WBJEE 2015 Chemistry Solved Paper

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Question : 35 of 40

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Roasted copper pyrite on smelting with sand produces

FeSiO3 as fusible slag and Cu2S mattee'
CaSiO3 as infusible slag and Cu2O mattee'
Ca3(PO4)2 as fusible slag and Cu2S mattee'
Fe3(PO4)2 as infusible slag and Cu2S mattee'

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