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     EduGorilla 
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    Which of the following statements is/are correct?

    Options :-

    1. Polypropylene, because of the presence of several chiral atoms, is optically active.
    2. Gutta percha and natural rubber are stereoisomers.
    3. Intermolecular forces of attraction in nylons are dipole-dipole interactions.
    4. Vulcanisation introduces hydrogen bonding between polymer chains.
    5. Dacron is a polyamide.
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