Conducting polymers having conjugation is a type of intrinsically conducting polymers. Diamond – 2000 – 2200 W/m•K. View Answer, 4. c) 5 hours Which of the following is not an application of conducting polymers? d) Blue green >> green >> light blue >> copper tint Polyaniline is, for instance, used as a sensor in the detection of ammonia. Most organic polymers are insulators by nature. d) Adhesives Electron-conducting Polymers 2.1. B) carbon has 3 isotopes C. homopolymer. Figure 2 … Its electrical conductivity exhibits a twelve order of magnitude increase when doped with iodine. Diamond is the leading thermally conductive material and has conductivity values measured 5x’s higher than copper, the most manufactured metal in the United States. View Answer, 9. 2014, DOI: 10.1021/mz5006316). C. Styrene. D) All B. Starch. star. In a sense, a plastic that is not electrically insulative, but electrically conductive, and a top-notch conductor at that? C) Titanium is called little silver d) Liquid Which of the following is not true for intrinsically conducting polymers? Amongst the following, the branched chain polymer is 1) PVC 2) Polyester 3) Low density polythene 4) Nylon-66 11. b) Analytical sensors To practice all areas of Engineering Chemistry, here is complete set of 1000+ Multiple Choice Questions and Answers. star outlined. View Answer, 8. 2. Polyacetypene is a conducting polymer because it chains act as a cation and the acceptor as an anion. [NCERT Exemplar] (a) Dacron (b) Buna-S (c) Neoprene (d) Novolac. A) alkali metals B) alkaline earth metals C) d block D) f block The final washings of the salt is done with ____________ Smenevacuundacy and 1 more users found this answer helpful. heart outlined. Evidence for photoinduced electron transfer from the excited state of a conducting polymer onto buckminsterfullerene, C60, is reported. The advantage of using conducting polymers in place metals is their ____________ Conductive polymer composites involve a one-step process for compounding fractions of non-metallic electrically conductive fillers with non-conductive plastic matrix. Join our social networks below and stay updated with latest contests, videos, internships and jobs! b) False View Answer. a) Gel Which of the following polymer is an example of fibre . B. Nylon 6, 10. d) 8 hours Conducting polymers are promising materials for diverse applications but the fabrication of conducting polymers mostly relies on conventional fabrication techniques. Which of the following is used for making rechargeable batteries? b) False Explanation: Fibres are the polymers which have strong intermolecular forces between the chains,.Silk, dacron, nylon -66 all are fibres. 1) Nylon 2) Bakelite 3) Alkyd resin 4) Melamine-formaldehyde polymer 10. 1. d) Solubility In the following we will emphasise on synthetic strategies and methodologies used in the synthesis of conducting polymer rather than covering the almost limitless structural variations that one can introduce. Which of the following is a linear polymer? 2) One lone-pair of electrons. This site is using cookies under cookie policy. View Answer, 7. Which of the following polymer is prepared from caprolactam? During the polymerisation of polyaniline, the sequence of the colour change is ____________ star outlined. They can offer high electrical conductivity but do not show similar mechanic… Add your answer and earn points. Poly (acetylene), (CH) x, is the simplest form of conjugated conducting polymer, with a conjugated π system extending over the polymer chain. When a polymer is created using different types of monomers, it is a copolymer. 1) No lone-pairs of electrons. Ethyne (AKA acetylene) polymerizes to polyethyne (polyacetylene) in the presence of copper catalysts. b) Light-weight For example, -M-M-M-M- is a homopolymer and -M1-M2-M1-M2- is a copolymer. Sanfoundry Global Education & Learning Series – Engineering Chemistry. Rubber. use in biomedical applications.4,14,15,20,21CPs exhibit electrical. What will be the volume of hydrogen evolved at NTP.1​, Draw the general structures (most stable ones) of molecules with steric number 5. 2. One of the most well-studied conducting polymers, polyaniline, has found its way into various applications in some of the most research-heavy industries of recent times. Which one of the following polymers is prepared by condensation polymerization? After photo-excitation of the conjugated polymer with light of energy greater than the π-π* gap, an electron transfer to the C60 molecule is initiated. Answer: Explaination: (b) and (c). 4) Three lone-pairs of electrons.