Natural rubber is formed by polymerisation of which of the follow

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 Multiple Choice QuestionsMultiple Choice Questions

51.

The monomer of neoprene is

  • 1,3-butadiene

  • 2-chloro-1,3-butadiene

  • 2-methyl-1,3-butadiene

  • vinyl chloride


52.

Example of a biodegradable polymer pair is

  • nylon-6, 6 and terylene

  • PHBV and dextron

  • bakelite and PVC

  • PET and polyethylene


53.

The polymer obtained with methylene bridges by condensation polymer is

  • PVC

  • buna-S

  • polyacrylonitrile

  • bakelite


54.

Identify the copolymer from the following


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55.

Observe the following polymers.

I. PHBV

II. Nylon-2-nylon-6

III. Glyptal

IV. Bakelite

Biodegradable polymer(s) from the above is/ are

  • III

  • I and II

  • IV 

  • III and IV


56.

Which one of the following is not used as an initiator in ionic polymerisation?

  • NaNH2

  • SnCl2

  • AlCl3

  • (C6H5CO)2O2


57.

Which of the following is an example of condensation polymers?

  • Polythene

  • PVC

  • Orlon

  • Terylene


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58.

Natural rubber is formed by polymerisation of which of the following?

  • Phenol

  • Isoprene

  • Chloroprene

  • Styrene


B.

Isoprene

Natrual rubber is an addition polymer of isoprene (2-methyl-1, 3-butadiene].

nCH2=C(CH3)-CH=CH2 Polymerisation [-CH2-C(CH3)=CH-CH2]n


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59.

Which of the following is the thermosetting plastic?

  • Nylon

  • Bakelite

  • Polythene

  • Polystyrene


60.

Natural rubber is

  • butadiene

  • isoprene

  • neoprene

  • None of the above


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