Polymers

Multiple Choice Questions

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In Buna-S, the symbol Bu stands for

  • 1-butene

  • n-butene

  • 2-butene

  • butadiene

D.

butadiene

When a mixture of 1,3-butadene and styrene in the ratio of 3:1 and in presence of sodium undergoes copolymensation, it gives styrene butadiene copolymer commonly called as styrene butadiene rubber ·
(SBR) or Buna-S

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    The monomers of buna-S rubber are

    • vinyl chloride and sulphur

    • butadiene

    • styrene and butadiene

    • isoprene and butadiene

    Answer

    Which of the following is a polyamide?

    • Nylon-6, 6

    • Terylene

    • Polythene

    • Buna - S

    Answer

    The condensation polymer among the following is

    • rubber

    • protein

    • PVC

    • polythene

    Answer

    Orlon has monomeric unit

    • acrolein

    • glycol

    • Vinyl cyanide

    • Isoprene

    Answer
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    'Terylene is not a

    • copolymer

    • polyester fibre

    • chain growth polymer

    • step growth polymer

    Answer

    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

    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

    Which of the following is not a biodegradable polymer?

    • Glyptol

    • Polyhydroxy butyrate-CO-β-hyrdoxy valerate

    • PHBV

    • Nylon 2-nylon-6

    Answer
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    A polymer containing nitrogen is :

    • bakelite

    • dacron

    • rubber

    • nylon-66

    Answer
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