Minerals from which metals can be extracted economically and
easily are called ores.The extraction of metals from
theirs ores involves the following processes.
(i)Concentration.
(ii)Calcination | roasting | leaching .
(iii)Reduction.
It is carried out be one of the following methods.
Which of the following reactions reactions does not occur in
Bessemer converter in the extraction of copper from chalcopyrites ?

Options

A. `2Cu FeS_2+4O_2toCu_2S+2FeO+3SO_2`
B. `FeO+SiO_2toFeSiO_3`
C. `2FeS+3O_2to2FeO+2SO_2`
D. `Cu_2S+2Cu_2Oto6Cu+SO_2`

Explanation

To solve the question regarding the reactions that occur in the Bessemer converter during the extraction of copper from chalcopyrites, we will follow these steps:

### Step-by-Step Solution:

1. **Understand the Context**:
- The question is about the extraction of copper from chalcopyrites (CuFeS2) using the Bessemer converter.
- The extraction process involves several reactions, and we need to identify which reaction does not occur in the Bessemer converter.

2. **Identify the Key Reactions in the Bessemer Converter**:
- The Bessemer converter is used to convert copper matte (Cu2S and FeS) into blister copper.
- The main reactions that occur in the Bessemer converter include:
- **Reaction 1**: \( 2 \text{FeS} + 3 \text{O}_2 \rightarrow 2 \text{FeO} + 2 \text{SO}_2 \)
- **Reaction 2**: \( \text{FeO} + \text{SiO}_2 \rightarrow \text{Slag} \)
- **Reaction 3**: \( 2 \text{Cu}_2\text{S} + 3 \text{O}_2 \rightarrow 2 \text{Cu}_2\text{O} + 2 \text{SO}_2 \)
- **Reaction 4**: \( 2 \text{Cu}_2\text{O} + \text{Cu}_2\text{S} \rightarrow 6 \text{Cu} + \text{SO}_2 \)

3. **Analyze the Given Reactions**:
- The question provides a reaction: \( \text{CuFeS}_2 + 4 \text{O}_2 \).
- This reaction represents the direct oxidation of chalcopyrite (CuFeS2) to produce copper and sulfur dioxide, which is not a reaction that occurs in the Bessemer converter.

4. **Conclusion**:
- Since the reaction \( \text{CuFeS}_2 + 4 \text{O}_2 \) does not occur in the Bessemer converter, it is the correct answer to the question.
- Therefore, the answer is **Option 1**.

### Final Answer:
The reaction that does not occur in the Bessemer converter in the extraction of copper from chalcopyrites is:
**CuFeS2 + 4O2**.