In which aluminium is melted to use at iron railings

Thermite is a pyrotechnic composition of metal powder, which serves as fuel, and metal oxide. When ignited by heat, thermite undergoes an exothermic reaction.
Feo..??
Thermit reaction caused by heating this phenomena called Thermit reaction
When iron is produced from feo with the help of aluminium dust it produces molten form of fe and high heat and energy released
The reaction in which energy in needed.

The reaction in which more reactive metal act as a reducing agent and the reaction is highly exothermic hence called thermite reaction??

The process of reduction of metal oxide by using aluminium powder as a reducing agent is know as thermite reaction
Reduction by aluminum powder

Well it should be thermite reaction…A thermite reaction is basically iron oxide reactng with aluminium to produce molten iron

THOSE REACTION IN WHICH LARGE AMOUNT OF HEAT IS PRODUCED.