MetallurgyHard

Question

The incorrect statement is :

Options

A.Calamine and Siderite are carbonates
B.Argentite and cuprites are oxides
C.Zn blende and iron pyrites are sulphides
D.Malachite and azurite are ores of Cu

Solution

Argentite (Ag2S) is a sulphide while cuprite (ruby copper) is an oxide Cu2O).
Calamine -ZnCO3, Siderite - FeCO3,
Zn-blende-ZnS. Iron pyrites FeSh2, Malachite-CuCO3. Cu(OH)2, Azurite-2CuCO. Cu(OH2)

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