Why Ironoxide and Aluminum are used to join the Railway tracks. Give the balance Equation.
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Answer. When Aluminium is heated with Fe2O3 it is reduced to iron and a lot of heat is produced which melts the iron. The molten iron fills the space between the railway tracks and joins them. This reaction is called as Thermit reaction.
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IIt is called exothermic welding or thermite welding.
They mix together Iron oxide and fine aluminium powder and put it in a mould between 2 ends of railway rails.
The start the reaction with a high heat source, and a exothermic reactionstarts,
turning the alu into an oxide, the iron oxide reduces to pure iron, and the massive heats melt everything in place.
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