Chemical Process
Economics of 'Solvay Process' depends upon the efficiency of

Carbonating tower
Ammoniation of salt solution
Ammonia recovery
Ammonia recovery and size of the plant

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Chemical Process
Pick out the false statement pertaining to water treatment.

Aeration of water is effective in CO₂ removal
Sodium sulphate or sodium carbonate do not cause hardness in water
Water with pH value less than 7, is acidic
The zeolite water softening process reduces the hardness of water by not more than 50%

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