Out of the following gas-liquid contacting devices, for a given set of operating conditions, gas pressure drop is the least in __________ tower.

Out of the following gas-liquid contacting devices, for a given set of

1.	Out of the following gas-liquid contacting devices, for a given set of operating conditions, gas pressure drop is the least in __________ tower.
A.	wetted wall
B.	bubble cap
C.	perforated tray
D.	packed
Answer» B. bubble cap

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Out of the following gas-liquid contacting devices, for a given set of operating conditions, gas pressure drop is the least in __________ tower.

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