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

M g

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C a

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B a

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N a

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Solution

The correct option is A $N a$
The s-block element used as a catalyst in the manufacture of Buna-S rubber is sodium ( $N a$ ) metal. Buna-S or styrene butadiene rubber (SBR) is a copolymer of styrene and 1,3-butadiene.

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