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CBSE Class 10 Science Question 5 of 46

Solved 2023 Question Paper CBSE Class 10 Science — Question 5

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Question 5

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 :

  1. Fe and Fe2O3
  2. Al and Al2O3
  3. Fe and Fe3O4
  4. Al and Al3O4
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