1. The Process of extraction used for sulphide ore is _____
2. _______ metal is extracted from Bauxite ore.
3. Which of the following is a Metal ?
4. Element which is not available in free state in nature is ______
5. Which process is used to extract metals that are less reactive than carbon?
6. Which of the following is carbonate ore _____
7. What is the process of separating metals from their ores based on the differences in melting points called ?
8. The only metal in liquid state _____
9. What is the primary reducing agent in the extraction of iron from its ore?
10. Which of the following metals is obtained by the thermite process?
11. Which of the following is not a step in the extraction of copper from its ore?
12. The most abundant metal in earths crust is _______
13. Generally the melting and boiling points metals are____
14. The process of heating ore in the presence of Oxygen is called ________
15. In the extraction of aluminium, which compound is electrolyzed in the Hall-Heroult process?
16. Bronze is an alloy of copper and _____
17. Which metal is commonly extracted from its ore using the cyanide process?
18. What is the process of converting an ore into its oxide by heating it in the absence of air called ?
19. What is the term for the process of removing impurities from metal ores by heating them in the presence of a flux?
20. Which metal is extracted from bauxite ore?
