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JEE Advanced levelSingle correct optionDifficulty 3 of 3pl173

Match the rubber in Column I with the monomer(s) in Column II. Column I: (P) Buna-S, (Q) Buna-N, (R) neoprene, (S) natural rubber. Column II: (1) 2-chlorobuta-1,3-diene; (2) 2-methylbuta-1,3-diene; (3) buta-1,3-diene and styrene; (4) buta-1,3-diene and acrylonitrile.

  1. AP-1, Q-4, R-3, S-2
  2. BP-3, Q-4, R-2, S-1
  3. CP-3, Q-4, R-1, S-2
  4. DP-4, Q-3, R-1, S-2

Answer: C

Buna-S uses butadiene and styrene (3), Buna-N uses butadiene and acrylonitrile (4), neoprene uses 2-chlorobuta-1,3-diene (1) and natural rubber uses isoprene (2).
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