`n(CF_2 = CF_2) overset((NH_4)_2 SO_4)to X `, Here , X is

Options

A. PVC
B. PMMA
C. PAN
D. PTFE (Teflon)

Explanation

To solve the question, we need to analyze the reaction of \( n(CF_2=CF_2) \) in the presence of \( (NH_4)_2SO_4 \).

1. **Identify the Reactants**:
The reactant \( CF_2=CF_2 \) is known as tetrafluoroethylene (TFE). It is a colorless gas that is used in the production of various fluoropolymers.

2. **Understand the Reaction**:
The presence of \( (NH_4)_2SO_4 \) suggests that we are likely dealing with a polymerization reaction. Ammonium sulfate can act as a catalyst in certain reactions, promoting the polymerization of tetrafluoroethylene.

3. **Determine the Product**:
When tetrafluoroethylene undergoes polymerization, it forms polytetrafluoroethylene (PTFE), commonly known as Teflon. This is a high-performance plastic that is widely used for its non-stick properties.

4. **Write the Reaction**:
The reaction can be summarized as:
\[ n(CF_2=CF_2) \overset{(NH_4)_2SO_4}{\rightarrow} (C_2F_4)_n \]
where \( (C_2F_4)_n \) represents the polymer chain of polytetrafluoroethylene.

5. **Conclusion**:
Therefore, the product \( X \) formed from the reaction is polytetrafluoroethylene (PTFE), commonly known as Teflon.

### Final Answer:
**X is Polytetrafluoroethylene (PTFE) or Teflon.**