Chemistry - Metallurgy Question with Solution | TestHub

Consider following ores

Bauxite ,   Cryolite ,   Haematite ,   Magnetite ,   Chalcopyrite ,   Copper glance ,   Malachite ,   Cuprite ,  Sphalerite ,   Calamine ,   zincite.

Than Calculate value of (A + B)

A ⇒ Total number of ore in which at least one metal present in +2 oxidation state.

B ⇒ Total number of sulphide ore in which two different types of metals are present.