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Mass Transfer

Mass Transfer
Leaching of coarse solid lumps is also termed as

Decoction
Agitation and settling
Dissolution
Percolation

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Mass Transfer
Sides of equilateral-triangular co-ordinates (on which ternary liquid system is plotted) represent

A binary mixture
A ternary mixture
Partially miscible ternary system
A pure component

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Mass Transfer
Humidification involves mass transfer between a pure liquid phase and a fixed gas, which is

Insoluble in the liquid
Non-ideal in nature
Soluble in the liquid
At a fixed temperature

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Mass Transfer
Absorption accompanied with chemical reaction is exemplified by the absorption of

All of these
Ammonia in water
SO₂ in alkaline solution
Benzol present in coke oven gas by wash oil

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Mass Transfer
Absorption factor method is used to calculate the number of ideal stages, when

Pressure drop in the column is very high
Operating line lies below the equilibrium line
Operating line lies above the equilibrium line
Both operating and equilibrium lines are parallel

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Mass Transfer
An alkaline solution is used to reduce the concentration of carbon dioxide in a stream from 10% to 0.1% by absorption with irreversible chemical reaction. The overall number of transfer units based on gas phase is

4.605
9.21
100
0.001

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