Mass transfer co-efficient varies as Dᴀʙ^0.5, according to the ____

1.	Mass transfer co-efficient varies as Dᴀʙ^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 Dᴀʙ^0.5, according to the __________ theory.

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