Bakelite & Polyurethane. 1. Condensation Polymerisation:- The Polymerisation reaction in which the polymer is formed by the condensation of two or more monomer is called condensation Polymerisation. 3. synthesis polymers:- buna-s, buna-r, nylon, polythene, polyester. The word polymer comes from two Greek words: poly, meaning many, and meros, meaning parts or Important Questions for Class 12 Chemistry Chapter 15 Polymers Class 12 Important Questions Polymers Class 12 Important Questions Very Short Answer Type Question 1. Condensation Polymers Be the first to write the explanation for this question by commenting below. We will also discuss some questions related to addition and condensation polymers in the Frequently Asked Questions (FAQ) section later. Step-growth polymerizations can be divided into two lasses: condensation and addition polymerization. Because the ionic strength of urine is equivalent to an 0.1 M NaCl solution, this superabsorbant polymer, which can be found in disposable diapers, can absorb up to 60 times its weight in urine. natural polymers:- the definition of a natural polymer is a polymer that results from only raw materials that are found in nature. (Delhi, All India 2009) Answer: Buna-S, Buna-N. 1 In the case of a condensation reaction, two monomers combine with the loss of a small molecule, usually an alcohol, a water or an acid molecule, whereas an addition reaction involves only the rearrangement of the electrons of a double bond to form a single bond with another molecule. Example: Teflon, polyethylene, PVC polymers have the same empirical formula as their monomers. A polymer is a large molecule that is made up of repeating subunits connected to each other by chemical bonds.Do you need some examples of polymers? examples of addition polymers are polyethylene and Teflon. Correct Answer: Nylon 6,6, dacron. Examples – Teflon, Nylon 6,6 , Synthetic rubber (Buna – S) etc. A polymer is a substance made of many repeating units. (i) addition polymers :Polyvinyl chloride, Polythene. Polyamides, polyesters, phenol-formaldehyde polymers and melamine-formaldehyde polymers are all important condensation polymers. In these polymerisation reactions, the elimination of small molecules such as water, alcohol, hydrogen chloride, etc. When a condensation reaction involves polymerization, we call it condensation polimarization. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Examples of condensation polymers are Nylon-6, 6, Dacron, Nylon 6 etc. Part 7: The Mechanism of Condensation Polymerization You know that monomers that are joined by condensation polymerization have two functional groups. Therefore it is also called step growth polymerisation. Click to know more. PVC (polyvinyl chloride), which is found in plastic wrap, simulated leather, water pipes, and garden hoses, is formed from vinyl chloride (H 2 C=CHCl). Students can solve NCERT Class 12 Chemistry Polymers MCQs Pdf with Answers to know their preparation level. Condensation polymer among the following is - (a) Teflon (b) Polystyrene (c) PVC (d) Dacron Condensation polymers The condensation polymers are formed by repeated condensation reaction between two different bi-functional or tri-functional monomeric units. B. monopolymer. Teflon is homopolymer of monomeric units of tetra-fluoro-ethene. In condensation polymerisation, a small molecule is formed as a by-product each time a bond is formed between two monomers. Ans. Example of thermoplastic: PVC & Nylon. Examples – Cellulose, starch, etc. A. copolymer. • Contain branched chains which decrease the density (less pack). This polymer can absorb 800 times it own weight of distilled water, but only 300 times its weight of tap water. Polymers MCQs: MCQs test on 'Polymers' with answers, Test: 1, Total Questions: 15 The polymers obtained by addition polymerization are called addition polymers. Example of polymers which undergoes additional polymerisation. WBJEE 2018: A condensation polymer among the following is (A) Dacron (B) PVC (C) Polystyrene (D) Teflon. C. homopolymer. Write some examples of condensation polymers. Other Addition Polymers. Ans. Give an example of elastomers. Here is a list of materials that are natural and synthetic polymers, plus some examples of materials that are not polymers at all. Download a PDF of this page Science of Plastics Definition Plastics are a group of materials, either synthetic or naturally occurring, that may be shaped when soft and then hardened to retain the given shape. One example of a condensation polymer is A polyethylene B nylon C Teflon D from CHM 102 at American University of Sharjah example:- proteins, cellulose, starch, rubber. High bond energy of C-F bond gives high thermal stability to polymer . Synthetic polymers: Polymers prepared in laboratory. If in the polymerization process only a single type of monomeric unit is used, then the formed polymer is called homopolymer. Example of thermosetting polymer. Explanation: No explanation available. The best example is polymerization of ethylene. Ans. How is Nylon – 6, 6 different from Nylon -6? D. condensation polymer. These chapters cannot be skipped. Check Answer and Solution for above question 2.Classify the following as addition and condensation polymers: Terylene, Bakelite, Polyvinyl chloride, Polythene. Condensation polymers are the result of repeated condensation reactions between two different bi-functional monomers. double bond containing molecule) to one another. Condensation polymers are formed by reaction of bi- or polyfunctional molecules, with the elimination of some small molecule (such … The plastics that have so changed society and the natural and synthetic fibres used in clothing are polymers. 