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Mass Transfer

Mass Transfer
__________ column is used in gas absorption process.

Packed
Seive/perforated tray
Bubble cap
Wetted wall

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Mass Transfer
For experimental determination of mass transfer co-efficient by wetted wall tower, the mass transfer area is

Calculated
Not required
Known
Unknown

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Mass Transfer
Azeotropic distillation is employed to separate

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

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Mass Transfer
If mass diffusivity in a mixture is equal to the thermal diffusivity, then the Lewis number is

< 1
1
> 1

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Mass Transfer
The equipment frequently used for adiabatic humidification-cooling operation with recirculating liquid is

Induced draft cooling tower
Natural draft cooling tower
Spray chamber
None of these

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Mass Transfer
The dimension of diffusivity is same as that of the

Kinematic viscosity
Velocity head
Density
Molal concentration

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