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During the metallurgical process of calcination:
Option: 1
Carbonate ores are changed into sulphides

Option: 2
Carbonate ores are changed into oxides

Option: 3
Oxide ores are changed into carbonates

Option: 4
Oxide ores are changed into sulphides

Answers (1)

best_answer

During calcination, carbonate ores are decomposed into oxides liberating carbon dioxide by heating strongly in limited air/absence of air.

$\mathrm{ZnCO}_3 \rightarrow \mathrm{ZnO}+\mathrm{CO}_2$

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