In polymer Buna-S: 'S' stands for :

Options

A. Sulphonation
B. Strength
C. Sulphur
D. Styrene

Answer

To solve the question regarding what 'S' stands for in the polymer Buna-S, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Polymer**: The question mentions the polymer Buna-S. It is important to understand what this polymer is made of.

2. **Understand the Components**: Buna-S is a copolymer made from two main monomers: butadiene and styrene.

3. **Identify the Monomers**:
- Butadiene has the chemical structure: CH2=CH-CH=CH2.
- Styrene has the chemical structure: CH2=CH-C6H5 (where C6H5 represents a phenyl group).

4. **Determine the Significance of 'S'**: In the name Buna-S, the 'S' specifically refers to one of the monomers used in the polymerization process.

5. **Conclude the Meaning of 'S'**: Since we have established that one of the monomers is styrene, we can conclude that the 'S' in Buna-S stands for Styrene.

### Final Answer:
In Buna-S, 'S' stands for Styrene.

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