Mass transfer co-efficient varies as DAB 0.5, according to the _______

1.	Mass transfer co-efficient varies as DAB 0.5, according to the __________ theory.
A.	Film
B.	Surface renewal
C.	Penetration
D.	None of these
Answer» C. Penetration

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Mass transfer co-efficient varies as DAB 0.5, according to the __________ theory.

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