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Acrilan is a hard, horny and a high melting material. Which of the following represents its structure?

1. −CH2−CH− | Cl n
2. CH2−CH− | CN n
3. −CH2−C− | COOCH3 n
4. −CH2−CH− | COOC2H5 n

Correct answer: CH2−CH− | CN n

Solution

Acrilan is a polymer of acrylonitrile, which has the repeating unit −CH2−CH− | CN. This structure gives it its hard and high melting properties.

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