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What is the role of limestone (CaCo3) in...

What is the role of limestone `(CaCo_3) in the extraction of iron?

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Names of some minerals are given below. .i) Haematite ii) bauxite iii) Dolomite a. Identify the mineral of Iron (Fe) b. Name the reducing agent mainly used in the extraction of iron from its ore. c. What is the role of powdered lime stone in the extraction process of iron?

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Assertion: If pure haematite is used as an ore for iron extraction, there is no need of roasting Reason: In the extraction of iron, final product in roasting is Fe_2O_3

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A N EXCEL PUBLICATION-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS-QUESTION BANK
  1. Which of the following is the ore of zinc?

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  2. There are servral methods for refining metals. Explain a method for re...

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  3. Metals are extracted from their ores. Among the following which metal ...

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  4. Carbonate ores are usually subjected to calcination, while sulphide or...

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  5. Leaching is a process of concentration of ores. Explain the leaching o...

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  6. Which of the following is not an Ore of Iron? Haematite,Magnetite,Mala...

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  7. Explain froth floatation process for the concentration of Ore.

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  8. During metallurgy, the metal extracted may still contain impurities. D...

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  9. Name two metals that are refined by distillation.

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  10. How would you convert crude germanium into ultrapure germanium? Explai...

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  11. What is the role of limestone (CaCo3) in the extraction of iron?

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  12. Alumina is mixed with cryolite and subjected to electrolysis to extrac...

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  13. What is pig iron?

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  14. What is hydrometallurgy?

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  15. Explain the method of preparation of copper by hydrometallurgy.

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  16. Explain the method of refining copper.

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  17. Copper is a useful metal and is generally extracted from copper pyrite...

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  18. How is blister copper obtained from copper matte?

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  19. Why is blister coper called so?

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  20. Give any two uses of copper.

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