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प्रश्न
Which substance is usually used as flux when the ore contains the impurities of silica?
अति संक्षिप्त उत्तर
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उत्तर
The substance usually used as flux when the ore contains impurities of silica is lime (CaO). It combines with silica (SiO2) to form fusible calcium silicate (CaSiO3) slag, which is removed during smelting.
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