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Why should the metal sulphides and carbo...

Why should the metal sulphides and carbonated ores be converted to metal oxides in the process of extraction of the metal from them?

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It is easier to convert oxides to metals by reduction.
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Give Reason: a. Prior to reduction of the metal, sulphides and metal carbonates must be converted into metal oxides. b. for extracting some metals, displacement reactions are used instead of carbon to obtain metals from their oxides.

The process of extracting the metal from its ore is called :

Smelting is the process of reduction of metal oxide by :

Give reason : Carbonate and Sulphide ores are usually converted into oxides during the process of extraction.

Give reasons a. Platinum, gold and silver are used to make jewellery. b. Carbonate and sulphide ores are usually converted into oxides during the process of extraction. c. School bells are made up of metals.

The order of stability of metal oxides is

ZEN PUBLICATION-METALS AND NON METALS-ZEN ADDITIONAL QUESTIONS SECTION (VERY SHORT ANSWER [VSA] TYPE QUESTIONS)
  1. What is the reduction process used for sodium chloride?

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  2. In electrolytic refining of an impure coper metal, which substances ar...

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  3. What is galvanization?

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  4. Iron objects acquires redish brown coating when left exposed to moist ...

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  5. Why corrosion of iron is a serious problem?

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  6. Name the colour of coating formed on silver and copper articles expose...

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  7. Hydrogen is not a metal but it has been assigned a place in the metal ...

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  8. Why should the metal sulphides and carbonated ores be converted to met...

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  9. Name a non-metal which is lustrous and a metal which is non-lustrous.

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  10. A non-metal X exists in two different forms Y and Z. Y is the hardest ...

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  11. Why does calcium float on water?

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  12. Which gas is usually liberated when an acid reacts with a metal ? Illu...

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  13. Name the metal which reacts with a very dilute HNO(3) to evolve hydrog...

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  14. Copper when exposed to air for a long time acquire a green coat . Why ...

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  15. Name of solvent in which electrovalent compounds are soluble and a sol...

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  16. Show the formation of MgCl(2) by the transfer of electrons in the two ...

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  17. What is the valency of silicon?

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  18. What is roasting in metallurgy?

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  20. Write the balanced chemical equation for the reaction taking place whe...

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