The monomer of Buna-S are:

styrene and butadiene

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isoprene and butadiene

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vinyl chloride and Sulphur

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butadiene.

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Solution

The correct option is A styrene and butadiene
Styrene and 1,3-Butadiene.
Styrene-butadiene or styrene-butadiene rubber (SBR) describe families of synthetic rubbers derived from styrene and butadiene (the version developed by Goodyear is called Neolite). These materials have good abrasion resistance and good ageing stability when protected by additives. About 50% of car tires are made from various types of SBR. The styrene/butadiene ratio influences the properties of the polymer: with high styrene content, the rubbers are harder and less rubbery.

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Similar questions

Q. Buna-S rubber is which of the following of 1-3-butadiene and styrene

Q. Assertion: Polybutadiene is an example of chain growth polymer

Reason: Copolymerization of butadiene and styrene gives Buna - S

Q. Acrylonitrile, butadiene and styrene are a kind of:

Match the polymers given in Column I with their commercial names given in Column II.

$\begin{matrix} C o l u m n I & C o l u m n I I A . & P o l y e s t e r o f g l y c o l a n d p h t h a l i c a c i d & 1. & N o v o l a c B . & C o p o l y m e r o f 1, 3 - b u t a d i e n e a n d s t y r e n e & 2. & G l y p t a l C . & P h e n o l a n d f o r m a l d e h y d e r e s i n & 3. & B u n a - S D . & P o l y e s t e r o f g l y c o l a n d t e r e p h t h a l i c a c i d & 4. & B u n a - N E . & C o p o l y m e r o f 1, 3 - b u t a d i e n e a n d a c r y l o n i t r i l e & 5. & D a c r o n \end{matrix}$

Q. Match list I with list II and select the correct answer using the codes given below the lists.

List I (Polymer)	List II (Polymerizing units)
$A . B a k e l i t e$	(i) Butadiene and styrene
$B . D a c r o n$	(ii) Phenol and methanal
$C . N y l o n - 6, 6$	(iii) 1, 2-dihydroxyethane and dimethylterephthalate
$D . B u n a - S$	(iv) Urea and methanol
	(v) 1,6-hexanedioic acid and 1,6-dimino hexane

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