Polymer obtained from 1,3-butadiene and acrylonitrile (Buna-N)

The same question, asked 2 times: 9 May 2023 S1, 12 May 2026 S2. Every wording below, oldest first.

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Question 1
9 May 2023 S1
55 $Which polymer is obtained from monomers using butadiene and acrylonitrile?$
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Question 2
12 May 2026 S2
49 $Identify the polymer obtained from acrylonitrile and 1,3-butadiene.$
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