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Mass Transfer

Mass Transfer
Liquid diffusivity is of the order of __________ cm² /second.

0.1
10-5 to 10-6
0.01
> 1

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Mass Transfer
Schimdt number and Lewis number for pure air at atmospheric conditions are respectively

< 1 and ≈ 1
1 and 0
0 and ≈ 1
>1 and ≈ 1

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Mass Transfer
Steady state equimolal counter diffusion occurs in case of

Binary phase distillation
Liquid-liquid extraction
Leaching
Absorption

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Mass Transfer
A slurry is to be dried to produce flaky solid. Which dryer would you recommend?

Dielectric dryer
Rotary dryer
Drum dryer
Spray dryer

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Mass Transfer
The relative saturation of an unsaturated mixture of gas and vapor is independent of the

Nature of the vapor
Temperature of the mixture
Composition of the mixture
None of these

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Mass Transfer
Gaseous diffusivity at atmospheric pressure is of the order of __________ cm²/second.

5 to 10
> 10
1
1 to 5

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