Assertion : `Al_(2)O_(3)` is converted into Al by reduction with carbon at high temp.
Reason : Carbon has greater affinity for oxygen than aluminium.

Options

A. If both assetion and reason are CORRECT, and reason is the CORRECT explanation of the assertion
B. If both assertion and reason are CORRECT, but reason is NOT the CORRECT explanation of the assertion
C. If assertion is CORRECT but reason is INCORRECT
D. If assertion is INCORRECT but reason is CORRECT

Answer

To solve the question, we need to analyze the assertion and the reason provided:

**Assertion:** Al₂O₃ is converted into Al by reduction with carbon at high temperature.
**Reason:** Carbon has greater affinity for oxygen than aluminum.

### Step-by-Step Solution:

1. **Understanding the Assertion:**
- The assertion states that aluminum oxide (Al₂O₃) can be reduced to aluminum (Al) using carbon as a reducing agent at high temperatures. This is a common method used in metallurgy, particularly in the extraction of aluminum.

2. **Analyzing the Reduction Process:**
- In the reduction process, a reducing agent donates electrons to the metal oxide, resulting in the formation of the metal and the oxide of the reducing agent. In this case, carbon can reduce Al₂O₃ to aluminum, but it requires high temperatures to do so.

3. **Examining the Reason:**
- The reason states that carbon has a greater affinity for oxygen than aluminum. This implies that carbon would prefer to bond with oxygen rather than aluminum would. However, this statement is incorrect in the context of the thermite reaction, where aluminum is actually a stronger reducing agent than carbon.

4. **Understanding Affinity for Oxygen:**
- Aluminum has a very high affinity for oxygen, which means it readily reacts with oxygen to form Al₂O₃. In fact, aluminum is often used as a reducing agent because it can displace other metals from their oxides due to its strong affinity for oxygen.

5. **Conclusion:**
- The assertion is correct because Al₂O₃ can indeed be reduced to aluminum using carbon at high temperatures. However, the reason is incorrect because it misrepresents the relative affinities of carbon and aluminum for oxygen. Therefore, the correct answer is that the assertion is true, but the reason is false.

### Final Answer:
- **Assertion is correct, Reason is incorrect.**