Chemical Process
The only commercial Fischer-Tropsch plant for producing liquid hydrocarbon fuel from coal is located at

Trombay (India)
Los-Angles (U.S.A.)
SASOL (in South Africa)
Redcar (U.K.)

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Chemical Process
Use of hydrated lime in water treatment

Is to adjust the pH value
All of these
Before filtration, reduces the bacterial load on filters
After filtration, combats the corrosive-ness of water due to the presence of O₂ & CO₂

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