What chemical process is used for obtaining a metal from its oxide?

Academic Chemistry NCERT Class 10

Reduction is the process used for obtaining a metal from its oxide.

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Updated on: 10-Oct-2022

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(a) Name two metals which are found in free state in nature.(b) What chemical process is used for extracting a metal from its oxide ore? Name one metal which is extracted by this method. (c) Describe the extraction of zinc metal from its sulphide ore as well as its carbonate ore. Write equations of all the reactions involved.
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A black metal oxide XO2 is used as a catalyst in the preparation of oxygen gas from potassium chlorate. The oxide XO2 is also used in ordinary dry cells. The metal oxide XO2 cannot be reduced satisfactorily with carbon to form metal X.(a) Name the metal X. (b) Name the metal oxide XO2. (c) Which reducing agent can be used to reduce XO2 to obtain metal X?(d) Name another metal which can also be extracted by the reduction of its oxide with the above reducing agent.
(a) What is thermit process? Where is this process used? Write a balanced chemical equation for the reaction involved.(b) Where does the metal aluminium, used in the process, occurs in the reactivity series of metals?(c) Name the substances that are getting oxidised and reduced in the process.
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A metal X which is resistant to corrosion is produced by the electrolysis of its molten oxide whereas another metal Y which is also resistant to corrosion is produced by the reduction of its oxide with carbon. Metal X can be used in powder form in thermite welding whereas metal Y is used in making cathodes of ordinary dry cells.(a) Name the metals X and Y. (b) Which of the two metals is more reactive: X or Y? (c) Name one ore of metal X. Also write its chemical formula. (d) Name one ore of metal Y. Also write its chemical formula. (e) Name one alloy of metal X and one alloy of metal Y.
A metal A, which is used in thermite process, when heated with oxygen gives an oxide B, which is amphoteric in nature. Identify A and B. Write down the reactions of oxide B with HCl and NaOH.
A metal X is in the first group of the periodic table. What will be the formula of its oxide?
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(a) For the reduction of a metal oxide, suggest a reducing agent other than carbon.(b) Explain why, an aqueous solution of sodium chloride is not used for the electrolytic extraction of sodium metal.
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