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प्रश्न
What is thermit process? Where is this process used? Write a balanced chemical equation for the reaction involved.
उत्तर
In thermite reaction, iron oxide reacts with aluminium to produce molten iron. It is an exothermic process
The following reaction of iron oxide with aluminium as:
\[\ce{Fe2O3(s) + 2 Al (s)-> 2Fe (l) + Al2O3(s) + heat}\]
This is used to join railway tracks or cracked machine parts because the amount of heat evolved is so large that the metal is produced in the molten state.
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