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Among the following statements the incorrect one is

$ (a)\;\text{Calamine and siderite are carbonates} \\(b)\;\text{Argentite and cuprite are oxides } \\(c)\;\text{ Zinc blende and iron pyrites are sulphides } \\ (d)\;\text{(d) Malachite and azurite are ores of copper } $
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The correct statement is :Argentite and cuprite are oxides
Hence b is the correct answer.
answered Mar 18, 2014 by meena.p

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