Match List I with List II
|
LIST I |
LIST II |
|
A. Carnallite |
I. Zinc |
|
B. Calamine |
II. Iron |
|
C. Siderite |
III. Magnesium |
|
D. Malachite |
IV. Copper |
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → A-III, B-I, C-II, D-IV
Each mineral is matched with the metal it is an ore or source of:
(A) Carnallite — This matches (III) Magnesium. Carnallite is the double salt KCl·MgCl2·6H2O, found in the deposits of dried-up seas.
(B) Calamine — This matches (I) Zinc. Calamine is zinc carbonate, \( \ce{ZnCO3} \).
(C) Siderite — This matches (II) Iron. Siderite is iron(II) carbonate, \( \ce{FeCO3} \).
(D) Malachite — This matches (IV) Copper. Malachite is basic copper carbonate, CuCO3·Cu(OH)2.
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):
Principal Ores of Some Important Metals (rows of Table 6.1)
| Metal | Ores | Composition |
|---|---|---|
| Iron | Siderite | FeCO3 |
| Copper | Malachite | CuCO3.Cu(OH)2 |
| Zinc | Calamine | ZnCO3 |
Occurrence – “… The deposits of dried up seas contain these compounds, e.g., sodium chloride and carnallite, KCl.MgCl2.6H2O.”