Heating a concentrated sulphide ore strongly in excess of air is called ...................... .

Q.1 (A)(iii) Heating a concentrated sulphide ore strongly in excess of air is called ...................... .

A. calcination

B. roasting

C. electrolytic reduction

D. froth flotation

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Answer: B. roasting

Answer: (B) roasting

In roasting, the sulphide ore is heated strongly in plenty of air and converted into the metal oxide, e.g. \(\mathrm{2ZnS + 3O_2 \xrightarrow{\Delta} 2ZnO + 2SO_2}\). Calcination is heating a carbonate ore strongly in a limited supply of air.

Doubtly AI · 27 Oct 2026 AI-generated · not yet verified Report

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Heating a concentrated sulphide ore strongly in excess of air is called ...................... .

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