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Mass Transfer

Mass Transfer
Dry bulb temperature of unsaturated air is more than its __________ temperature.

Dew point
Wet bulb
Neither A nor B
Both A & B

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Mass Transfer
Air at a particular humidity is heated in a furnace. The new dew point

Decreases
Depends on the extent of heating
Remain unchanged
Increases

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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
Same
Unpredictable

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Mass Transfer
Which of the following is not a continuous leaching equipment?

Kennedy extractor
Hydrocyclones
Bollman extractor
Pachuka tank

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

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

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Mass Transfer
The value of Lewis number (Le = Sc/Pr) for air-water vapour system is around

0.24
600
1
3.97

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