Single Choice

Which of the following polymers is not correctly matched?

AFormation of dacron - Step-growth polymerisation
BFormation of polytetrafluoroethene - Step-growth polymerization
Correct Answer
CFormation of polythene - Chain-growth polymerization in presence of benzoyl peroxide
DFormation of polyacrylonitrile - Chain-growth polymerization in presence of peroxide

Solution

[1] Chain-growth polymerisation- This forms addition polymers. 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. However, the free radical governed addition is the most common mode.

[2] Step-growth polymerisation- This forms condensation polymers. In these reactions, the product of each step is again a bi-functional species and the sequence of condensation goes on. Since each step produces a distinct functionalised species and is independent of each other, this process is called as step growth polymerisation.

Since polytetrafluoroethylene is an addition polymer, it is formed by chain growth polymerisation.

Option B is not correctly matched.

SIMILAR QUESTIONS

Polymers

The copolymer formed by addition polymerization of styrene and acrylonitrile in the presence of peroxide is:

Polymers

cis-Polyisoprene possesses elastic property because:

Polymers

Which of the following is an addition polymer?

Polymers

(MCPB meta -chloro perbenzoic acid) stereochemistry of the product of the above reaction is :

Polymers

Name the type of polymerisation (addition or condensation) and name the monomers in polyethylene.

Polymers

(i) Arrange the following compounds in the ascending order of their basic strength and give reasons for your answer: Methylamine, Aniline, Ethylamine, Diethyl ether (ii) Name the monomers and the type of polymerization in each of the folloiwng polymers: (a) Polyester (b) Bakelite

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