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प्रश्न
Explain the following reaction with the balanced equation.
Ferric oxide is reacted with aluminium.
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उत्तर
Ferric oxide reacts with aluminium to form iron and aluminium oxide. This reaction is known as the thermit reaction.
\[\ce{\underset{\text{Ferric oxide}}{Fe2O_{3(s)}} + \underset{\text{Aluminium}}{2Al_{(s)}} ->[Ignited] \underset{\text{Iron}}{2Fe_{(l)}} + \underset{\text{Aluminium oxide}}{Al2O_{3(s)}}+Heat}\]
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संबंधित प्रश्न
Which of the following pairs will give displacement reactions?
In the extraction of aluminium: Why is it necessary to replace anodes time to time?
Name a reducing agent that may be used to obtain manganese from manganese dioxide.
Explain giving one example, how highly reactive metals (which are high up in the reactivity series) are extracted.
Name the chemical compound which is electrolysed in molten state to obtain aluminium metal. Which gas is evolved during this process?
The two metals which can be extracted just by heating their sulphides in air are:
(a) sodium and copper
(b) copper and aluminium
(c) potassium and zinc
(d) mercury and copper
The metal which is always present in an amalgam is:
(a) iron
(b) aluminium
(c) mercury
(d) magnesium
The articles made of silver metal become dark on prolonged exposure to air. This is due to the formation of a layer of its:
(a) oxide
(b) hydride
(c) sulphide
(d) carbonate
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Define the following term.
Gangue
Name the following:
The mixture of materials fed into a furnace to extract a metal.
State three objectives achieved during the roasting of ores.
What is the difference between calcination and roasting?
Iron is _______.
In Electrolytic reduction of alumina, Anode : _______ : : Cathode : Graphite lining
Explain the reactions of nonmetals with water with the help of examples.
The highly reactive metals like Sodium, Potassium, Magnesium, etc. are extracted by the ____________.
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Which of the following metals exist in their native state in nature?
- Cu
- Au
- Zn
- Ag
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 the reason why the above reaction is known as a thermite reaction.
