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Mass Transfer

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

Vacuum gas oil
K₂CO₃
Ethanolamine
HCl

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Mass Transfer
Molecular distillation is

Both B and C
Very low pressure distillation
For heat-sensitive materials
High temperature distillation

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Mass Transfer
The operating cost of a distillation column at minimum reflux ratio is

Zero
Infinite
Minimum
Maximum

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Mass Transfer
Out of the following gas-liquid contacting devices, for a given set of operating conditions, gas pressure drop is the least in __________ tower.

Bubble cap
Perforated tray
Packed
Wetted wall

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

Hot water
Vetrocoke solution
Dilute
Monoethanol amine (MEA)

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Mass Transfer
Equilibrium moisture of a solid is equal to the total moisture minus free moisture. Which of the following substances will have maxi-mum equilibrium moisture?

Rag paper
Inorganic solids
Bamboo
Anthracite coal

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