Consider the statements for the metallurgical processes and select the correct statements:
(A) Malachite is an ore of copper
(B) Bauxite is an ore of aluminium
(C) Calamine is an ore of Zinc
(D) Haematite is an ore of iron
(E) Siderite is an ore of Zinc
Choose the correct statement from the options given below
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → A, B, C and D only
(A) Malachite is an ore of copper — Correct. Malachite is \( \ce{CuCO3} \).\( \ce{Cu(OH)2} \).
(B) Bauxite is an ore of aluminium — Correct. Bauxite is AlOx(OH)3−2x.
(C) Calamine is an ore of Zinc — Correct. Calamine is \( \ce{ZnCO3} \).
(D) Haematite is an ore of iron — Correct. Haematite is \( \ce{Fe2O3} \).
(E) Siderite is an ore of Zinc — Incorrect. Siderite is \( \ce{FeCO3} \), an ore of iron. The carbonate ore of zinc is calamine.
Note: This question is from the pre-rationalised NCERT book (2022-23). The topic is not there in the latest NCERT book (2026-27), and it is also out of the CUET 2026 syllabus.
NCERT (Pre-rationalised edition, 2022-23):
Occurrence of Metals – …
