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Mass Transfer

Mass Transfer
Leaching of coarse solid lumps is also termed as

Decoction
Agitation and settling
Percolation
Dissolution

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Mass Transfer
Unsaturated air (with dry bulb and wet bulb temperatures being 45°C and 25°C respectively) is passed through a water spray chamber maintained at 23°C. The air will be cooled and

Humidified with wet bulb temperature decreasing
None of these
Humidified at constant wet bulb temperature
Dehumidified

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

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

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Mass Transfer
Which of the following has the same dimension as mass diffusivity?

Both Momentum flux & Kinematic viscosity
Momentum flux
Kinematic viscosity
Thermal diffusivity

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Mass Transfer
In distillation columns, the number of bubble caps per tray primarily depends upon the

Feed composition
Allowable gas and liquid velocities
Allowable gas velocity
Allowable liquid velocity

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Mass Transfer
Which of the following is a suitable absorbent for removal of H₂S from natural gas?

Monoethanol amine (MEA)
Hot water
Vetrocoke solution
Dilute

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