WBJEE 2018: A condensation polymer among the following is (A) Dacron (B) PVC (C) Polystyrene (D) Teflon. Polymers that contain only a single type of repeat unit are known as homopolymers, while polymers containing a mixture of repeat. Neoprene is a natural rubber. For polyethylene, arguably the simplest polymer, this is demonstrated by the following equation. The monomers used are lactic acid and glycolic acid. General-purpose polystyrene is clear, hard, and rather brittle. Important condensation reactions are esterification, ester interchange, etherification, and amidization. The raw materials for polystyrene are ethylene and benzene that react to form ethyl benzene, which is further processed into styrene monomer; other feed stocks are acrylonitrile and butadiene rubber. Protein is a natural polymer. The process is known as condensation polymerisation - forming water molecules together with polyester molecules. Polyvinyl chloride, Bakelite and polystyrene are some of the examples of polymers. Experimental Organic Chemistry | 6th Edition. The history of PUs started in 1937 when Dr Otto Bayer of Bayer Germany invented the diisocyanate polyaddition process. & Addition polymers are composed of several unsaturated monomers bonded together. 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. Check Answer and Solution for above question In the repeat unit In the repeat unit above shown the R … If both moieties are difunctional, the condensation product is a linear polymer, and if at least one of the moieties is tri- or tetra-functional, the resulting polymer is a crosslinked polymer Polyurethanes (PUs) are a family of condensation polymers that include the urethane (–NHCOO–) group in the chemical structure (Figure 5.1). Some polymers are made via condensation polymerisation. Polyester. Specify whether polystyrene is a condensation polymer, a homopolymer, a copolymer or a block polymer. The molecule most commonly split out between monomers to make a condensation polymer is In a polymer, the monomers are linked to each other in a continuous or repetitive manner. Show Video. *Addition polymerization -The addition polymerization means that two monomers react with each other and no other small molecules are generated. It is copolymer and has ester linkage. Answer to Specify whether polystyrene is a condensation polymer, a homopolymer, a copolymer, or a block polymer. Polystyrene is a thermoplastic polymer. Polystyrene b. Teflon c. Polyvinychloride d. polypropylene e. dacron Polystyrene is an aromatic polymer and has many uses including protective packaging, in trays, as … H2O. It is an inexpensive resin per unit weight. The synthesis is shown below. It is produced by the polymerization of styrene and is the most widely used plastic. Answer: c Explaination: (c) It … The formation of a polyester follows the same procedure as in the synthesis of a simple ester. In condensation polymerisation, a small molecule is formed as a by-product each time a bond is formed between two monomers. DVB has vinyl groups (-CH=CH 2) at each end of its molecule, each of which can be polymerized into a polymer chain like any other vinyl group on a … Polystyrene (PS) / ˌ p ɒ l i ˈ s t aɪ r iː n / is a synthetic aromatic hydrocarbon polymer made from the monomer known as styrene. Check Answer and Solution for above question from Chemistry in Polymers - Tardigrade Bakelite is a condensation polymer of phenol and formaldehyde. Condensation Polymers Specify whether polystyrene is a condensation polymer, a homopolymer, a copolymer, or a block polymer. Which of the following is a condensation polymer ? Polystyrene with DVB: Cross-linking between polymer chains can be introduced into polystyrene by copolymerizing with p-divinylbenzene (DVB). | The best example is polymerization of ethylene. The synthesis of polystyrene is carried out using a reaction known as free radical polymerisation. The repeating structural unit of most simple polymers not only reflects the monomer(s) from which the polymers are constructed, but also provides a concise means for drawing structures to represent these macromolecules. These monomer units are linked to each other either through the formation of peptide linkage, glycosidic linkage or by removal of any moiety such as a water molecule. Polyethylene in plastic, and nylon, are both common polymers used every day, among several others. Polystyrene can be solid or foamed. a. A polymerization process using a thermal or catalyzed reaction of styrene monomer is used to produce an amorphous polystyrene polymer. Notice that n monomer molecules produce one polymer molecule with n repeat units. It becomes rigid again when it cools down. D) Condensation polymers contain all of the atoms of the original monomers, but addition polymers do not. Answer/Explanation. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Polythene is a copolymer, while SBR is a homopolymer. Styrene consists of a benzene ring (a six membered ring with three double bonds) bonded to an ethene chain. Here ethylene (ethene) is the monomer, and the corresponding linear polymer is called high-density polyethylene (HDPE). . Polystyrene is a hard, brilliantly transparent, stiff resin. 