Which of the following statements are true for the reaction of Fe₂O₃ with aluminium?
- 1. It is known as the ‘thermite reaction’.
- 2. The heat evolved is used for welding purpose.
- 3. Aluminium metal acts as an oxidizing agent.
- 4. Molten Fe and Al are formed at the end of the reaction.
Select the correct answer using the code given below.
1 and 2
1 and 3
2 and 4
1 and 4
Answer is Wrong!
Answer is Right!
This question was previously asked in
UPSC CDS-1 – 2023
– Statement 2 is correct: The large amount of heat produced in the thermite reaction results in molten iron, which is used for welding broken railway tracks or cracked machine parts (thermite welding).
– Statement 3 is incorrect: Aluminium acts as a reducing agent because it removes oxygen from Fe₂O₃. Iron(III) oxide (Fe₂O₃) acts as the oxidizing agent.
– Statement 4 is incorrect: Molten iron (Fe) is formed at the end of the reaction. Aluminium is converted to aluminium oxide (Al₂O₃), not molten aluminium metal.