Question:
Identify the polymer, not having cross-linking.
Identify the polymer, not having cross-linking.
Show Hint
Low density polythene has branched but not cross-linked chains.
Updated On: Nov 12, 2026
- Bakelite
- Low density polythene
- Melamine
- Vulcanized rubber
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The Correct Option is B
Solution and Explanation
Step 1: Understanding the Concept
Cross-linked polymers have covalent bonds joining chains into a network.
Step 2: Check each polymer
Bakelite, melamine-formaldehyde polymer and vulcanised rubber are cross-linked (network) polymers.
Step 3: Low density polythene
Low density polythene has branched chains but no cross-links between them.
Final Answer:
Low density polythene is not cross-linked. \[ \boxed{\text{(B) }\text{Low density polythene}} \]
Cross-linked polymers have covalent bonds joining chains into a network.
Step 2: Check each polymer
Bakelite, melamine-formaldehyde polymer and vulcanised rubber are cross-linked (network) polymers.
Step 3: Low density polythene
Low density polythene has branched chains but no cross-links between them.
Final Answer:
Low density polythene is not cross-linked. \[ \boxed{\text{(B) }\text{Low density polythene}} \]
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