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Extraction of metal from concentrated ore - class-XII
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Which of the following sulphides when heated strongly in air gives the corresponding metal without undergoing separate reduction of oxide?
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A
$FeS$
💡 Explanation:
$2Cu _2S+3O _2\longrightarrow 2Cu _2O+2SO _2$
$2ZnS+3O _2\longrightarrow 2ZnO+2SO _2$
$2PbS+3O _2\longrightarrow 2PbO+2SO _2$
$2HgS+3O _2\longrightarrow 2HgO+2SO _2$
$FeS+O _2\longrightarrow Fe+SO _2$
$FeS$ when heated directly in air gives $Fe$.