Question
Define the terms :
(1) Flux
(2) Slag

Answer

(1) Flux : A flux is a chemical substance which is added to the concentrated ore during smelting in order to remove the gangue or impurities by chemical reaction forming a fusible mass called slag.
(2) Slag : It is a waste product formed by combination of a flux and gangue (or impurities) during the extraction of metals by smelting process.
Iron is the fourth most abundant element in the earth’s crust.

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