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Class 12 Chemistry Practice Test: Extraction of Crude Metal from Concentrated Ore
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Class 12 Chemistry Practice Test: Extraction of Crude Metal from Concentrated Ore
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10 Questions

1. A metal found in a free state is called nugget.
2. Which of the following statements is wrong?
3. Which of the following metals is not extracted by electrolysis?
4. Copper is extracted from low grade copper ores.
5. How is ore-dressing of iron done?
6. When is the ore subjected to leach?
7. What is the type of metallurgy in which the ore is leached and the metal is collected by using electrolysis?
8. What is the main reaction occurring in the blast furnace during extraction of iron from haematite?
9. Roasting results in the formation of oxides. But why are oxide ores are subjected to roasting?
10. Which of the following ores are concentrated by froth flotation?

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