Question

# Thermite is a mixture of iron oxide and (A) aluminium powder (B) zinc powder(C) iron turning(D) copper turnings

Hint: Thermite is the mixture of iron oxide and an alloy. It is found that Thermite reaction is an exothermic reaction between metal and metal oxide, where metal acts as a reducing agent and reduces the metal oxide.

- The thermite reaction is an exothermic reaction (that is when a large amount of heat energy is released), between the metal and metal oxide. For example, the reaction between the aluminium with the metal oxides, where aluminium acts as a reducing agent.
- It is found that the aluminium reduces the metal oxide most probably an iron (lll) oxide to produce ferrous and aluminium oxide, and during the reaction, a large amount of energy is released.
- We can see the reaction taking place between iron oxide and aluminium:
$F{{e}_{2}}{{O}_{3}}+2Al\to 2Fe+A{{l}_{2}}{{O}_{3}}+heat$
Hence, from above discussion it is clear that thermite is a mixture of iron oxide and aluminium powder.

Hence option D is correct.