Which of the following polymers is produced by condensation polymerization?

• A. Polyvinyl chloride
• B. Polystyrene
• C. $\mathrm{Nylon}-6,6$
• D. Polyethylene

Answer: (C)

Verified step by step guidance

1. Understand the difference between addition polymerization and condensation polymerization. Addition polymerization involves monomers adding together without the loss of any small molecules, while condensation polymerization involves monomers joining with the loss of a small molecule such as water or HCl.
2. Identify the type of polymerization for each polymer listed: Polyvinyl chloride (PVC), Polystyrene, Nylon-6,6, and Polyethylene.
3. Recognize that Polyvinyl chloride, Polystyrene, and Polyethylene are formed by addition polymerization because their monomers contain double bonds that open up and link without losing any atoms.
4. Know that Nylon-6,6 is formed by condensation polymerization because it is made from a diamine and a dicarboxylic acid, which react to form amide bonds with the elimination of water molecules.
5. Conclude that Nylon-6,6 is the polymer produced by condensation polymerization, as it involves the stepwise reaction of monomers with the loss of small molecules, unlike the other polymers listed.