The correct answer is A. Nylon 66.
Nylon 66 is a synthetic polyamide that is produced by the condensation of hexamethylene diamine and adipic acid. It is a strong, lightweight, and durable material that is used in a variety of applications, including textiles, fibers, and plastics.
Terylene, also known as polyester, is a synthetic fiber that is produced by the condensation of ethylene glycol and terephthalic acid. It is a strong, lightweight, and wrinkle-resistant material that is used in a variety of applications, including clothing, home furnishings, and industrial products.
Tollen’s reagent is a solution of silver nitrate in ammonia. It is used to test for the presence of aldehydes and ketones.
Bakelite is a thermosetting plastic that is produced by the condensation of phenol and formaldehyde. It is a hard, brittle material that is used in a variety of applications, including electrical insulation, cookware, and furniture.