Question

Match List I with List II and select the correct answer using the codes given below the lists.

A. Carnallite	1. Zinc
B. Calamine	2. Titanium
C. Limonite	3. Magnesium
D. Chalcopyrite	4. Copper

A. A- 1, B- 3, C- 2, D- 4
B. A- 1, B- 3, C- 4, D-2
C. A- 3, B- 1, C- 4, D-2
D. A- 3, B- 1, C- 2, D-4

Answer 1

Hint As we know that in the universe, elements are basic units of all types of matter present. These elements occur in the atmosphere, earth’s crust and sea. It is found that as 80% of the metals are known as metals, but all these are not in the pure form, there are some impurities present in these metals.

Complete answer:
Let’s discuss in brief about each of the given options:
- Carnallite – Carnallite is a soft, white halide mineral and is found to contain magnesium. It is represented as $KCl.MgC{{l}_{2}}.6{{H}_{2}}O$
- Calamine – Calamine is found to contain zinc. It is represented as $ZnC{{O}_{3}}$
- Limonite - Limonite is found to contain titanium. It is one of the three main iron ores.
- Chalcopyrite - Chalcopyrite is found to contain copper. It is represented as $CuFe{{S}_{2}}$

- Hence, we can conclude that the correct option is (d), that is A- 3, B- 1, C- 2, D-4.

Note: We should note here that all ores are mineral but all minerals are not ores. Basically, ores are only those minerals from which we can extract the metals feasibly.