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Question

The monomers of Buna-S rubber are:

A
isoprene and butadiene
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B
butadiene and phenol
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C
styrene and butadiene
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D
vinyl chloride and sulphur
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Solution

The correct option is D styrene and butadiene
The monomers of Buna-S rubber are styrene and butadiene.
Styrene is ethyl benzene C6H5CH=CH2.

Butadiene is CH2=CHCH=CH2

Buna S is also called styrene butadiene rubber. It is used in making inner tubes for tyres, motors, bubble gums, etc.

Hence, option C is correct.

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