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Mass Transfer

Mass Transfer
Sand is dried in foundaries in a___drier.

Fluidisedbed
Vacuum
Rotary
Spray

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Mass Transfer
In physical terms, Schmidt number means

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

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Mass Transfer
__________ extractor is used for the concentration of radioactive nuclear waste.

Seive plate
Mixer-settler
None of the listed here
Pulsed column

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Mass Transfer
In distillation columns, the number of bubble caps per tray primarily depends upon the

Allowable liquid velocity
Allowable gas and liquid velocities
Feed composition
Allowable gas velocity

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Mass Transfer
Moisture in a substance exerting an equilibrium vapour pressure less than that of pure liquid at the same temperature is called the __________ moisture.

None of these
Critical
Unbound
Bound

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Mass Transfer
Absorption (liquid-gas system) with evolution of heat as compared to isothermal absorption results in

All of these
Large number of trays
Large minimum liquid to gas (L/G) ratio
Decreased solute solubility

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