Mass Transfer
The adiabatic saturation curve for a vapour-gas mixture is

Straight line
None of these
Slightly concave downward
Slightly concave upward

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Mass Transfer
Blowdown in a cooling tower

Increases the scale forming tendencies of water
All of these
Means discarding a small fraction of circulating water to prevent and limit the concentration of salt and impurities
Is undesirable

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