Polymers important points – Polymers are the large molecules made up of repeating units called monomers. They can be classified into plastics, fibers, and the elastomers. Plastics are versatile and moldable, used in everyday products. Fibers have the high strength and are used in textiles. Elastomers can undergo large deformations and return to their original shape.
Polymers can be natural or synthetic, with synthetic polymers being more commonly used. Properties of the polymers depends on their structure and composition. They can be amorphous or crystalline, and their molecular weight affects their properties. Polymers can be blended or cross-linked to enhance the specific characteristics. Copolymers combine different monomers. Biodegradable polymers break down naturally. Recycling is crucial for reducing the plastic waste. Polymers are processed using the various techniques. Additives can modify their properties.
Polymers find the applications in packaging, automotive, healthcare, and more. They offer lightweight, corrosion resistance, and insulation properties. Ongoing research focuses on developing the new materials, sustainable alternatives, and recycling technologies.
Polymers important points, Polymers important points, Polymers important points, Polymers important points, Polymers important points, Polymers important points, Polymers important points
NCERT Chemistry Class 12 Chapter 15 – 25 Polymers important points
There are 25 important points on Polymers –
- Polymers are the large molecules composed of repeating subunits called monomers.
- Monomers are the small molecules that can chemically bond together to form a polymer chain.
- The process of monomers joining together to form a polymer is called as polymerization.
- Polymers can be classified into three main categories named as plastics, fibers, and elastomers.
- Plastics are the polymers that can be molded into various shapes and forms. They are widely used in everyday products such as the bottles, containers, and packaging materials.
- Fibers are the polymers that have a high tensile strength and are commonly used to make textiles, including the clothing, carpets, and ropes.
- Elastomers are the polymers that can undergo large deformations and then return to their original shape. They are used in applications such as the rubber bands, tires, and seals.
- Polymers can be either natural or synthetic. Natural polymers are found in the nature and includes substances like cellulose, proteins, and natural rubber.
- Synthetic polymers are the artificially created through chemical processes.
- Synthetic polymers are more widely used than the natural polymers due to their versatility, ease of manufacturing, and cost-effectiveness.
- Common synthetic polymers includes polyethylene, polypropylene, polyvinyl chloride (PVC), polystyrene, and polyethylene terephthalate (PET).
- The properties of the polymers can vary greatly depending on their chemical structure and composition.
- Some of the polymers are amorphous, meaning they have a random arrangement of polymer chains, while others are crystalline, with a highly ordered arrangement.
- The molecular weight of a polymer refers to size of its chains, which can affect its mechanical properties.
- Polymers can have a wide range of physical and chemical properties, including the flexibility, strength, transparency, thermal stability, electrical conductivity, and chemical resistance.
- Polymer blends or composites can be created by combining different types of polymers or adding the other substances, such as fillers or reinforcements, to enhance certain properties.
- Cross-linking is a process that can be used to strengthen the polymers by creating chemical bonds between polymer chains.
- Copolymers are the polymers composed of two or more different types of monomers.
19.They can exhibit a combination of properties from each monomer.
- Biodegradable polymers are designed to break down naturally in environment, reducing their impact on waste accumulation.
- Polymer recycling is an important process for reducing the plastic waste and promoting sustainability.
- Polymers can be processed using various techniques, including the extrusion, injection molding, blow molding, and casting, to create the products of different shapes and sizes.
- Polymer additives, such as plasticizers, stabilizers, and flame retardants, can be used to modify properties of polymers or enhance their performance.
- Polymers have a wide range of applications in the industries such as packaging, automotive, construction, healthcare, electronics, and textiles.
- Polymer-based materials are often chosen for their lightweight nature, corrosion resistance, insulation properties, and ease of processing.
Some Important Questions From Biology Class 11
| Chapter Name | Quiz Link |
| The Living World | Play Now |
| Biological Classification | Play Now |
| Plant Kingdom | Play Now |
| Animal Kingdom | Play Now |
| Morphology of flowering plants | Play Now |
| Anatomy of flowering plants | Play Now |
| Cell: the unit of life | Play Now |
| Biomolecules | Play Now |
| Cell Cycle and cell division | Play Now |
| Transport in Plants | Play Now |
| Structural organisation in Animals | Play Now |
| Mineral nutrition | Play Now |
| Photosynthesis in higher plants | Play Now |
| Respiration in plants | Play Now |
| Plant Growth and development | Play Now |
| Digestion and Absorption | Play Now |
| Breathing and Exchange of Gases | Play Now |
| Body fluids and circulation | Play Now |
| Excretory products and their elimination | Play Now |
| Locomotion and Movement | Play Now |
| Neural Control and Coordination | Play Now |
| Chemical Coordination and Integration | Play Now |
Some Important Questions From Biology Class 12
| Chapter Name | Quiz Link |
| Reproduction in organism | Play Now |
| Sexual reproduction in flowering plant | Play Now |
| Human reproduction | Play Now |
| Reproductive health | Play Now |
| Principles of inheritance and variation | Play Now |
| Molecular basis of inheritance | Play Now |
| Evolution | Play Now |
| Human health and disease | Play Now |
| Strategies for enhancement in food product | Play Now |
| Microbes in human welfare | Play Now |
| Biotechnology principles and processes | Play Now |
| Biotechnology and its application | Play Now |
| Organism and population | Play Now |
| Ecosystem | Play Now |
| Biodiversity and its conservation | Play Now |
| Environment issue | Play Now |
155 out of 200 questions were directly asked from these notes in NEET 2024
