For experimental determination of mass transfer co-efficient by wetted wall tower, the mass transfer area is

For experimental determination of mass transfer co-efficient by wetted

1.	For experimental determination of mass transfer co-efficient by wetted wall tower, the mass transfer area is
A.	calculated
B.	unknown
C.	known
D.	not required
Answer» D. not required

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For experimental determination of mass transfer co-efficient by wetted wall tower, the mass transfer area is

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