Which of the following polymers is formed by the condensation polymerization of ${\text{H}}_2\text{N}({\text{CH}}_2{)}_6{\text{NH}}_2$ and $\text{HOOC}({\text{CH}}_2{)}_4\text{COOH}$?

Solution

1. The reactants are ${\text{H}}_2\text{N}({\text{CH}}_2{)}_6{\text{NH}}_2$ (hexamethylenediamine) and $\text{HOOC}({\text{CH}}_2{)}_4\text{COOH}$ (adipic acid).
2. These monomers undergo condensation polymerization with the loss of water molecules.
3. The resulting polyamide is known as $\text{Nylon 6,6}$.
4. Hence the answer is (A).