Mass Transfer
Which of the following employs an accessory known as 'drift eliminator' ?

Rotating disc contactor
Mechanical draft cooling tower
Rotary dryer
Multiple effect evaporator

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Mass Transfer
The term "approach" in a cooling tower refers to the difference in the temperature of the

Cold water leaving the tower and the wet bulb temperature of the surrounding air
Hot water entering the tower and the wet bulb temperature of the surrounding air
Hot water entering and the cooled water leaving the cooling tower
None of these

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