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What is difference between calcination and …

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What is difference between calcination and roasting

Posted by Preeti Awate 6 years, 2 months ago

CBSE > Class 10 > Science

3 answers

Narendra Nath 6 years, 2 months ago

Roasting:- It is a process in which metal sulphide ore are strongly heated below its melting point in the presence of oxygen is known as roasting. Ex.ZnS,HgS,Cu2S. Calcination:- It is a process in which ores are strongly heated below its melting point in the absence of oxygen is known as calcination. Ex.ZnCO3,Cu2O.

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Rhythm Kumar Grover 6 years, 2 months ago

Calcination is the process of heating metal carbonates in the absence of excess of air. Roasting is a process in which metal sulphides are heated in the presence of excess of air.

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Nanda Kanthi 6 years, 2 months ago

In Calcination metal is heated in excess og air And in roasting metal is heayted in presence air(oxygen)

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CBSE > Class 10 > Science