Question

The metal that is not extracted from its sulfide ore is

• A. Aluminium
• B. Iron
• C. Lead
• D. Zinc

Answer 1

The Correct Option is A

To solve this question, we need to understand the extraction processes of metals and identify which metal among the options is not extracted from its sulfide ore.

1. Aluminium: Aluminium is typically extracted from bauxite ore, which contains aluminium oxide \((\text{Al}_2\text{O}_3)\). The extraction process is known as the Bayer Process followed by the Hall-Héroult Process. Aluminium is not extracted from any sulfide ore, hence making it the correct answer.
2. Iron: Iron is commonly extracted from iron ores such as hematite \((\text{Fe}_2\text{O}_3)\) and magnetite \((\text{Fe}_3\text{O}_4)\). Although these are oxide ores, iron can also be extracted from sulfide ores like pyrite \((\text{FeS}_2)\). Therefore, iron can be extracted from sulfide ores.
3. Lead: The main ore of lead is galena \((\text{PbS})\), a sulfide ore. Lead is extracted from this sulfide ore through processes involving roasting and reduction. Thus, lead is extracted from its sulfide ore.
4. Zinc: Zinc is primarily extracted from zinc sulfide ore, known as sphalerite or zinc blende \((\text{ZnS})\). The extraction process involves roasting the ore to convert it into zinc oxide followed by reduction. Zinc is thus extracted from its sulfide ore.

In conclusion, the metal that is not extracted from its sulfide ore is Aluminium. The correct answer provided aligns with our analysis.