A flux is used to remove . . . . . . . | vedclass

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(D) flux is a substance added to the ore during smelting to remove gangue (impurities). If the gangue is acidic (e.g.,$SiO_2$),a basic flux (e.g.,$CaO

Vedclass · Accepted Answer

Both acidic and basic impurities

Vedclass · Answer

(D) flux is a substance added to the ore during smelting to remove gangue (impurities). If the gangue is acidic (e.g.,$SiO_2$),a basic flux (e.g.,$CaO$) is added to form a fusible slag $(CaSiO_3)$. If the gangue is basic (e.g.,$FeO$),an acidic flux (e.g.,$SiO_2$) is added to form a fusible slag $(FeSiO_3)$. Therefore,a flux is used to remove both acidic and basic impurities depending on the nature of the gangue present in the ore.

$A$ flux is used to remove . . . . . . .

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