Chauvin, Grubbs and Schrock won 2005 Nobel prize for the development of

Options

A. Dumas method
B. Kjeldahi's method
C. Metahesis method
D. Carius method

Answer

**Step-by-Step Solution:**

1. **Identify the Nobel Prize Winners and Year**: The question asks about the 2005 Nobel Prize winners in Chemistry, which were Yves Chauvin, Robert Grubbs, and Richard Schrock.

2. **Determine the Area of Contribution**: The question requires us to find out what these chemists were awarded the Nobel Prize for. The key area of their contribution is organic chemistry.

3. **Evaluate the Options**: The options provided are:
- Dumas method
- Kjeldahl method
- Metathesis method
- Carius method

4. **Analyze Each Option**:
- **Dumas Method**: This method is used for the determination of nitrogen in chemical substances and was proposed by Jean-Baptiste Dumas. This is not related to the work of Chauvin, Grubbs, and Schrock.
- **Kjeldahl Method**: This method is used for determining nitrogen content by converting it into ammonium sulfate. It was proposed by John Kjeldahl and is also unrelated to the Nobel Prize winners.
- **Metathesis Method**: This is a significant reaction in organic chemistry where two hydrocarbons exchange components to form new hydrocarbons. This method is directly linked to the work of Chauvin, Grubbs, and Schrock, which led to their Nobel Prize.
- **Carius Method**: This method is used for the quantitative determination of halogens in substances and was proposed by George Ludwig Carius. This is not related to the work of the Nobel laureates.

5. **Conclusion**: Based on the analysis, the correct answer is the **Metathesis method**, which is the development for which Chauvin, Grubbs, and Schrock were awarded the 2005 Nobel Prize in Chemistry.

**Final Answer**: Metathesis method

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