1.

Among the following statements, the incorrect one isA. calamine and siderite are carbonatesB. argentite and cuprite are oxidesC. zinc blende and iron pyrites are sulphidesD. malachite and azurite are ores of copper

Answer» Correct Answer - B
(a) Calamine is `ZnCO_(3)`, and siderite is `FeCO_(3)`.
(b) Argentite is `Ag_(2)S` while cuprite is `Cu_(2)O`.
(c ) Zinc blende is `ZnS` and iron pyrites is `FeS_(2)`
(d) Malachite is `CuCO_(3) Cu(OH)_(2)` and azurite is `2CuCO_(3) Cu(OH)_(2)`.


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