In extraction of metal how many of the following ores involves calcination process.
(i) Dolomite (ii) Malachite (iii) Calcite (iv) Copperpyrites (vi) Cryolite (vii) Siderite (viii) Iron pyrite (ix) Argentite.

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Solution

Calcination Process:
The process of converting an ore into its oxidise by heating strongly below its melting point in limited amount of air is known as calcination process.
The volatile impurities as well as organic matter and moisture are removed during calcination.
The following ores involve calcination process,
$(i) D o l o m i t e, (i i i) C a l c i t e, (v i) C r y o l i t e, (i x) A r g e n t i t e .$

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In extraction of metal how many of the following ores involves calcination process.(i) Dolomite (ii) Malachite (iii) Calcite (iv) Copperpyrites (vi) Cryolite (vii) Siderite (viii) Iron pyrite (ix) Argentite.

In extraction of metal how many of the following ores involves calcination process.
(i) Dolomite (ii) Malachite (iii) Calcite (iv) Copperpyrites (vi) Cryolite (vii) Siderite (viii) Iron pyrite (ix) Argentite.