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प्रश्न
What is thermit process? Where is this process used? Write a balanced chemical equation for the reaction involved.
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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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