Chapter 26 Polymers Notes - Class 10 Chemistry Punjab Board

Chapter 26 of Class 10 Chemistry, Polymers, explores the formation, structures, and everyday significance of high molecular mass macromolecules synthesised from small repeating units called monomers. The chapter systematically contrasts addition polymerisation – where alkene monomers like ethene, vinyl chloride, and styrene join without byproduct elimination to form polythene, polyvinyl chloride (PVC), and polystyrene – with condensation polymerisation, where bifunctional monomers combine with the loss of small byproduct molecules such as water or hydrogen chloride to produce synthetic polyamides (Nylon-6,6) and polyesters (Terylene/Dacron).

The chapter trains students to deduce the structural formula of parent monomers directly from polymer repeating units by analyzing carbon backbones and functional linkages. It classifies plastics into remoldable thermoplastics and heat-resistant thermosetting polymers, while outlining the immense industrial significance of synthetic fibers in the modern textile sector. Additionally, it addresses the grave environmental issues caused by non-biodegradable plastic accumulation in landfills and aquatic ecosystems, toxic gas emissions from incineration, and emphasizes sustainable recycling and biodegradable polymer development.

Polymers is the concluding chapter of Class 10 Chemistry for Punjab Board, regularly featured in board exam questions on polymerisation mechanisms, identifying monomers, and environmental impacts of plastics. These SLO-aligned solved notes for the 2026-2027 session provide students across Lahore, Faisalabad, Rawalpindi, Gujranwala, Multan, and all Punjab BISE boards with comprehensive answers to attain top marks in board examinations.