Which of the following statements are true for the reaction of Fe_2O_3 with aluminium?<br>1. It is known as the 'thermite reaction'.<br>2. The heat evolved is used for welding purpose.<br>3. Aluminium metal acts as an oxidizing agent.<br>4. Molten Fe and Al are formed at the end of the reaction.<br>Select the <strong>CORRECT</strong> answer using the code given below.
- A. 1 and 2 ✓
- B. 1 and 3
- C. 2 and 4
- D. 1 and 4
Correct Answer: A. 1 and 2
Explanation
The thermite reaction is highly exothermic, producing enough heat for welding (e.g., railway tracks). However, aluminium acts as a reducing agent (it gets oxidized to Al_2O_3), and molten iron is formed, not molten aluminium.
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