HARDMCQ SINGLEIChO (Chemistry Olympiad)Inorganic ChemistryMetallurgyAchiever Section

Which of the following pair of ores cannot be converted into corresponding metals by pyrometallurgy?

A.Ag₂S, ZnS✓ Correct

B.Cu₂S, HgS

C.MnO₂, SnO₂

D.None of these

Explanation

2 Ag S, ZnS Pyrometallurgy deals with heating of ores at the high temperature. 2 Ag S and ZnS in presence of high temperature give following compounds due to which is not converted into corresponding metals using pyrometallurgy. 2 2 2 2 4 4 O O Ag S Ag SO ZnS ZnSO → →

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