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प्रश्न
The given reaction shows one of the processes to extract the metals like Iron and Manganese.
\[\ce{MnO2(s) + Al(s) -> Mn(l) + Al2O3(s) + Heat}\]
Identify the substance oxidised and reduced in the above reaction.
उत्तर
- Substance oxidised - Al(s)
- Substance reduced - MnO2(s)
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संबंधित प्रश्न
Define the Ore.
Metallic oxides of zinc, magnesium and copper were heated with the following metals.
| Metal | Zinc | Magnesium | Copper |
| Zinc oxide | – | – | – |
| Magnesium oxide | – | – | – |
| Copper oxide | – | – | – |
In which cases will you find displacement reactions taking place?
A zinc ore gave CO2 on treatment with a dilute acid. Identify the ore and write its chemical formula.
Name : The metal which is liquid at room temperature.
Heating an ore in a limited supply of air or in the absence of air at a temperature just below its melting point is known as ______.
Define calcination.
Find the odd one out and give its explanation.
Explain concept with example/explain with the help of a balanced equation.
Roasting
Explain in brief types of extraction of highly reactive metals according to their reactivity.
- Given below are the steps for extraction of copper from its ore. Write the reaction involved.
- Roasting of copper (I) sulphide
- Reduction of copper (I) oxide with copper (I) sulphide.
- Electrolytic refining
- Draw a neat and well labelled diagram for electrolytic refining of copper
