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Mass Transfer

Mass Transfer
When the feed to a distillation column is a saturated liquid, slope of the feed line is

Zero
Infinity
None of these
Unity

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Mass Transfer
In case of an unsaturated mixture of gas and vapor, the percentage saturation is __________ its relative saturation.

Lower than
Higher than
Equal to
Either A or B, depends on the mixture composition

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Mass Transfer
Unsaturated air (with dry and wet bulb temperatures being 35 and 25°C respectively) is passed through water spray chamber maintained at 35°C. The air will be

Dehumidified
Both A & B
Humidified
Cooled

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Mass Transfer
The commonly used solvent in supercritical extraction is

Methyl ethyl ketone
Carbon dioxide
Water
Carbon tetrachloride

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Mass Transfer
For turbulent mass transfer in pipes, the Sherwood number depends on the Reynolds number as

Re
Re0.53
Re0.33
Re0.83

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Mass Transfer
Which of the following processes is followed by unsaturated air (with dry bulb temperature 12°C and relative humidity 47%) passing through water spray washer (temperature of water being constant at 40°C?

Both heating and humidification
Evaporative cooling
Heating only
Humidification only

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