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Polymers

Multiple Choice Questions

361.

Bakelite is a

natural polymer
addition polymer
condensation polymer
homopolymer

362.

In the reaction sequence

X is

cyclohexanone
caprolactum
HO(CH₂)₆NH₂
hexamethylene diisocyanate

363.

The polymer which is used in non-sticky kitchen ware is

PVC
teflon
Rayon
isoprene

364.

Which of the following monomers, gives synthetic rubber on polymerisation ?

CH₂=CHCl
CCl₂=CCl₂
CH₂=C(CH₃)-CH=CH₂
CH₂=CCl-CH=CH₂

365.
Which among the following is a chain growth polymer?

Nylon

Bakelite

Terylene

Teflon

Teflon

The polymers which are formed by the successive addition of monomer units without the elimination of smaller molecules and which result in the growth ofthe chain, are called chain growth polymers. In other words, addition polymers are chain growth polymers. eg, teflon (polytetrafluoro ethylene).

nCF₂=CF₂ $\overset{Polymerisation}{\to} \underset{Teflon}{[- {CF}_{2} - {CF}_{2} -]_{n}}$