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Metals and Non-Metals — Science STD 10 — Question

CBSE BoardEnglish MediumSTD 10ScienceMetals and Non-Metals3 Marks
Question
What is calcination?
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Answer

Calcination is derived from a Latin word calcinare which translates as “to burn lime”. It is the process of converting an ore into its oxide by heating strongly, below its melting point either in a limited supply or in absence of air. This method is commonly used for converting carbonates and hydroxides to their respective oxides. During calcination, moisture and volatile impurities are also removed.
For example: Calcium carbonate is converted into calcium oxide by calcination.
 CaCO3 → CaO + CO2

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