Which of the following reactions forms the basis of goldschmidt aluminothermite process ?

Options

A. `2Al+N_(2) to 2AlN`
B. `2Al+3Cl_(2) to 2AlCl_(3)`
C. `2Al+6HCl to 2AlCl_(3) +3H_(2)`
D. `2Al+Fe_(2)O_(3) to Al_(2)O_(3)+2Fe`

Answer

To determine which reaction forms the basis of the Goldschmidt aluminothermite process, we need to analyze the given options and identify the correct one.

### Step-by-Step Solution:

1. **Understanding the Goldschmidt Aluminothermite Process**:
The Goldschmidt aluminothermite process is a method used to produce metals from their oxides using aluminum as a reducing agent. The general reaction can be represented as:
\[ \text{Metal Oxide} + \text{Aluminium} \rightarrow \text{Metal} + \text{Aluminium Oxide} \]

2. **Analyzing the Options**:
- **Option 1**: Aluminium + Nitrogen → Aluminium Nitrate
- **Option 2**: Aluminium + Chlorine → Aluminium Chloride
- **Option 3**: Aluminium + HCl → Aluminium Chloride + Hydrogen
- **Option 4**: Aluminium + Iron Oxide → Aluminium Oxide + Iron

3. **Identifying the Correct Reaction**:
The only reaction that fits the description of the aluminothermite process is **Option 4**:
\[ \text{Aluminium} + \text{Iron Oxide} \rightarrow \text{Aluminium Oxide} + \text{Iron} \]
In this reaction, aluminum acts as a reducing agent, reducing iron oxide to iron while itself being oxidized to aluminum oxide.

4. **Conclusion**:
Therefore, the correct answer is **Option 4**: Aluminium + Iron Oxide gives Aluminium Oxide + Iron.