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Mass Transfer

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

HCl
Ethanolamine
Vacuum gas oil
K₂CO₃

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Mass Transfer
The cooling effect in a cooling tower can not be increased by

None of these
Reducing the humidity of entering air
Increasing the air velocity over the wet surfaces
Lowering the barometric pressure

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Mass Transfer
Which of the following decreases during evaporative cooling process with recirculated water supply?

Relative humidity
Wet bulb temperature
None of these
Partial pressure of vapour

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Mass Transfer
Which of the following plays an important role in problems of simultaneous heat and mass transfer?

Prandtl number
Sherwood number
Lewis number
Schmidt number

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Mass Transfer
Leaching of coarse solid lumps is also termed as

Percolation
Agitation and settling
Decoction
Dissolution

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Mass Transfer
During constant rate period, the rate of drying decreases with the

Both A & B
Neither A nor B
Increase in air humidity
Decrease in air temperature

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