Question

what is thermite reaction how it is used to join the railway track or crack machine parts

Answer 1

Thermite reaction is an exothermic reaction between iron oxide and aluminium which produces a large amount of heat and can even melt iron .The molten iron is placed between cracks and can be used to weld the tracks together.

Answer 2

Thermite reaction takes place in the presence of heat ( thermal condition) which helps in forming fused metals (metals in molten form) . This fused metals helps in join railway tracks or joining other broken metals .