Question

List - I List -II

A) $FeC{O}_3$ I) Calamine

B) 2$F{e}_2{O}_3.3H_{2}O$ ii) Chalcocite

C) $C{u}_{2}S$ iii) Limonite

D) $ZnC{O}_3$ iv) Siderite

Correct match is:

• A. A-iv, B-ii, C-iii, D-iv
• B. A-ii, B-iv, C-i, D-iii
• C. A-iv, B-iii, C-ii, D-i
• D. A-iii, B-i, C-ii, D-iv

Answer 1

The correct option is C A-iv, B-iii, C-ii, D-i

Siderite is a valuable iron ore mineral composed of iron carbonate (FeCO${}_3$). It is easily altered to iron oxides. It is also called as chalybite.

Limonite is an iron ore made up of a mixture of hydrated iron oxide minerals (2Fe${}_2$O${}_3$.3H${}_2$O) in different composition. Hence, it is not a true mineral.

Chalcocite is a valuable copper ore mineral composed of copper sulfide (Cu${}_2$S). It is made from alternation of other ore mineral bornite. Calamine is a zine ore mineral composed of zinc carbonate (ZnCO${}_3$). It is also called as smithsonite.

Thus, the correct answer is option C.