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Mass Transfer

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

1
2
0.6
0.5

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Mass Transfer
Humidity chart is useful for the solution of problems concerning condensation, vaporisation and air conditioning. At a given dry bulb temperature, value of humidity obtained from the humidity chart directly, is in terms of __________ humidity.

Percentage
None of these
Molal
Relative

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Mass Transfer
Rotary dryers cannot handle __________ materials.

Dry
Grannular
Free flowing
Sticky

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Mass Transfer
It takes 6 hours to dry a wet solid from 50% moisture content to the critical moisture content of 15%. How much longer it will take to dry the solid to 10% moisture content, under the same drying conditions? (The equilibrium moisture content of the solid is 5%).

51 min
71 min
15 min
94 min

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Mass Transfer
Reverse osmosis is also called

Diffusion
Ultrafiltration
Dialysis
Electrodilysis

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Mass Transfer
In case of an unsaturated mixture of gas and vapor, the percentage saturation is __________ its relative saturation.

Lower than
Equal to
Higher than
Either A or B, depends on the mixture composition

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