MCQOPTIONS
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| 1. |
Among the following statements, the incorrect one is [IIT 1997] |
| A. | Calamine and siderite are carbonates |
| B. | Argentite and cuprite are oxides |
| C. | Zinc blende and pyrites are sulphides |
| D. | Malachite and azurite are ores of copper |
| Answer» C. Zinc blende and pyrites are sulphides | |