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 2
Therefore, the statements that are true for the reaction of \( \text{Fe}_2\text{O}_3 \) with aluminium are statements 1 and 2.
Electrolysis as a source of extraction of metals are only successful when ________________.
Froth floatation process is based on-
The metal refined by Van Arkel method is