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Mass Transfer

Mass Transfer
Sand is dried in foundaries in a___drier.

Spray
Rotary
Vacuum
Fluidisedbed

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Mass Transfer
In a solution containing 0.30 Kg mole of solute and 600 kg of solvent, the molality is

0.6
2
0.5
1

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Mass Transfer
Which of the following increases during evaporative cooling process with recirculated water supply?

Relative humidity
Wet bulb temperature
Both B and C
Partial pressure of vapour

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Mass Transfer
Diffusion co-efficient generally depends upon the temperature, pressure & the nature of the components of the system. Its dimension is not the same as that of the

Thermal diffusivity
Kinematic viscosity
Volumetric diffusivity
Mass transfer co-efficient

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Mass Transfer
Large scale drying of sugar is done in a __________ dryer.

Tray
Spouted bed
Rotary
Truck

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Mass Transfer
The feed to fractionating column is changed from saturated vapour to saturated liquid. If the separation and reflux ratio remains unchanged, the number of ideal stages will

Increase
Depend on saturated boiling point; may increase or decrease
Decrease
Remains same

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