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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