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Mass Transfer

Mass Transfer
Dry bulb temperature of the gas is __________ the wet bulb temperature.

Equal to
More than
None of these
Less than

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Mass Transfer
What is the reflux ratio at total reflux?

Infinity
Unity
Zero
Data insufficient

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Mass Transfer
__________ diffusion is used for separating the isotopes of methane.

Force
Pressure
Concentration
Thermal

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Mass Transfer
H₂S present in naphtha reformed gas is removed by absorbing with

HCl
Vacuum gas oil
K₂CO₃
Ethanolamine

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Mass Transfer
The cooling effect in a cooling tower can be speeded up by

Increasing the air velocity and area of exposed wet surface
Reducing the barometric pressure
Reducing the humidity of the air
All of the listed here

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Mass Transfer
To increase the absorption factor, (where, G = gas flow rate, S = solvent flow rate)

Increase 'S' and decrease 'G'
Decrease both 'G' and 'S'
Increase both 'G' and 'S'
Increase 'G' and decrease 'S'

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