Question

• A. (a) Aluminium
• B. (b) Iron
• C. (c) Copper
• D. (d) Zinc

Answer 1

The correct option is B

(b) Iron

Minerals from which a metal can be profitably mined are called ores

Explanation of correct option :

(b) Iron:

• Haematite is the most important ore of iron.
• It is an iron oxide with a chemical composition Fe₂O_3.

Explanation of incorrect option:

(a) Aluminium: Bauxite (Al₂O₃.2H₂O) is the ore of aluminum.

(c) Copper: Copper pyrites (CuFeS₂), and Malachite [Cu₂CO₃(OH)₂] are the ores of the copper.

(d) Zinc: Zinc blende (ZnS) and calamine(ZnCO₃) are the ores of zinc.

Therefore, option (b) i.e. Iron is correct.