1. Name the most abundant metal in earth's crust.
2. What is the name given to the minerals from which metals can be extracted profitably and conveniently?
3. What are earthly impurities present in ores known as?
4. What type of ores is roasted?
5. Give an example of a basic flux.
6. Name the principal ore of aluminium.
7. Name a substance that is used as a depressant in froth flotation process.
8. What is the name given to carbon reduction process for extracting the metal?
9. Which reducing agent is employed to get copper from leached low grade copper ore?
10. Which iron ore is used in blast furnace?
11. In which form of iron, 3 % carbon is present?
12. What is the amount of carbon content present in pig iron?
13. Name the purest form of commercial iron.
14. Which form of iron is produced in blast furnace?
15. Name a semiconductor that can be obtained by zone refining process.
16. Name a metal that can be purified by Mond's process.
17. Name the method of refining that is based on principle of adsorption.
18. Name a metal that acts as a reducing agent in extraction of silver.
19. Name the flux used during extraction of iron.
20. Which method is employed for conversion of carbonate ores into metal oxide?
21. Which technique is employed for conversion of sulphide ores into metal oxide?
22. Can aluminium be reduced by using carbon as a'reducing agent?
23. Which is the most abundant and cheapest reducing agent used in extraction of metals?
24. Name a common element present in anode nmud in electrolytic refining of copper.
25. Name the substance used as a collector in froth flotation process.
2. What is the name given to the minerals from which metals can be extracted profitably and conveniently?
3. What are earthly impurities present in ores known as?
4. What type of ores is roasted?
5. Give an example of a basic flux.
6. Name the principal ore of aluminium.
7. Name a substance that is used as a depressant in froth flotation process.
8. What is the name given to carbon reduction process for extracting the metal?
9. Which reducing agent is employed to get copper from leached low grade copper ore?
10. Which iron ore is used in blast furnace?
11. In which form of iron, 3 % carbon is present?
12. What is the amount of carbon content present in pig iron?
13. Name the purest form of commercial iron.
14. Which form of iron is produced in blast furnace?
15. Name a semiconductor that can be obtained by zone refining process.
16. Name a metal that can be purified by Mond's process.
17. Name the method of refining that is based on principle of adsorption.
18. Name a metal that acts as a reducing agent in extraction of silver.
19. Name the flux used during extraction of iron.
20. Which method is employed for conversion of carbonate ores into metal oxide?
21. Which technique is employed for conversion of sulphide ores into metal oxide?
22. Can aluminium be reduced by using carbon as a'reducing agent?
23. Which is the most abundant and cheapest reducing agent used in extraction of metals?
24. Name a common element present in anode nmud in electrolytic refining of copper.
25. Name the substance used as a collector in froth flotation process.
Answer:
1. Al 2. Ores 3. Gangue 4. Sulphide Ores 5. Lime 6. Bauxite 7. NaCN
8. Smelting 9. Scrap Iron / Hydrogen 10. Haematite 11. Cast Iron 12. 4%
13. Wrought Iron 14. Pig Iron 15. Germanium 16. Nickel 17. Chromatography
18. Zn 19. Lime Stone 20. Calcination 21. Roasting 22. No 23. Coke
24. Pt 25. Pine Oil
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