Science
A metal 'X' is used in thermite process. When X is burnt in air it gives an amphoteric oxide 'Y'. 'X' and 'Y' are respectively :
- Fe and Fe2O3
- Al and Al2O3
- Fe and Fe3O4
- Al and Al3O4
Metals & Non-Metals
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Answer
Al and Al2O3
Reason — Aluminium is used in thermite process. When aluminium is heated in oxygen it forms aluminium oxide which is amphoteric in nature .
4Al + 3O2 ⟶ 2Al2O3
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