Question

A metal ‘X’ is used in the thermite process. When ‘X’ is heated with oxygen, it gives an oxide ‘Y’, which is amphoteric in nature. ‘X’ and ‘Y’ respectively are:

• A. Mn, MnO₂
• B. Al, Al₂O₃
• C. Fe, Fe₂O₃
• D. Mg, MgO

Answer 1

The Correct Option is B

Step 1: Identify the metal used in the thermite process
The thermite process is used to weld railway tracks and repair broken metal parts. It involves a highly exothermic reaction where a reactive metal like aluminium (Al) reduces the oxide of a less reactive metal (like iron oxide).

Step 2: Determine the oxide formed
When aluminium (X) reacts with oxygen, it forms aluminium oxide (Y):
4Al + 3O₂ → 2Al₂O₃

Step 3: Identify the nature of the oxide
Aluminium oxide (Al₂O₃) is amphoteric, meaning it can react with both acids and bases to form salts and water.

Step 4: Conclusion
- The metal ‘X’ is Aluminium (Al).
- The oxide ‘Y’ is Aluminium oxide (Al₂O₃).

Final Answer:
Al, Al₂O₃