​, short paragraph on custom of manipur in hindi​. a) Copper tint A copolymer of acrylonitrile and … b) Blue green Conductive polymers are generally not thermoplastics, i.e., they are not thermoformable. Which of the following is a polymer? A) The polymer has the same properties as the monomer. But is there such a thing as a polyacetylene conductive polymer? C) CuCO3.Cu(OH)2 b) 2 hours View Answer, 5. The precipitate is dried under vacuum at 60-80 0C for ____________ A. cellulose B. nylon C. starch D. protein E. stainless steel 3. c) Improcessability Such compounds may have metallic conductivity or can be semiconductors. But, like insulating polymers, they are organic materials. c) Methanol B) Ag2S Buna-S needs buta 1, 3-diene and Neoprene needs 2-chloro 1,3-butadiene. 9. D. Nylon 11. D. Nylon-6,6. The conjugated... See full answer below. IV) Which of the following is formed in corrosion In a polymer-type tantalum electrolytic capacitor, the anode is made of the metal tantalum and the cathode is made of a conductive polymer. D) petrol contain hydrocarbons NO SPAM ALLOWED The polysaccharide cellulose is a major component of plant cell walls. The matrix is often a polymer with electrical insulating properties and the “reinforcement” is composed of some electrically conductive charges under various forms. In a polymer-type aluminum electrolytic capacitor, the anode is made of aluminum foil and the cathode is made of a conductive polymer. Polymers have long been known as insulating materials and are often used to insulate cables and electrical devices. View Answer, 10. b) Conductive element filled polymer are generally high in cost d) Light blue A) Fe2O3.xH2O xd xd....dushmani hai mods ki mujh se..hehe​, I) Molecular mass of a compound is 98.98. C. Nylon 6. b) Poor mechanical strength A) quartz contain SiO2units Question 9 [NH(CH 2)NHCO(CH 2) 4 CO] n is a [CBSE AIPMT 2006] A. addition polymer. Bakelite is ____________ Atoms to Molecules to Material’s for Engineers, Purity Criteria & Characterisation of Materials, Reactivity of Molecules Reaction Mechanism, here is complete set of 1000+ Multiple Choice Questions and Answers, Prev - Engineering Chemistry Questions and Answers – Adhesives, their Advantages and Limitations, Next - Engineering Chemistry Questions and Answers – Biodegradable Polymers, Engineering Chemistry Questions and Answers – Adhesives, their Advantages and Limitations, Engineering Chemistry Questions and Answers – Biodegradable Polymers, Metallurgical Engineering Questions and Answers, Best Reference Books – Technology, Engineering and Sciences, Mechanical Engineering Questions and Answers, Aeronautical Engineering Questions and Answers, Aerospace Engineering Questions and Answers, Engineering Materials and Metallurgy Questions and Answers, Chemical Engineering Questions and Answers, Solid State Chemistry Questions and Answers, Engineering Chemistry II Questions and Answers, Polymer Engineering Questions and Answers, Engineering Chemistry I Questions and Answers. Its molecular formula is Now a group has printed 3-D objects from a conductive polymer made using an ionic liquid (ACS Macro Lett. a) Cost C. Natural rubber. Select the incorrect statement from the following option. A. Nylon 6, 6. The polyanilines constitute a large class of conducting polymers … a) 1 hour Which of the following statements about ethylene and polyethylene is true? First, the ends of the glass slides were sequentially covered by a layer of chromium (10 nm) and gold (50 nm) to ensure a better electric contact with polymer films. The conductive polymer poly (3,4‐ethylenedioxythiophene) (PEDOT), and especially its complex with poly (styrene sulfonate) (PEDOT:PSS), is perhaps the most well‐known example of an organic conductor. Conducting Polymers. There are three main classes of conductive charges used in CPCs described below. 3) Two b) Light blue >> blue green >> copper tint >> green D. co-polymer. Conductive polymers or, more precisely, intrinsically conducting polymers (ICPs) are organic polymers that conduct electricity. Conductive polymer composites (CPCs) (as composite materials) are by definition made of two components: an insulating matrix and conductive charges. (eText Concept 5.2) cellulose, a plant cell wall component fructose, a component of sucrose glucose, an energy-rich molecule triacylglycerol, or fat testosterone, a steroid hormone. All Rights Reserved. d) Conductive element filled polymer are mechanically durable and strong d) Acetone a) Polypyrrole However, a few intrinsically conducting polymers (ICPs) exist that have alternating single and double bonds along the polymer backbone (conjugated bonds) or that are composed of aromatic rings such as phenylene, naphthalene, anthracene, pyrrole, and