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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
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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संबंधित प्रश्न
Write the mechanism of free radical polymerization of ethene.
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 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: Polytetrafluoroethene is used in making non-stick cookwares.
Reason: Fluorine has highest electronegativity.
Which one of the following can be used as monomer in a polymerisation reaction?
The Ziegler Natta catalyst are
Which of the following statements about low density polythene is false?
