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Metallurgy — Chemistry STD 10 — Question

ICSE BoardEnglish MediumSTD 10ChemistryMetallurgy3 Marks
Question
Define calcination. Give example and equation for calcination.
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Answer

Calcination is the process of heating the concentrated ore such as carbonate or hydrated oxide to a high temperature in the absence of air.
Example: Metal carbonates get decomposed to produce metal oxides.
$ZnCO _3 \longrightarrow ZnO + CO _2 $
$CaCO _3 \longrightarrow CaO + CO _2$

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