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प्रश्न
Out of chain growth polymerisation and step growth polymerisation, in which type will you place the following.
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उत्तर
It is an example of chain growth polymerisation, since in this polymerisation only addition occurs.
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संबंधित प्रश्न
Write the molecular formula and structural formula of BHA and BHT.
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?
Why should the monomers used in addition polymerisation through free radical pathway be very pure?
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 |
Assertion: Polytetrafluoroethene is used in making non-stick cookwares.
Reason: Fluorine has highest electronegativity.
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
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?
