Question

Which of the following statements is incorrect?

• 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 1

Answer: (B)

$\left(A\right)$ Calamine $=ZnCO_{3}$ , Siderite $=FeCO_{3}$
$\left(B\right)$ Argentite $=Ag_{2}S$ and Cuprite $=Cu_{2}O$
$\left(C\right)$ Zinc blende $=ZnS$ , Pyrites $=FeS_{2}$
$\left(D\right)$ Malachite $=CuCO_{3}Cu\left(O H\right)_{2}$ , Azurite $=2CuCO_{3}Cu\left(O H\right)_{2}$