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Mass Transfer

Mass Transfer
For continuous drying of grannular or crystalline material, the dryer used is the __________ dryer.

Tray
Tunnel
Rotary
None of these

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Mass Transfer
Can a cooling tower cool water below the wet bulb temperature of inlet air?

No
Yes ; but height of cooling tower will be prohibitively high
Yes
Yes ; but the air flow rate should be excessively high

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Mass Transfer
Calculation of mass transfer co-efficient is mostly/normally done using __________ theory.

Penetration
Surface renewal
None of the listed here
Film

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Mass Transfer
Absorption factor, for a fixed degree of absorption from a fixed amount of gas should be

< 1
1
> 1
≤ 1

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Mass Transfer
Corresponding to Nusselt number in heat transfer, the dimensionless group in mass transfer is the __________ number.

Schmidt
Stanton
Sherwood
Peclet

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Mass Transfer
The commonly used solvent in supercritical extraction is

Methyl ethyl ketone
Carbon dioxide
Water
Carbon tetrachloride

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