Adipic acid is used in the preparation of

• A

  nylon-6
• B

  dacron
• Correct answer
  C

  nylon-66
• D

  novolac

Solution

Nylon-66 is a polymer of hexamethylene diammine and adipic acid. $n \mathrm{HOOC}\left(\mathrm{CH}_{2}\right)_{4} \mathrm{COOH}+n \mathrm{H}_{2} \mathrm{~N}\left(\mathrm{CH}_{2}\right)_{6} \mathrm{NH}_{2}$

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