Mass Transfer
Which of the following mixtures does not form an azeotrope at atmosheric pressure?

None of these
Butyl acetate-water
Water-alcohol
Methyl alcohol-acetone

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Mass Transfer
Blowdown in a cooling tower

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

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Mass Transfer
In saturated gas, the

None of the listed here
Vapour is in equilibrium with the liquid at the room temperature
Vapour is in equilibrium with the liquid at the gas temperature
Partial pressure of vapour equals the vapour pressure of the liquid at room temperature

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