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The polymer, which can be stretched and retains its original status on releasing the force is (1) Bakelite (2) Nylon 6, 6 (3) Buna-N (4) Terylene

1. Bakelite
2. Nylon 6, 6
3. Buna-N
4. Terylene

Correct answer: Buna-N

Solution

Buna-N is a type of elastomer that exhibits elastic properties, allowing it to be stretched and return to its original shape once the force is removed, making it suitable for applications requiring flexibility and resilience.

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