Mass Transfer
Which of these columns incurs the lowest pressure drop?

Pulse column
Bubble plate column
Packed column (with dumped packing)
Packed column (with stacked packing)

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Mass Transfer
A coalescer in a mixer-settler liquid-liquid extraction coloumn

Helps in increasing the settling rate of the bubbles
Helps in increasing the bubble size entering the settler
Comprises of thin bed of substances of extended surface having high porosity
All of these

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Mass Transfer
Relative volatility varies with the concentration of component for an ideal solution. The relative volatity of a binary mixture may be defined as the ratio of vapor pressure of component 'A' to that of component 'B', when

Only vapor phase follows Raoult's law
Vapor phase obeys Dalton's law and liquid phase obeys Raoult's law
Liquid phase obeys Dalton's law and vapor phase obeys Raoult's law
Only liquid phase obeys Dalton's law

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