Question

The chemical used to join the railway tracks or cracked machine parys along with aluminium is...? (A) Fe2O3 (B) MnO2 (C) ZnCO3 (D) Cu2O​

Answer 1

Fe2O3 is used to join railway tracks or cracked machine parts along with aluminium

• the reaction is

Fe2O3+2Al----->Al2O3 +2Fe

Answer 2

Hey dooo‍♀️‍♀️‍♀️

(A) - Fe2O3 + Al

AND ALSO BY THE PROCESS OF WELDING .

● WELDING IS AN EXOTHERMIC REACTION IN WHICH A LARGE AMOUNT OF HEAT EVOLVED .

AND THE REACTION TAKES PLACE AS FOLLOWS➡️

{ Fe2O3 + 2Al ----> 2Fe + Al2O3 }

HERE , MOLTEN IRON IS FORMED WHICH IS POURED BETWEEN THE BROKEN IRON PIECES TO WELD THEM .

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