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प्रश्न
Name one metal which is extracted by reduction with aluminium.
उत्तर
Reduction with aluminium: Manganese is a reactive metal and it cannot be reduced by carbon. Thus, it is reduced by aluminium.
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संबंधित प्रश्न
Name the metal which is extracted from haematite ore.
Which gas is produced during the extraction of aluminium? At which electrode is this gas produced?
Name one ore of mercury. Which mercury compound is present in this ore? Write its chemical formula.
Which of the following reactants are used to carry out the thermite reaction required for welding the broken railway tracks?
(a) Al2O3 + Fe
(b) MnO2 + Al
(c) Fe2O3 + Al
(d) Cu2O + Fe
The metal which is always present in an amalgam is:
(a) iron
(b) aluminium
(c) mercury
(d) magnesium
Name the ore of mercury. With the help of balanced chemical equations, explain the process of extraction of mercury from its ore.
Name the following:
A compound which is added to lower the fusion temperature of the electrolytic bath in the extraction of aluminium.
Explain the following reaction with the balanced equation.
Zinc oxide is treated with carbon
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.
The given reaction shows one of the processes to extract the metals like Iron and Manganese.
\[\ce{MnO2(s) + Al(s) -> Mn(l) + Al2O3(s) + Heat}\]
Give a reason why Aluminium is preferably used in thermite reactions.
