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Mass Transfer

Mass Transfer
Which of the following is not a continuous drier?

Drum drier
Tray drier
Spray drier
Tunnel drier

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Mass Transfer
Weight of 1 m³ of humid air as compared to 1 m³ of dry air, under the same conditions, is

Less
More
Unpredictable
Same

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Mass Transfer
Which of the following is the most commonly used leaching solvent in vegetable oil industry?

Phenol
Furfurol
Liquid SO₂
Hexane

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Mass Transfer
The reason for preferring packed towers over plate towers in distillation practice is that the packed tower operation gives

Low pressure drop and low hold up
Low pressure drop and high hold up
High pressure drop and high hold up
High pressure drop and low hold up

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Mass Transfer
Schimdt number and Lewis number for pure air at atmospheric conditions are respectively

0 and ≈ 1
1 and 0
>1 and ≈ 1
< 1 and ≈ 1

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Mass Transfer
Positive deviation from Raoult's law means a mixture whose total pressure is

None of these
Less than the sum of the vapour pressure of the components
Less than that computed for ideality
Greater than that computed for ideality

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