3.What is a biodegradable polymer ? Notice how every other carbon must have a chlorine attached. Answer to Which of the following is a condensation polymer? Some polymers are made via condensation polymerisation. The two major types of polymers are the addition polymers and the condensation polymers. Teflon and Neoprene are the example of: This question has multiple correct options. This condensation can form what are known as multimers or polymers. Free PDF Download of CBSE Chemistry Multiple Choice Questions for Class 12 with Answers Chapter 15 Polymers. Let's look at a few common examples of condensation polymers. (Delhi, All India 2009) Answer: […] Give an example of a biodegradable aliphatic polyester. Semi synthetic polymers: Polymers derived from naturally occurring polymers by carrying out chemical modifications. 10. *Addition polymerization -The addition polymerization means that two monomers react with each other and no other small molecules are generated. Monomer Polymer Description Ethene Polyethene (PE) • Low density polyethene (LDPE) • Condition : 200oC and 1200 atm under oxygen. Examples: PVC, polystyrene, Teflon, polyethylene, etc. For example, polythene, Teflon and polyacrylonitrile are homopolymers. The reaction is shown in the graphic on the left. Characteristics of Condensation Polymers 6. Polymers and Biomolecules are very important chapters in JEE Main Chemistry.Generally, 1 question is asked from each chapter, Polymers and Biomolecules, which bears about 8 marks in total. 2. This is almost everything that students need to know about addition and condensation polymers. Polymerization by free radicals: mutation of cells in carcinogens; Teflon; Bakelite; Polyvinyl chloride (PVC) Examples of condensation polymerization. 11. Therefore, their overall weightage in JEE Main is 2-3%. Which is correct example of condensation polymer . Condensation polymerisation produces a distinct functionalized species and is independent of each other. Condensation; Mostly it occurs when there is loss of water or loss of some molecule. Polyamides are polymers … Chemistry MCQs for Class 12 Chapter Wise with Answers PDF Download was Prepared Based on Latest Exam Pattern. (a) Teflon (b) PVC (c) nylon (d) polyethylene . Alcohol Examples of addition polymerization. Large electronegativity difference of 'C' and F makes C-F bond highly polar. Commonly used condensation polymers:-Nylon -PET (polyethene terephthalate) Why is PET considered to be a polyester? What does the part ‘6, 6’ mean in the name nylon-6, 6? Plastics are polymers. ), are called Addition polymer: Addition polymers are those formed when molecules of an alkene monomer add (i.e. 2. semi-synthesis polymers:- cellulose derivatives - cellulose acetate (rayon). Formulas for these will be displayed below by clicking on the diagram. Start studying Chapter 10 Chem Exam 3. Due to symmetry of F 2 C = CF 2 and strength of C-F bond , branching does not take place and a linear chain teflon is always formed. take place. -It requires two like molecules. Examples – Rayon (cellulose acetate), cellulose nitrate, etc. The process can be represented as follows: + + + Branched + + + Linear 2. Condensation Polymerization - Condensation polymerization is a form of a step-growth polymerization where smaller molecules or monomers react with each other to form larger structural units (usually polymers). Condensation polymers: The polymers which are formed by intermolecular condensation reaction through functional groups of monomers with continuous elimination of by products (water, alcohol, hydrogen chloride etc. Question 2. Answer. Related Questions: Syngas is a mixture of Chemical reaction - Chemical reaction - Polymerization reactions: Polymers are high-molecular-weight compounds, fashioned by the aggregation of many smaller molecules called monomers. MEDIUM. Because it is a polymer that contains the ester functional group it it's main chain. (ii) condensation polymers: Terylene , Bakelite. Options (a) Nylon, buna-S (b) Teflon, buna-N (c) Nylon 6,6, dacron (d) Neoprene, buna-S. Some examples of common condensation polymers are polyacetals, proteins, and polyamides. Examples of naturally occurring condensation polymers are cellulose, the polypeptide chains of proteins, and poly(β-hydroxybutyric acid), a polyester synthesized in large quantity by certain soil and water bacteria. 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