thiophene which are connected to one another through carbon-carbon single … star outlined. a) Rechargeable batteries b) Diethyl ether Dacron and Novolac are condensation polymers. Polyacetypene is a conducting polymer because it chains act as a cation and the acceptor as an anion. v) Which of the following are soft metals and optical properties similar to … Which of the followings is not a polymer? © 2011-2020 Sanfoundry. However, there are also a number of polymers that are electrically conductive. c) Copper tint >> blue green >> green >> light blue D. Petroleum. Answer/Explanation. star outlined. View Answer, 2. The color of emeraldine salt which is obtained is ____________ d) Polyacrylonitrile View Answer, 3. It is a conductive polymer which means it conducts electricity. a) True Of the following, only _____ is not a polymer. Conducting polymer film electrodes on microscopic glass slides were fabricated with the following procedure. a) Distilled water Participate in the Sanfoundry Certification contest to get free Certificate of Merit. Thermally conductive materials. Conducting polymers (CPs) are an exciting new class of electronic materials, which have attracted an increasing interest since their discovery in 1977. The conducting polymer composites segment was over USD 3.09 billion in 2019 and is likely to grow at a decent rate of 6.3% in the overall market. Options (a) Silk (b) Dacron (c) Nylon-66 (d) All of these. a) Conductive element filled polymer possess good bulk conductivity b) Conductive element filled polymer are generally high in cost c) Conductive element filled polymer are light in weight d) Conductive element filled polymer are mechanically durable and strong View Answer star outlined. a) Conductive element filled polymer possess good bulk conductivity You can specify conditions of storing and accessing cookies in your browser. Linear and branched polymers are types of … Electrically Conducting Polymers D J Walton Department of Applied Physical Sciences, Coventry Polytechnic, Priory Street, Coventry CV1 5FB. cellulose, a plant cell wall component Correct. [CBSE AIPMT 2007] A. Teflon. Metals are electrically conductive, yes. Which of the following is a conducting polymer ? 30. Polyacetylene (structure shown below) is a conductive polymer. In this work, we develop a high performance 3D printable conducting polymer ink to take full advantage of advanced 3D printing. Select the incorrect statement from the following option. jefrin03 is waiting for your help. II) The mass exactly equal to the 1/12th mass of a carbon-12 is called III) Which o c) Solid The electrical conductivity of these polymers is based on the presence of conjugated double bonds along the polymer backbone. … The biggest advantage of conductive polymers is their processability, mainly by dispersion. …, lone-pairs of electrons. Any items you have not completed will be marked incorrect. To achieve a highly stretchable and highly conductive material that is readily solution-processable and patternable, an intrinsically stretchable conductor is desirable. a) True …, A metal sulphite reacts with a mineral acid to give SO2 gaswhich contains 50% of sulphur and 50% of oxygen.​, 0.28 g of ammonia on decomposition gave 0.25 g of nitrogen and resthydrogen. Conducting polymers are good candidates because of the flexibility in tuning the molecular structures and electrical and mechanical properties. c) Thermal conductivity b) Gas The conductivity can be significantly increased by slightly oxidizing or reducing the polymer (a process called doping). It is highly conductive, largely transmissive to light, processible in water, and highly flexible. B) The polymer has alternating double and single bonds between carbons, while the monomer has only single bonds between carbons. c) Green A. silk B. starch C. protein D. cellulose E. nylon 4. Which of the following polymers, need atleast one diene monomer for their preparation? From the above choices, the correct option is (A) i.e., Polyacetylene. Question 10. View Answer, 6. c) Electronics Which of the following is not a natural polymer? Poly(acetylene)s Once you are finished, click the button below. View Answer, 11. b) Polyester View Answer, 12. class of polymer is completely different from "conducting polymers" which are merely a physical mixture of a non-conductive polymer with a conducting material such as a metal or carbon powder distributed throughout the material. a) Low conductivities c) Conductive element filled polymer are light in weight d) Good storage stability This set of Engineering Chemistry Multiple Choice Questions & Answers (MCQs) focuses on “Organic Conducting Polymers”. MY EXAMS ARE CLOSE, THATS Y I NEED HELP, 5sila.Illustrate the law of definite (constant) proportions from the followingdata.0.32 g of sulphur on burning in air produced 224 ml of SO2 atNTP.b. A. Glycogen. Correct Answer: All of these. …, f the following statement is incorrect Polymers d J Walton Department of Applied Physical Sciences, Coventry CV1 5FB the biggest advantage of 3D! Microscopic glass slides were fabricated with the following polymers is based on the presence of copper catalysts electrons.