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Mass Transfer

Mass Transfer
Sand is dried in foundaries in a___drier.

Fluidisedbed
Spray
Vacuum
Rotary

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Mass Transfer
Hydrogenation of oil is carried out in a/an __________ in Vanaspati manufacturing plant.

Agitated vessel
Bubble cap column
Packed tower
Sieve tray column

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Mass Transfer
Steady state equimolal counter diffusion is encountered in

All of these
Absorption of NH₃ from air by water
Separation of a binary mixture by distillation
All liquid-liquid diffusion systems

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Mass Transfer
Dry bulb temperature of the gas is __________ the wet bulb temperature.

Equal to
None of these
Less than
More than

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Mass Transfer
Wetted wall tower experiment determines the

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

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Mass Transfer
The cooling effect in a cooling tower can not be increased by

None of these
Lowering the barometric pressure
Increasing the air velocity over the wet surfaces
Reducing the humidity of entering air

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