CBSE Class 12 Chemistry Polymers Notes and Questions

Read and download the CBSE Class 12 Chemistry Polymers Notes and Questions for the 2025-26 academic session. We have provided comprehensive Class 12 Chemistry school assignments that have important solved questions and answers for Unit 15 Polymers. These resources have been carefuly prepared by expert teachers as per the latest NCERT, CBSE, and KVS syllabus guidelines.

Solved Assignment for Class 12 Chemistry Unit 15 Polymers

Practicing these Class 12 Chemistry problems daily is must to improve your conceptual understanding and score better marks in school examinations. These printable assignments are a perfect assessment tool for Unit 15 Polymers, covering both basic and advanced level questions to help you get more marks in exams.

Unit 15 Polymers Class 12 Solved Questions and Answers

 

 

1. Polymer: GIST
 
It is a very large molecule having molecular mass 103 - 107 g mol-1. They are formed by joining together repeating structural units.
 
2. Classification of Polymers:
 
(a) Based On Source:
 
(i) Natural: Found in plants and animals, e.g. Proteins, cellulose, natural rubber, silk, wool.
 
(ii) Synthetic: Man-made e.g. Nylon, polyster, neoprene, Bakelite, Teflon, PVC, polystyrene.
 
(b) Based On Structure:
 
(i) Linear Polymers: this consist of long and straight chain repeating units e.g. Polythene (HDPE), PVC,nylon, polyester.
 
(ii) Branched Polymers: This contain linear chains having some branches e.g. amylopectin, glycogen etc.
 
(iii) Cross Linked Polymers: Strong covalent bonds are present between various linear polymer chains. E.g. Bakelite, urea- formaldehyde polymer, melamine, formaldehyde polymer etc.
 
(c) Based On Mode Of Polymerization:
 
(i) Addition Polymers: These are formed by the repeated addition of monomer molecules possessing multiple bonds, e.g., polythene, polypropene, polystyrene, PMMA (polymethyl metha crylate)
 
(ii) Condensation Polymers: These are formed by the repeated condensation reaction of different bifunctional or trifunctional monomers, with the elimination of small molecules like water,HCL,NH3,alcohol etc. e.g. Bakelite,nylon,polyster,urea- formaldehyde resin.
 
(d) Based On Molecular Forces:
 
(i) Elastomers: Forces of interaction between polymer chains is weakest, e.g. natural rubber, neoprene,vulcanized rubber.
 
(ii) Fibers: Strong hydrogen bonds are present between the polymer chains. They have high tensile strength e.g., nylon.polyster, silk, wool, orlon, rayon etc.
 
(iii) Thermoplastics: They are linear/slightly branched chains molecules capable of repeated softening on heating and hardening on cooling,e.g., polythene,PVC, polystrene, polypropene.
 
(iv) Thermosetting Plastics: They are cross-linked or heavily branched molecules, which on heating undergo extensive cross-linkages and become infusible, e.g., bakelite,urea formaldehyde resin.
 
 (e) Based On Growth Of Polymerization: Depending upon the mechanism of Polymerization, polymers are classified as

(i) Addition Polymers Or Chain Growth Polymers: They follow mostly free radical mechanism.

(ii) Condensation Polymers or Step Growth Polymers because they are formed in gradual steps.
 

Please click on below link to download pdf file for CBSE Class 12 Chemistry Polymers Notes and Questions

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CBSE Class 12 Chemistry Unit 15 Polymers Assignment

Access the latest Unit 15 Polymers assignments designed as per the current CBSE syllabus for Class 12. We have included all question types, including MCQs, short answer questions, and long-form problems relating to Unit 15 Polymers. You can easily download these assignments in PDF format for free. Our expert teachers have carefully looked at previous year exam patterns and have made sure that these questions help you prepare properly for your upcoming school tests.

Benefits of solving Assignments for Unit 15 Polymers

Practicing these Class 12 Chemistry assignments has many advantages for you:

  • Better Exam Scores: Regular practice will help you to understand Unit 15 Polymers properly and  you will be able to answer exam questions correctly.
  • Latest Exam Pattern: All questions are aligned as per the latest CBSE sample papers and marking schemes.
  • Huge Variety of Questions: These Unit 15 Polymers sets include Case Studies, objective questions, and various descriptive problems with answers.
  • Time Management: Solving these Unit 15 Polymers test papers daily will improve your speed and accuracy.

How to solve Chemistry Unit 15 Polymers Assignments effectively?

  1. Read the Chapter First: Start with the NCERT book for Class 12 Chemistry before attempting the assignment.
  2. Self-Assessment: Try solving the Unit 15 Polymers questions by yourself and then check the solutions provided by us.
  3. Use Supporting Material: Refer to our Revision Notes and Class 12 worksheets if you get stuck on any topic.
  4. Track Mistakes: Maintain a notebook for tricky concepts and revise them using our online MCQ tests.

Best Practices for Class 12 Chemistry Preparation

For the best results, solve one assignment for Unit 15 Polymers on daily basis. Using a timer while practicing will further improve your problem-solving skills and prepare you for the actual CBSE exam.

Where can I download in PDF assignments for CBSE Class 12 Chemistry Unit 15 Polymers

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How many topics are covered in Unit 15 Polymers Chemistry assignments for Class 12

All topics given in Unit 15 Polymers Chemistry Class 12 Book for the current academic year have been covered in the given assignment

Is there any charge for this assignment for Unit 15 Polymers Chemistry Class 12

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Are these assignments for Unit 15 Polymers Class 12 Chemistry designed as per CBSE curriculum?

Latest syllabus issued for current academic year by CBSE has been used to design assignments for Unit 15 Polymers Class 12

Are there solutions or answer keys for the Class 12 Chemistry Unit 15 Polymers assignments

Yes, we have provided detailed answers for all questions given in assignments for Unit 15 Polymers Class 12 Chemistry