Q20 / 90 · JEE Main 2021 (25 Feb Shift 1) · Chemistry

Which statement is correct?

  • Correct answer
    A
    Synthesis of Buna-S needs nascent oxygen.
  • B
    Buna-S is a synthetic and linear thermosetting polymer.
  • C
    Buna-N is a natural polymer.
  • D
    Neoprene is an addition copolymer used in plastic bucket manufacturing.

Solution

Buna-S is an elastomer

Buna-N is a synthetic polymer

Buna-S is polymerised by addition polymerisation method which needs radical initiator for chain propagation step. Nascent oxygen can be used as an Radical initiator.

Neoprene is a synthetic rubber.

Figure

Hence, the correct answer is option: 'A'.

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