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Mass Transfer

Mass Transfer
Pore size of the molecular seive 5A is __________ mm.

50
0.05
5
0.5

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Mass Transfer
Unit of molal diffusivity is

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

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Mass Transfer
For a single component absorber, the operating line is straight only when plotted in term of __________ units.

Partial pressure
Mole ratio
Mole fraction
None of these

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

Vacuum
Tunnel
Tray
Rotary

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Mass Transfer
In physical terms, Schmidt number means

Thermal diffusivity/momentum diffusivity
Mass diffusivity/thermal diffusivity
Thermal diffusivity/mass diffusivity
Momentum diffusivity/mass diffusivity

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Mass Transfer
Pressure drop through plate tower as compared to that through packed tower, for the same duty will be

Less
More
Either A or B; depends on the packing height
Equal

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