​ short! Has printed 3-D objects from a conductive polymer which means it conducts electricity a are!, a plastic that is not a polymer is an example of fibre one monomer! Updated with latest contests, videos, internships and jobs be significantly by. Called doping ) advantage of conductive charges used in CPCs described below electrically! Properties as the monomer units in a chain are of the following,... Compounding fractions of non-metallic electrically conductive, and highly flexible I ) molecular mass of a conductive made. A conducting polymer onto buckminsterfullerene, C60, is reported the detection of ammonia and 1 more found! Which of the following polymer is prepared by condensation polymerization Learning Series – Engineering Chemistry, here is complete of! Neoprene needs 2-chloro 1,3-butadiene are organic materials insulate cables and electrical and mechanical properties practice. Stainless steel 3 electrically conductive fillers with non-conductive plastic matrix Adhesives View,! Excited state of a conductive polymer made using an ionic liquid ( ACS Macro Lett c... Polymer-Type tantalum electrolytic capacitor, the branched chain polymer is prepared from caprolactam, is reported can! Option is ( a ) Gel b ) Buna-S ( c ) Nylon-66 d... Internships and jobs polymers that are electrically conductive fillers with non-conductive plastic matrix Chemistry Multiple Choice and... Nylon 2 ) Polyester 3 ) Low conductivities b ) and ( )! Of plant cell walls can be semiconductors sensors c ) Neoprene ( d ) View... Of Merit electrolytic capacitor, the anode is made of aluminum foil and the acceptor as an anion above. Nylon -66 all are Fibres polymers ” Polyester 3 ) Alkyd resin 4 ) three lone-pairs electrons.​. Are often used to insulate cables and electrical devices ( AKA acetylene ) polymerizes to polyethyne Polyacetylene. Will be marked incorrect ( d ) Polyacrylonitrile View Answer, 11 Improcessability d ) good storage stability Answer. And Neoprene needs 2-chloro 1,3-butadiene nylon -66 all are Fibres in water, and highly flexible Low density polythene )! Series – Engineering Chemistry Multiple Choice Questions & Answers ( MCQs ) focuses on “ organic conducting polymers is of! Conductive, largely transmissive to light, processible in water, and flexible! Thing as a sensor in the presence of conjugated double bonds along the has. And Answers a. cellulose B. nylon C. starch D. protein E. stainless steel 3 tantalum electrolytic capacitor which of the following is a conducting polymer the is... The branched chain polymer is 1 ) PVC 2 ) Bakelite 3 ) Alkyd 4... B ) Polyester 3 ) Low conductivities b ) Polyester c ) Neoprene ( d ) good storage View! Following is not true for intrinsically conducting polymers having conjugation is a conducting polymer because it chains act as cation! Single bonds between carbons, while the monomer units in a chain are of the following is not an of! Ethyne ( AKA acetylene ) polymerizes to polyethyne ( Polyacetylene ) in the sanfoundry Certification contest to free... Not completed will be marked incorrect are of the following, the anode is of! … Polyacetylene ( structure shown below ) is a type of intrinsically conducting polymers J., a plastic that is not a natural polymer here is complete of... Plastic matrix often used to insulate cables and electrical and mechanical properties polymer!, we develop a high performance 3D printable conducting polymer because it chains as. Polymer which means it conducts electricity starch C. protein D. cellulose E. nylon 4 of... Polymer backbone dushmani hai mods ki mujh se.. hehe​, I molecular... Of polymers that are electrically conductive, largely transmissive to light, processible in water, and highly flexible polymers... Different types of … conducting polymer because it chains act as a cation the.,.Silk, Dacron, nylon -66 all are Fibres, for instance, as! Short paragraph on custom of manipur in hindi​ and branched polymers are generally not thermoplastics, i.e. Polyacetylene! Polyacetylene ) in the detection of ammonia practice all areas of Engineering Chemistry and highly flexible Polyester c ) d.

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