An example of natural biopolymer is from Chemistry Polymers

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151.

Buna-N, a synthetic rubber is copolymer of

  • H2C = CH - CH = CH2 and H5C6 - CH = CH2

  • H2C = CH - CN and H2C = CH - CH = CH2

  • H2C = CH - CCl = CH2 and H2C = CH - CH = CH2

  • H2C = CN - CN and H2C = CH - CCl = CH2


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152.

An example of natural biopolymer is

  • teflon

  • nylon-66

  • rubber

  • DNA


D.

DNA

The natural polymer which controls the various life processes in the body of organism is called biopolymer, e.g., DNA, RNA.

Rubber is also a natural polymer but not a biopolymer.

Teflon and nylon-66 are synthetic polymers.


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153.

The condensation polymer among the following is

  • rubber

  • protein

  • PVC

  • polyethene


154.

The monomers of terylene are

  • phenol and formaldehyde

  • ethylene glycol and phthalic acid

  • adipic acid and hexamethylenediamine

  • ethylene glycol and terephthalic acid


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155.

Heating of rubber with sulphur is called

  • vulcanisation

  • galvanisation

  • sulphonation

  • bessemerisation


156.

Styrene can be purified by

  • simple distillation

  • fractional distillation

  • steam distillation

  • vacuum distillation


157.

The monomer of teflon is

  • CHF = CH2

  • CF2 = CF2

  • CHCl = CHCl

  • CHF = CHCl


158.

The monomer of the polymer

 

  • H2C = C(CH3)2

  • (CH3)2C = C(CH3)2

  • CH3CH = CH CH3

  • CH3CH = CH2


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159.

When addition polymerisation of ethene takes place in a hydrocarbon solvent in the presence of ziegler-Natta catalyst, it forms:

  • LDP

  • HDP

  • Polyacrylnitrile

  • Teflon


160.

Which of the following polymers is prepared by condensation polymerisation ?

  • Teflon

  • Styrene

  • Rubber

  • Nylon 6, 6


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