Polymers are large molecules made up of repeating units called monomers. They play a vital role in our daily life—from plastics and rubber to proteins and DNA. Understanding polymers at the Class 10 level helps build strong fundamentals for the General Science section of the NDA CDS 1 2026 exam, where questions often test conceptual clarity, everyday applications, and basic chemistry principles.
Why Important for NDA CDS 1 2026
- The General Science section frequently includes questions on synthetic and natural polymers.
- Awareness of common materials (PVC, nylon, PET, rubber) helps in both static science and general awareness.
- Simple definitions, examples, and properties can secure quick and easy marks.
- Polymers often appear in application-based MCQs, so conceptual understanding is crucial.
Subtopics / Class Outline
1. Introduction to Polymers
- Definition of polymers and monomers
- Polymerisation (addition and condensation)
2. Classification of Polymers
- By Source: Natural, Synthetic, Semi-synthetic
- By Structure: Linear, Branched, Cross-linked
- By Polymerisation Process: Addition & Condensation polymers
3. Natural Polymers
- Examples: Starch, cellulose, proteins, natural rubber
- Basic properties and uses
4. Synthetic Polymers
- Plastics and fibres
- Examples: Polyethylene, PVC, polystyrene, nylon, Teflon
- Applications in daily life
5. Plastics and Their Types
- Thermoplastics vs Thermosetting plastics
- Uses and differences
- Examples: Bakelite, Melamine, Perspex
6. Synthetic Fibres
- Types: Nylon, Rayon, Polyester, Acrylic
- Characteristics and advantages
7. Rubber and Vulcanisation
- Natural rubber
- Process of vulcanisation
- Properties and applications of vulcanised rubber
8. Environmental Concerns
- Biodegradable vs non-biodegradable polymers
- Plastic pollution
- Development of eco-friendly polymers
9. Everyday Applications
- Household uses
- Packaging, textiles, cookware (Teflon), and medical equipment
Conclusion
Polymers form the backbone of many essential materials used in modern life. For NDA CDS 1 2026, mastering the basics of polymer types, examples, and uses will help you answer science questions confidently. A strong conceptual foundation also enhances your understanding of broader chemistry topics. By the end of this lesson, you should be able to identify common polymers, classify them, and understand why they are so important in both science and daily life.
