(C) $Buna-S$ rubber is a copolymer of $1,3-butadiene$ and styrene. It is prepared by the polymerization of $1,3-butadiene$ $(75 \%)$ and styrene $(25

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(C) $Buna-S$ rubber is a copolymer of $1,3-butadiene$ and styrene. It is prepared by the polymerization of $1,3-butadiene$ $(75 \%)$ and styrene $(25 \%)$ in the presence of sodium $(Na)$ as a catalyst. Thus,the $s$-block element used is $Na$.

Class 12 Chemistry Polymers General methods of preparation and mechanism of polymerisation

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The $s$-block element used as a catalyst in the manufacture of $Buna-S$ rubber is

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A
$Ca$
B
$Mg$
C
$Na$
D
All of the above

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Polymers

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General methods of preparation and mechanism of polymerisation

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The homopolymer formed from $4-$hydroxybutanoic acid is:

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The $s$-block element used as a catalyst in the manufacture of $Buna-S$ rubber is

Similar Questions

Which of the following polymers requires a dihydric alcohol and an aromatic dicarboxylic acid for its synthesis?

The polymer $(Q)$ produced in the following sequence is:Cyclohexanone $\xrightarrow[{(ii)\,\,{H_2}SO_4\,,\,\Delta }]{{(i)\,\,NH_2 - OH}}\,P\,$ $\xrightarrow[{533\, - \,543\,\,K}]{{{H_2}O}}Q$

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The polymer $(Q)$ produced in the following sequence is:
Cyclohexanone $\xrightarrow[{(ii)\,\,{H_2}SO_4\,,\,\Delta }]{{(i)\,\,NH_2 - OH}}\,P\,$ $\xrightarrow[{533\, - \,543\,\,K}]{{{H_2}O}}Q$