Mass Transfer
Which of the following increases during evaporative cooling process with recirculated water supply?

Wet bulb temperature
Partial pressure of vapour
Relative humidity
Both B and C

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

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

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