JEE Main202125 Feb 2021Morning ShiftChemistryPolymersActual
Which statement is correct?
Options
- ASynthesis of Buna- S needs nascent oxygen.
- BBuna- S is a synthetic and linear thermosetting polymer.
- CBuna- N is a natural polymer.
- DNeoprene is an addition copolymer used in plastic bucket manufacturing.
Correct answer
A. Synthesis of Buna- S needs nascent oxygen.
Step-by-step 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.