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1

AIPMT 2011 Prelims

MCQ (Single Correct Answer)
Of the following which one is classified as polyester polymer?
A
Terylene
B
Bakelite
C
Melamine
D
Nylon-6,6

Explanation

Terylene (Dacron) is a polyester polymer.
2

AIPMT 2010 Prelims

MCQ (Single Correct Answer)
Which of the following structures represents neoprene polymer?
A
B
C
D

Explanation

Neoprene is :


It is a polymer of chloroprene.
3

AIPMT 2009

MCQ (Single Correct Answer)
Structures of some common polymers are given. Which one is not correctly presented?
A
B
C
D

Explanation

The structure of neoprene is
4

AIPMT 2008

MCQ (Single Correct Answer)
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.

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