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कर्नाटक बोर्ड पी.यू.सी.पीयूसी विज्ञान 2nd PUC Class 12

Assertion: Olefinic monomers undergo addition polymerisation. Reason: Polymerisation of vinyl chloride is initiated by peroxides/ persulphates. - Chemistry

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प्रश्न

Assertion: Olefinic monomers undergo addition polymerisation.

Reason: Polymerisation of vinyl chloride is initiated by peroxides/ persulphates.

विकल्प

  • Assertion and reason both are correct statement but reason does not explain assertion.

  • Assertion and reason both are correct statements and reason explains the assertion.

  • Both assertion and reason are wrong statement.

  • Assertion is correct statement and reason is wrong statement.

  • Assertion is wrong statement and reason is correct statement

MCQ
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उत्तर

Assertion and reason both are correct statement but reason does not explain assertion.

Explanation:

In addition, polymerisation, the molecules of the same monomer of different monomers add together on a large scale to form a polymer. The monomers used are unsaturated compounds, e.g., alkenes, alkadienes and their derivatives. This mode of polymerisation leading to an increase in chain length or chain growth can take place through the formation of either free radicals or ionic species.

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अध्याय 15: Polymers - Multiple Choice Questions (Type - I) [पृष्ठ २२५]

APPEARS IN

एनसीईआरटी एक्झांप्लर Chemistry [English] Class 12
अध्याय 15 Polymers
Multiple Choice Questions (Type - I) | Q 48 | पृष्ठ २२५

संबंधित प्रश्न

How are polythene and neoprene prepared?


Write the molecular formula and structural formula of BHA and BHT.

 


What is the role of t-butyl peroxide in the polymerization of ethene?


Write the mechanism of free radical polymerization of ethene.


Which of the following is a natural polymer ? Buna-S, Proteins, PVC


Which of the following statements is not true about low-density polythene?


Out of chain growth polymerisation and step growth polymerisation, in which type will you place the following.


Match the polymer of column I with correct monomer of column II.

Column I Column II
(i) High density polythene (a) Isoprene
(ii) Neoprene (b) Tetrafluoroethene
(iii) Natural rubber (c) Chloroprene
(iv) Teflon (d) Acrylonitrile
(v) Acrilan (e) Ethene

Match the polymers given in Column I with the preferred mode of polymerisation followed by their monomers.

Column I Column II
(i) Nylon-6,6 (a) Free radical polymerisation
(ii) PVC (b) Ziegler-Natta polymerisation or coordination polymerisation
(iii) HDP (c) Anionic polymerisation
  (d) Condensation polymerisation

Low density polythene and high density polythene, both are polymers of ethene but there is marked difference in their properties. Explain.


By which reaction ethene is obtained from ethyne?


Which one of the following can be used as monomer in a polymerisation reaction?


The Ziegler Natta catalyst are


Orlon fibres are made up of ______.


Which of the following statements about low density polythene is false?


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