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What are ores? Name one sulphide ore....

What are ores? Name one sulphide ore.

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Name chief ore of iron.

R G PUBLICATION-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS-EXERCISE
  1. complete the following reaction Al2O3+C rarr

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  2. Which metal foils are used for wrapping chocolates?

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  3. What are ores? Name one sulphide ore.

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  4. Explain the role of Cryolite in the electrolytic reducion of alumina.

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  5. How does the FeO impurity present in sulphide ore of copper is removed...

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  6. Name one important ore of aluminium. Give its chemical composition.

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  7. Write down the reaction taking place in different zones in the blast f...

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  8. Name the method used for the refining of Nickel.

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  9. Differentiate between 'minerals' and 'ores'.

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  10. Distinguish between calcination and roasting.

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  11. Name the main ore of iron.

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  12. How is cast iron made from pig iron?

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  13. Name the method used for the refining of Nickel.

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  14. How copper is extracted from low grade ore?

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  15. The process of removing matrix by fusing with flux is known as-

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  16. Iron ores are separated from its impurities by-

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  17. The reason for using 'depressants' in Froth Flotation Method is-

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  18. One of the impurities present in bauxite is.

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  19. Which of the folloiwng is not concentrated by froth floatation process...

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  20. Sodium tetracyano zincate(II) is produced as bi product during the ext...

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