Question

Which among the following monomers is used to prepare Teflon?

• A. \( \text{CH}_2 = \text{CH}-\text{CH}_3 \)
• B. \( \text{CF}_2 = \text{CF}_2 \)
• C. \( \text{CH}_2 = \text{CH} - \text{Cl} \)
• D. \( \text{CH}_3 - \text{CH} = \text{CH}_2 \)

Hint:

Teflon is made from the polymerization of tetrafluoroethylene (\( \text{C}_2\text{F}_4 \)), which has the structure \( \text{CF}_2 = \text{CF}_2 \).

Answer 1

The Correct Option is B

Step 1: Understanding Teflon.
Teflon is a polymer of tetrafluoroethylene (\( \text{C}_2\text{F}_4 \)). The monomer used in its preparation is \( \text{CF}_2 = \text{CF}_2 \).

Step 2: Analyzing the options.
(A) \( \text{CH}_2 = \text{CH}-\text{CH}_3 \): This is the monomer for propylene, not Teflon.
(B) \( \text{CF}_2 = \text{CF}_2 \): Correct — This is the monomer for Teflon.
(C) \( \text{CH}_2 = \text{CH} - \text{Cl} \): This is the monomer for vinyl chloride, not Teflon.
(D) \( \text{CH}_3 - \text{CH} = \text{CH}_2 \): This is the monomer for propene, not Teflon.

Step 3: Conclusion.
The correct answer is (B) \( \text{CF}_2 = \text{CF}_2 \), the monomer for Teflon.