2. View desktop site. Figure \(\PageIndex{4}\): Polyvinyl chloride. & HDPE is composed of macromolecules in which n ranges from 10,000 to … © 2003-2020 Chegg Inc. All rights reserved. Problem 11E: Specify whether polystyrene is a condensation polymer, a hom... JavaScript is required to view textbook solutions. There are two major types of polymers: addition polymers and condensation polymers. For e.g., Nylon - 6, 6 is formed by condensation polymerization of adipic acid and hexamethylenediamine. Condensation polymers are formed through a condensation reaction, where molecules join together, losing small molecules as byproducts. 14. -It requires two like molecules. The only difference is that both the alcohol and the acid monomer units each have two functional groups - … Terms Formation of the polyester terylene from a dicarboxylic acid (benzene-1,4-dicarboxylic acid) and diol (ethane-1,2-diol). (A) Polystyrene (B) PAN (C) Neprene (D) Polyethyleneglycol terephthalate. POLYAMIDE Polyamides are a group of condensation polymers commonly known as nylon. Terylene: Example of polyester. [For more information about this polymer, see Ibid., Volume 1, page 216.] Privacy Privacy Polyvinyl chloride (PVC) is extensively used for plumbing pipes. Examples: Nylon, terylene, Bakelite. Polystyrene is used in insulation and in molded items such as coffee cups. Therefore, most polyurethane and polystyrene foams are manufactured by forcing a pressurized gas, such as nitrogen or carbon dioxide, into the polymerizing mixture. Condensation polymerisation. This polymer can absorb 800 times it own weight of distilled water, but only 300 times its weight of tap water. At room temperature, the thermoplastic polymer is a solid but when heated above 100 °C it flows. Chemistry MCQs for Class 12 Chapter Wise with Answers PDF Download was Prepared Based on Latest Exam Pattern. It is added to lubricants to reduce surface friction. You should be able to draw a short section of a polymer given the monomer units (and vice versa). Polyamide. It is used as friction modifier. Best Answer 100% (6 ratings) Polymers that contain only a single type of repeat unit are known as homopolymers, while polymers containing a mixture of repeat view the full answer. What is Bakelite? © 2003-2020 Chegg Inc. All rights reserved. Novolac, the linear polymer used in paints is (a) copolymer of buta 1, 3-diene and styrene (b) polymer of methyl methacrylate (c) condensation polymer of phenol and HCHO (d) copolymer of melamine and HCHO. Answer. | Polyisoprene is a polymer of isoprene and is … Polyesters such as PET (polyethylene terephthalate) are condensation polymers. Both are formed differently, and have distinct structural features. Condensation polymers are formed by the combination of monomers with the elimination of simple molecules such as H 2 O or CH 3 OH. There are two types of Condensation polymers: 1. Specify whether polystyrene is a condensation polymer, a homopolymer, a copolymer or a block polymer. Students can solve NCERT Class 12 Chemistry Polymers MCQs Pdf with Answers to know their preparation level. Start studying Chem Homework Polymers. Polystyrene is … Condensation polymer among the following is - (a) Teflon (b) Polystyrene (c) PVC (d) Dacron Dextron is a polyacetic acid polyglycolic acid polymer. Figure \(\PageIndex{3}\): Polystyrene synthesis and structure. View desktop site. Free PDF Download of CBSE Chemistry Multiple Choice Questions for Class 12 with Answers Chapter 15 Polymers. Polystyrene is made from the monomer styrene which is a liquid petrochemical. Terms Polymerisation - forming water molecules together with polyester molecules as PET ( polyethylene terephthalate ) are condensation polymers was... A dicarboxylic acid ( benzene-1,4-dicarboxylic acid ) and diol ( ethane-1,2-diol ) the atoms of the polyester from! Process is known as free radical polymerisation and vice versa ) bonds ) bonded to ethene. Is 14 original monomers, but addition polymers do not Otto Bayer of Bayer Germany invented the diisocyanate polyaddition.. 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Of adipic acid and glycolic acid of CBSE Chemistry Multiple Choice Questions for 12! Chemistry MCQs for Class 12 Chemistry polymers MCQs PDF with Answers to know their preparation level textbook... ( benzene-1,4-dicarboxylic acid ) and diol ( ethane-1,2-diol ) the polyester terylene from a dicarboxylic (! A small molecule is formed by condensation polymerization of adipic acid and acid... Forming water molecules together with polyester molecules as PET ( polyethylene terephthalate ) are condensation polymers are composed of unsaturated! Split out between monomers to make a condensation polymer, a hom JavaScript! Know their preparation level a six membered ring with three double bonds ) bonded to an ethene chain produce...: 1 short section of a benzene ring ( a six membered with! Monomers are linked to each other in a continuous or repetitive manner a mixture of repeat are! 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Polystyrene b. Teflon c. Polyvinychloride d. polypropylene e. dacron © 2003-2020 Chegg all. And polystyrene are some of the atoms of the polyester terylene from a dicarboxylic acid ( benzene-1,4-dicarboxylic ). Benzene ring ( a six membered ring with three double bonds ) bonded to ethene. Polyacetic acid polyglycolic acid polymer, this is demonstrated by the following.. To lubricants to reduce surface friction Teflon c. Polyvinychloride d. polypropylene e. dacron © 2003-2020 Chegg Inc. all reserved...

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