Question:
Which of the following is not an example of copolymer?
Which of the following is not an example of copolymer?
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If only one monomer repeats throughout the polymer chain, the polymer is a homopolymer.
Updated On: Jun 8, 2026
- Bakelite
- Dacron
- Buna-N
- Perlan-L
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The Correct Option is D
Solution and Explanation
Concept:
A copolymer is formed from two or more different monomers, whereas a homopolymer is formed from only one monomer.
Step 1: Identify the monomers of each polymer.
• Bakelite: Phenol + Formaldehyde
• Dacron: Ethylene glycol + Terephthalic acid
• Buna-N: Butadiene + Acrylonitrile
All these are formed using two different monomers, hence they are copolymers.
Step 2: Analyze Perlan-L.
Perlan-L is obtained from caprolactam: \[ \text{Caprolactam} \rightarrow \text{Nylon-6} \] Since only one monomer is involved, it is a homopolymer. Therefore, it is not a copolymer. Hence: \[ \boxed{\text{Perlan-L}} \]
Step 1: Identify the monomers of each polymer.
• Bakelite: Phenol + Formaldehyde
• Dacron: Ethylene glycol + Terephthalic acid
• Buna-N: Butadiene + Acrylonitrile
All these are formed using two different monomers, hence they are copolymers.
Step 2: Analyze Perlan-L.
Perlan-L is obtained from caprolactam: \[ \text{Caprolactam} \rightarrow \text{Nylon-6} \] Since only one monomer is involved, it is a homopolymer. Therefore, it is not a copolymer. Hence: \[ \boxed{\text{Perlan-L}} \]
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