Give reason for the following :
Carbonate and sulphide ores are usually converted into oxides during the process of extraction of metals.

Academic Chemistry NCERT Class 10

Carbonate and sulphide ores are usually converted into oxides as it is easier to obtain metals from their oxides than from carbonates or sulphides.

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Updated on: 10-Oct-2022

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Give reasoni. Metals replace hydrogen from dilute acids, whereas non-metals do not.>ii. 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) Sodium, potassium and lithium are stored under oil.(c) Aluminium is a highly reactive metal, yet it is used to make utensils for cooking.(d) Carbonate and sulphide ores are usually converted into oxides during the process of extraction.
Give the steps involved in the extraction of metals of low and medium reactivity from their respective sulphide ores.
The extraction of metals from their ores and then refining them for use is known as ____________.
Why should the metal sulphides and carbonates be converted to metal oxides in the process of extraction of metal from them?
Carbon cannot reduce the oxides of sodium, magnesium and aluminium to their respective metals. Why? Where are these metals placed in the reactivity series? How are these metals obtained from their ores? Take an example to explain the process of extraction along with chemical equations.
How is the method of extraction of metals high up in the reactivity series different from that for metals in the middle? Why can the same process not be applied for them? Name the process used for the extraction of these metals.
Explain the steps for the extraction of copper from its sulphide ore. Write the balanced equations involved in the process.
(a) Write the steps involved in the extraction of pure metals in the middle of the activity series from their carbonate ores.(b) How is copper extracted from its sulphide ore? Explain the various steps supported by chemical equations. Draw labelled diagram for the electrolytic refining of copper.
(a) How is the method of extraction of metals high up in the reactivity series different from that for metals in the middle? Why cannot the same process be applied for them? Name and explain the process of extraction of sodium.(b) Draw a labelled diagram of electrolytic refining of copper.
Metallic oxides of zinc, magnesium and copper were heated with the following metals :
Although metals form basic oxides, which of the following metals form an amphoteric oxide?NacaAlCu
Give reason for the following :Silver, gold and platinum are used to make jewellery
What type of oxides are formed by metals?
What are amphoteric oxides? Give two examples of amphoteric oxides?

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