Polymers

Multiple Choice Questions

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'Terylene is not a

  • copolymer

  • polyester fibre

  • chain growth polymer

  • step growth polymer

C.

chain growth polymer

Terylene is a copolymer of terephthalic acid and ethylene glycol. It is a polyester fibre.

Since, it is a product of condensation polymerisation, in which molecular mass of polymer is not a whole number of monomer (due to loss of H2O molecules), so it is also called step growth polymer.

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    Three dimensional molecules with cross links are formed in the case of a

    • thermoplastic

    • thermosetting plastic

    • Both (a) and (b)

    • None of the above

    Answer

    In Buna-S, the symbol Bu stands for

    • 1-butene

    • n-butene

    • 2-butene

    • butadiene

    Answer

    Which of the following is not true?

    • In vulcanisation, the rubber becomes harder and stronger

    • Natural rubber has 'trans' configuration at every double bond

    • Buna-S is a copolymer of butene and styrene

    • Natural rubber is 1, 4-polymer of isoprene

    Answer

    The condensation polymer among the following is

    • rubber

    • protein

    • PVC

    • polythene

    Answer
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    Orlon has monomeric unit

    • acrolein

    • glycol

    • Vinyl cyanide

    • Isoprene

    Answer

    Which of the following is not a biodegradable polymer?

    • Glyptol

    • Polyhydroxy butyrate-CO-β-hyrdoxy valerate

    • PHBV

    • Nylon 2-nylon-6

    Answer

    A polymer containing nitrogen is :

    • bakelite

    • dacron

    • rubber

    • nylon-66

    Answer

    Which of the following is a polyamide?

    • Nylon-6, 6

    • Terylene

    • Polythene

    • Buna - S

    Answer
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    The monomers of buna-S rubber are

    • vinyl chloride and sulphur

    • butadiene

    • styrene and butadiene

    • isoprene and butadiene

    Answer
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