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NCERT Class 12 Chemistry Polymers Solutions is available on this page. NCERT Class 12 Chemistry Solutions are curated by the subject experts to help students to score well in the exam.
Polymers are large molecules composed of repeating subunits called monomers. They are macromolecules formed through a process called polymerization, in which monomers chemically bond together to create a long chain-like structure. The word "polymer" comes from the Greek words "poly," meaning "many," and "meros," meaning "parts" or "units."
There are several types of polymers, including synthetic polymers, which are human-made, and natural polymers, which occur in nature. Synthetic polymers are widely used in various industries due to their versatility, durability, and ability to be tailored for specific applications.
- Topics Covered in NCERT Chemistry Class 12 Polymers Chapter
- NCERT Chemistry Class 12th Solution PDF - Polymers Chapter Download
- Polymers Solutions
Topics Covered in NCERT Chemistry Class 12 Polymers Chapter
Here are some key aspects of polymers:
Structure: Polymers have a repetitive structure, with the monomer units repeating in a specific sequence or pattern. The arrangement of monomers affects the physical and chemical properties of the polymer. Polymers can be linear, branched, or cross-linked, depending on the type of bonding between the monomer units.
Classification: Polymers can be classified based on their origin, chemical structure, and behavior. They can be further categorized into thermoplastics and thermosetting polymers. Thermoplastics can be melted and reprocessed multiple times without significant degradation, while thermosetting polymers undergo irreversible chemical reactions upon curing and cannot be melted and reprocessed.
Properties: Polymers possess a wide range of properties, including mechanical strength, flexibility, electrical conductivity, thermal stability, and chemical resistance. The properties of a polymer depend on factors such as the nature of monomers, polymer chain length, branching, cross-linking, and intermolecular forces.
Applications: Polymers have numerous applications across various industries. They are used in the production of plastics, fibers, elastomers, coatings, adhesives, and films. Polymers are found in everyday items such as bottles, packaging materials, clothing, automotive parts, medical devices, and electronic components.
Polymer Processing: Polymers can be processed into various forms, including extrusion, injection molding, blow molding, and casting. These processes allow the shaping and forming of polymers into desired products with different geometries and sizes.
Polymer Characterization: Scientists and engineers use various techniques to characterize polymers, such as gel permeation chromatography (GPC), Fourier-transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), and mechanical testing. These methods provide information about molecular weight, chemical composition, thermal behavior, and mechanical properties.
Environmental Impact: Due to the widespread use of polymers and their resistance to degradation, the disposal of plastic waste has become a significant environmental concern. Efforts are being made to develop biodegradable and sustainable polymers, as well as improve recycling processes to reduce the environmental impact of polymer waste.
Overall, polymers are versatile materials with a wide range of applications and properties. They have revolutionized various industries and continue to play a vital role in technological advancements and everyday life.
NCERT Chemistry Class 12th Solution PDF - Polymers Chapter Download
Candidates can check and download here NCERT Chemistry class 12 solution for Polymers PDF. The chapter's solution is prepared by the subject experts and are easy to understand. Polymers is an important chapter and many questions are asked from this chapter in class 12 board exams as well as JEE Mains.
Download Here: NCERT Solution for Class XII Chemistry Polymers PDF
Polymers Solutions
| Intext Q 15.1 What are polymers? |
| A 15.1 Polymer=Poly + Mer Poly means “many” and “Mer” means unit or part. A polymer is a large molecule which is formed by linking repeating structural units. The structural units are generally simple molecules and they are linked by a covalent bond to form a polymer. 
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| Intext Q 15.2 Write the names of monomers of the following polymers: |
| A 15.2 Polymers are classified based on structure, into 3 types:
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| Intext Q 15.3 Classify the following as addition and condensation polymers: Terylene, Bakelite, Polythene, Teflon. |
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| Intext Q 15.4 Explain the difference between Buna-N and Buna-S. | ||||||||
| A 15.4
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Commonly asked questions
15.5 Arrange the following polymers in increasing order of their intermolecular forces. Nylon 6,6, Buna-S, Polythene.
15.6 Explain the terms polymer and monomer.
15.1 What are polymers?
15.2 Write the names of monomers of the following polymers:
15.3 Classify the following as addition and condensation polymers: Terylene, Bakelite, Polythene, Teflon.
15.4 Explain the difference between Buna-N and Buna-S.
15.7 What are natural and synthetic polymers? Give two examples of each type.
15.8 Distinguish between the terms homopolymer and copolymer and give an example of each.
15.9 How do you explain the functionality of a monomer?
15.10 Define the term polymerisation.
15.11 Is ( NH-CHR-CO )n , a homopolymer or copolymer?
15.12 How can you differentiate between addition and condensation polymerisation?
15.13 Explain the term copolymerisation and give two examples.
15.14 Write the free radical mechanism for the polymerisation of ethene.
15.15 Define thermoplastics and thermosetting polymers with two examples of each.
15.16 Write the monomers used for getting the following polymers. (i) Polyvinyl chloride (ii) Teflon (iii) Bakelite
15.17 Write the name and structure of one of the common initiators used in free radical addition polymerisation.
15.18 How does the presence of double bonds in rubber molecules influence their structure and reactivity?
15.19 Discuss the main purpose of vulcanisation of rubber.
15.20 What are the monomeric repeating units of Nylon-6 and Nylon-6,6?
15.23 How is dacron obtained from ethylene glycol and terephthalic acid?
15.24 What is a biodegradable polymer? Give an example of a biodegradable aliphatic polyester.
15.21 Write the names and structures of the monomers of the following polymers: (i) Buna-S (ii) Buna-N (iii) Dacron (iv) Neoprene
15.22 Identify the monomer in the following polymeric structures.
Chemistry Ncert Solutions Class 12th Exam
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