Question

Match the following polymers with their applications: \begin{center} \begin{tabular}{|c|c|} \hline List-I (Polymer) & List-II (Used in making)
\hline

• A. \( \text{[--CH}_2\text{--CF}_2\text{--]}_n \) (Polytetrafluoroethylene) & (II) Gaskets
• B. \( \text{[--CH}_2\text{--CH--]}_n \text{CN} \) (Polyacrylonitrile) & (IV) Commercial fibres
• C. \( \text{[--OCH}_2\text{CH}_2\text{O--]}_n \text{--C--} \text{--O--} \) (Epoxy resin) & (I) Safety helmets
• D. \( \text{[--NHCONHCH}_2\text{--]}_n \) (Polyurethane) & (III) Laminated sheets \hline \end{tabular} \end{center}

Hint:

Different polymers have unique mechanical and chemical properties that determine their industrial applications.

Answer 1

The Correct Option is C

Step 1: Identifying Each Polymer - Polytetrafluoroethylene (PTFE) \( \text{[--CH}_2\text{--CF}_2\text{--]}_n \) → Used in gaskets, as it is resistant to chemicals and heat. - Polyacrylonitrile (PAN) \( \text{[--CH}_2\text{--CH--]}_n \text{CN} \) → Used in commercial fibres like synthetic textiles. - Epoxy resins \( \text{[--OCH}_2\text{CH}_2\text{O--]}_n \text{--C--} \text{--O--} \) → Used in safety helmets for their impact resistance. - Polyurethane \( \text{[--NHCONHCH}_2\text{--]}_n \) → Used in laminated sheets due to flexibility and strength. Conclusion Thus, the correct answer is: \[ A-II, B-IV, C-I, D-III \]