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Rubber and vulcanisation
NEET level
Single correct option
Difficulty 1 of 3
pl175
Buna-S is a copolymer of
A
buta-1,3-diene and styrene
B
ethene and styrene
C
isoprene and styrene
D
buta-1,3-diene and acrylonitrile
Answer: A
Buna-S is formed from buta-1,3-diene and styrene (
CH
X
2
=
CH
−
C
X
6
H
X
5
); the S stands for styrene. Buna-N uses acrylonitrile instead.
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