Which reaction is appreciable for its role to join railings of railway tracks ?
Distance between two places is 200 km. alpha a of steel is 12xx10^(-6)//""^(@)C . Total space that must be left between steel rails to allow for a change of temperature from 36^(@)F to 117^(@)F is
Assertion (A) : The reaction 2Al + Fe_2O_3 rarr Al_2O_3 + 2Fe + heat is to join railings of railway tracks . Assertion (R) : Molten iron will be produced in a thermite process.
The alloy used to build railway tracks
___________reaction is used in joining railings of railway tracks.
The alloy of iron used on making railway tracks is
VGS PUBLICATION-BRILLIANT-ACIDS,BASES AND SALTS-7 . Carbon and its Compounds
