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JEE Advanced levelOne or more correct optionsDifficulty 3 of 3pl106

Take the repeat unit of nylon 2-nylon 6 as one glycine residue plus one 6-aminohexanoic acid residue, (). Which statements are correct (C 12, H 1, N 14, O 16)?

  1. ABoth monomers are amino acids.
  2. BThe repeat unit has a molar mass of 170 g/mol.
  3. CEach repeat unit contains two amide groups.
  4. DIt forms by chain-growth addition polymerisation of alkene monomers.

Answer: A, B, C

Mass . The repeat unit has two groups, made by condensation of two amino acids with loss of water. It is not formed from alkenes.
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