1 Answers
Option 3 : Only I and II
Option 3 is correct, i.e. Only I and II.
- Haematite and Monazite are the ores of iron and thorium respectively whereas, Pitchblende (also called Uraninite) is the ore of Uranium and not copper.
Extra facts:
| Element | Description |
| Aluminium |
Bauxite is an ore of Aluminium. It is the crystalline form of aluminium oxide. After Diamond, it is the hardest known natural substance. It's finer varieties are the gemstones, sapphire, and ruby. |
| Thorium | Monazite is the ore of thorium. |
|
Iron |
The main ore of iron as hematite, limonite, and siderite. Hematite is the most important iron ore. Iron ores are rocks and minerals from which metallic iron economically can be extracted. |
|
Copper |
The largest source of copper is from porphyry ore. The main copper sulfide minerals are chalcopyrite, chalcocite, covellite bornite, tetrahedrite, and enargite. |
|
Silver |
The most common silver ores are native silver and argentite. |