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प्रश्न
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 |
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उत्तर
| Column I | Column II |
| (i) High density polythene | (e) Ethene |
| (ii) Neoprene | (c) Chloroprene |
| (iii) Natural rubber | (a) Isoprene |
| (iv) Teflon | (b) Tetrafluoroethene |
| (v) Acrilan | (d) Acrylonitrile |
Explanation:
| Column I | Column II |
| (i) High density polythene | It is formed when addition polymerisation of ethene takes place in a hydrocarbon solvent in the presence of a catalyst. |
| (ii) Neoprene | Neoprene or polychloroprene is formed by the free radical polymerisation of chloroprene. |
| (iii) Natural rubber | Natural rubber may be considered as a linear polymer of isoprene (2-methyl-1, 3-butadiene). |
| (iv) Teflon | Teflon is manufactured by heating tetrafluoroethene with a free radical or persulphate catalyst at high pressures. |
| (v) Acrilan | The addition polymerisation of acrylonitrile in pressure of a peroxide catalyst leads to the formation of polyacrylonitrile. |
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संबंधित प्रश्न
What is the role of t-butyl peroxide in the polymerization of ethene?
Which of the following is a natural polymer ? Buna-S, Proteins, PVC
Write the free radical mechanism for the polymerisation of ethene.
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.
What is the role of benzoyl peroxide in addition polymerisation of alkenes? Explain its mode of action with the help of an example.
Match the polymers given in Column I with their chemical names given in Column II.
| Column I | Column II |
| (i) Nylon 6 | (a) Polyvinyl chloride |
| (ii) PVC | (b) Polyacrylonitrile |
| (iii) Acrilan | (c) Polycaprolactum |
| (iv) Natural rubber | (d) Low-density polythene |
| (v) LDP | (e) cis-polyisoprene |
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 |
Assertion: Olefinic monomers undergo addition polymerisation.
Reason: Polymerisation of vinyl chloride is initiated by peroxides/ persulphates.
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?
Which of the following is chain-growth polymer?
Which one of the following polymers are prepared by addition polymerisation?
Orlon fibres are made up of ______.
\[\ce{X + C + Cl2 ->[High temperature][of about 1000 K] Y + CO}\];
\[\ce{Y + 2H2O -> Z + 2HCl}\]
Compound Y is found in polymeric chain structure and is an electron-deficient Molecule. Y must be:
Which of the following statements about low density polythene is false?
