In a thermite reaction, a compound of iron reacts with a metal.
After completion of this reaction, a metal is obtained in the molten state. Identify the metal:

Options

A. Zinc
B. Aluminium
C. Iron
D. Magnesium

Explanation

To solve the question regarding the thermite reaction and identify the metal obtained in the molten state, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Thermite Reaction**:
The thermite reaction is a type of exothermic reaction where a metal oxide reacts with a more reactive metal, resulting in the formation of a metal and a metal oxide.

2. **Identify the Reactants**:
In the thermite reaction, iron(III) oxide (Fe2O3) is commonly used as the metal oxide. The more reactive metal that is used in this reaction is aluminum (Al).

3. **Write the Chemical Equation**:
The balanced chemical equation for the thermite reaction is:
\[ Fe_2O_3 + 2Al \rightarrow Al_2O_3 + 2Fe \]
Here, iron(III) oxide reacts with aluminum to produce aluminum oxide and iron.

4. **Analyze the Products**:
From the equation, we can see that the products of the reaction are aluminum oxide (Al2O3) and iron (Fe).

5. **Identify the State of the Metal**:
The reaction is highly exothermic, meaning it releases a significant amount of heat. This heat is sufficient to melt the iron produced, resulting in iron being obtained in a molten state.

6. **Conclusion**:
Therefore, the metal obtained in the molten state after the completion of the thermite reaction is iron (Fe).

### Final Answer:
The metal obtained in the molten state is **Iron (Fe)**.

---