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Mass Transfer

Mass Transfer
Mass transfer co-efficient varies as DAB0.5, according to the __________ theory.

Film
Penetration
Surface renewal
None of these

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Mass Transfer
Pore size of the molecular seive 5A is __________ mm.

0.05
0.5
5
50

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Mass Transfer
H₂S present in naphtha reformed gas is removed by absorbing with

Vacuum gas oil
Ethanolamine
HCl
K₂CO₃

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

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

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Mass Transfer
Most important factor to be considered in the selection of packings for absorbers is the __________ of packing.

Durability
Cost
Size
Porosity

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Mass Transfer
During drying operation, it is easier to remove the __________ moisture.

Bound
Unbound
Critical
Equilibrium

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