment determines the

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

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Mass Transfer
For the flow of gases through a capillary, with increase in temperature, the permeability __________ as per Knudsen law.

Decreases
Remains same
Either A or B; depends on the gas
Increases

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