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Mass Transfer

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

Ethanolamine
HCl
Vacuum gas oil
K₂CO₃

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Mass Transfer
Deairation (removal of O₂) of water is done by

Ion-exchange
Rectification
Absorption
Adsorption

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Mass Transfer
Pick out the system with minimum boiling azeotrope at 1 atm.

Hydrochloric acid-water
Ethyl alcohol-water
Benzene-toluene
All of these

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Mass Transfer
In case of physical adsorption, the difference between heat of adsorption and heat of normal condensation is

Called integral heat of adsorption
Equal to the heat of formation of surface compound
Zero
Equal to the heat of wetting

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Mass Transfer
Hypersorption refers to a __________ process.

Fixed bed absorption
Fixed bed adsorption
Moving bed adsorption
Moving bed absorption

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Mass Transfer
In the constant rate period of the rate of drying curve for batch drying,

Cracks develop on the surface of the solid
Rate of drying decreases abruptly
None of these
Surface evaporation of unbound moisture occurs

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