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Mass Transfer

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

Less than
None of these
More than
Equal to

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Mass Transfer
The dew point of a saturated gas phase equals the __________ temperature.

None of these
Gas
Wet bulb
Room

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Mass Transfer
Penetration theory relates the average mass transfer co-efficient (K) with diffusivity (D) as

K ∝ D1.5
K ∝ D2
K ∝ D
K ∝ √D

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Mass Transfer
Moisture contained by a substance in excess of the equilibrium moisture is called the __________ moisture.

Free
Unbound
Critical
Bound

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Mass Transfer
Out of the following gas-liquid contacting devices, for a given set of operating conditions, gas pressure drop is the least in __________ tower.

Perforated tray
Packed
Bubble cap
Wetted wall

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Mass Transfer
Schmidt number is given by

Μ/ρDAB
Re.Pe
Re/Pe
Sh x Pe

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