Chemistry
The manufacture of iron from iron ore involves the process of

Electrolysis
Reduction
Oxidation
Fractional distillation

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Chemistry
The open "Sigrees" or coal stoves often require fanning to sustain burning because of

Accumulation of smoke and dust over the sigrees
Tendency of carbon dioxide to form a layer along with dust smoke
Interrupted release of moisture from the material
Lack of oxygen in the surroundings of sigrees

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