1
MCQ (Single Correct Answer)

AIPMT 2008

Which one of the following statements is not true?
A
Buna-S is a copolymer of butadiene and styrene.
B
Natural rubber is a, 1,4-polymer of isoprene.
C
In vulcanization, the formation of sulphur bridges between different chains make rubber harder and stronger.
D
Natural rubber has the trans-configuration at every double bond.

Explanation

Natural rubber is cis-1, 3 polyisoprene and has only cis-configuration about the double bond.
2
MCQ (Single Correct Answer)

AIPMT 2007

Which one of the following polymers is prepared by condensation polymerisation?
A
Teflon
B
Natural rubber
C
Styrene
D
Nylon-6,6

Explanation

Nylon-6,6 is a condensation polymer of adipic acid and hexamethylene diamine.
3
MCQ (Single Correct Answer)

AIPMT 2006


is a
A
homopolymer
B
copolymer
C
addition polymer
D
thermosetting polymer.

Explanation

It is formed by the condensation of adipic acid and hexamethylene diamine. It is a copolymer.
4
MCQ (Single Correct Answer)

AIPMT 2005

The monomer of the polymer
A
B
CH3CH$$=$$CHCH3
C
CH3CH$$=$$CH2
D
(CH3)2C$$=$$C(CH3)2

Explanation

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