Multiple choice Which of the following groups contain only synthetic fibres? Nylon, Terylene, Wool Cotton, Polycot, Rayon PVC, Polythene, Bakelite Acrylic, Silk, Wool Reveal answer Fill a bubble to check yourself C Correct answer Explanation PVC, Polythene, and Bakelite are all synthetic polymers. The other options contain natural fibres like wool, cotton, or silk.