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Mass Transfer

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

More
Same
Less
Unpredictable

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Mass Transfer
Which of the following quantities need not be fixed before starting the design of a co-current absorber?

None of the listed here
Flow rate of gas
Heat gain or loss
Flow rate of entering liquid

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Mass Transfer
The relative saturation of an unsaturated mixture of gas and vapor is independent of the

Composition of the mixture
Nature of the vapor
Temperature of the mixture
None of these

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Mass Transfer
Cox chart, which is useful in the design of distillation column particularly for petroleum hydrocarbons, is a plot of (where, P = vapor pressure, T = temperature)

Log P vs. log T
Log P vs . T
T vs . P
P vs . log T

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Mass Transfer
Which of the following operations does not involve leaching?

Dissolving gold from ores
Dissolving pharmaceutical products from bark or roots
Removing nicotine from its water solution by kerosene
Dissolving sugar from the cells of the beet

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Mass Transfer
Tea percolation employs

Absorption
Leaching
Liquid-liquid extraction
None of these

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