Question

Which of the following has cross-linked polymer chains?

• A. Bakelite
• B. Polyester
• C. PVC
• D. Nylon

Answer 1

The correct option is A

Bakelite

Explanation for the correct option:

(a) bakelite

• Bakelite is formed by cross-linking of novolac and formaldehyde.

• Hence this option is correct

Explanation for the incorrect options:

(b) Polyester

• Polyester is a type of polymer that has an ester functional group in each repeat unit of its main chain.
• it is not cross-chain polymer.
• Thus, this option is incorrect.

(c) PVC

• PVC is a polymer composed of a long chain of vinyl chloride molecules.
• it is not cross-chain polymer.
• Thus, this option is incorrect.

(d) Nylon

• Nylon-$6,6$ is composed of two monomers, each of which contains six carbon atoms (thus the name).
• it is not cross-chain polymer.
• Thus, this option is incorrect.

Hence the correct option is (a) Bakelite