Q.

Amide linkage is absent is

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a

PHBV

b

Nylon - 2- Nylon - 6

c

Nylon - 6

d

Nylon - 66

answer is D.

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Detailed Solution

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  • Amide linkage is present in nylon polymers such as Nylon-6 and Nylon-66. 
  • Nylon-2-Nylon-6 is a copolymer of nylon-2 and nylon-6 and also contains amide linkage. 
  • However, PHBV (polyhydroxybutyrate-co-hydroxyvalerate) is a polyester and does not contain amide linkage.
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