Which compound form linear polymer … Which one of the following is an example of thermosetting polymer . • a) polystyrene b) polyolefins c) nylons d) phenolic resins View Answer. Which of the following statements is correct about the polymer … Which of the following monomers form biodegradable polymers? (A) Bakelite (B) PVC (C) Nylon 6 , 6 (D) Buna- S . False. Curing is induced by heat or suitable radiation and may be promoted by high pressure, or mixing with a catalyst. These cannot be reused. Question from Polymers,jeemain,aipmt,chemistry,cbse,unit5,class12,organic-chemistry-polymers,q38,medium Bakelite is an example of thermosetting polymer. It is a thermosetting  polymer because it has cross linked structure. Which of the following is a biodegradable polymer? Log in. Bakelite is thermosetting phenol formaldehyde resin formed by an elimination reaction of phenol with formaldehyde. with reinforcement base materials such as glass, linen and graphite. - Step growth, Copolymer. It is used to make floor tiles, kitchenware and fire resistant fabrics. These polymers which are in the soft solid or viscous state on heating undergo extensive cross-linking in moulds and become irreversibly hard as well as insoluble products. Performance & security by Cloudflare, Please complete the security check to access. The terms thermoplastic and thermoset stand for how a material is or can be processed under a changed temperature [1]. Option 1) Option 2) Option 3) Option 4) If you are at an office or shared network, you can ask the network administrator to run a scan across the network looking for misconfigured or infected devices. A) Polyethylene. Thermosetting plastics are prepared from low molecular mass semi-fluid substances. This course will help student to be better prepared and study in the right direction for JEE Main.. Take chapter-wise, subject-wise and Complete syllabus mock tests and get an in-depth analysis of your test.. Thermosoftening plastics have no cross links between the polymer molecules. Which one of the following is not a condensation polymer? NCERT P Bahadur IIT-JEE Previous Year Narendra Awasthi MS Chauhan. Which of the following plastics do not have cross-links between their polymer chains asked Jun 20 in Chemistry by BhratJha ( 44.3k points) synthetic fibers and plastics Report an issue . Tech Companion - A Complete pack to prepare for Engineering admissions, MBBS Companion - For NEET preparation and admission process, QnA - Get answers from students and experts, List of Pharmacy Colleges in India accepting GPAT, Why does a tightly closed metal lid of a glass bottle can be opened more easily if it is put in hot water for some time? Learn vocabulary, terms, and more with flashcards, games, and other study tools. Which one of the following is not a condensation polymer? Question 35. Which compound form linear polymer due to H-bond? epoxy. Your IP: 185.37.71.44 A) Starch. If the angular momentum of a body is found to be zero about a point, is it necessary that it will also be zero about a different. The chain growth process is usually much slower than the condensation process. polystyrene. Some common examples are bakelite, urea-formaldelyde resins, etc. A thermosetting polymer which is also known as a thermoset or thermosetting plastic is a polymer consisting of cross-linked structure or heavily branched molecules. A. Dacron B. Neoprene C. Melamine D. Glyptal 2. - wherein. homopolymer. (A) -(CH2 - --CI big| C = C H - C H2)n- (B) Image B (C) Image C (D) Im A. polyethylene B. a linear polymer C. a branched polymer D. a cross-linked polymer A cross-linked polymer is an example of a thermosetting polymer. False. We have provided Synthetic Fibres and Plastics Class 8 Science MCQs Questions with Answers to help students understand the concept very well. answer choices . Tags: Question 2 . Glyptal polymer is obtained from glycol by reacting with (a) malonic acid (b) phthalic acid (c) maleic acid (d) terephthalic acid. Melamine is a thermosetting plastic which is resistant to fire and can tolerate heat better than other plastics. Iso-butene. True. Bakelite is an example of the thermosetting polymer. Which of the following polymer types is more amenable to recycling? Answer. (a), (b), (c), and (g). 500+ VIEWS. epoxy. MEDIUM. B) Plastics. Thermosetting polymer,bakelite is formed by the reaction of phenol with (a) CH 3 CH 2 CHO (b) CH 3 CHO (c) HCHO (d) HCOOH. Bakelite is a thermosetting plastic which is a poor conductor of heat and electricity. Answer. thermosetting polymer. polyethylene. True. Thermoplastics are 1) Linear polymers 2) Soften or melt on heating 3) Molten polymer can be moulded in desired shape AMU 2018. As the temperature of an amorphous polymer decreases from the liquid state, the polymer changes from liquid to rubbery. D) Proteins _____ 5. This temperature is called which one of the following Books. Answer: d Explanation: Phenolic resins falls under the clan of thermosetting polymers and rest are thermoplastic polymers which can be … Physics. Which of the folloiwng are characteristics of thermosetting polymers? THERMOSETTING POLYMER. It is used to make electrical switches and handles of utensils. NEET Organic Chemistry Polymers questions & solutions with PDF and difficulty level Biology. You can refer to NCERT Solutions for Class 8 Science Chapter 3 Synthetic Fibres and Plastics to revise the concepts in the syllabus effectively and improve your chances of securing high marks in your board exams. Which of the following is a biodegradable polymer? Synthetic Fibres and Plastics Class 8 MCQs Questions with Answers. Tags: Question 17 . addition polymer. answer choices . Thermoplastics and thermosetting polymers are types of plastic that undergo different production processes and yield a variety of properties depending on the constituent materials and production method. True. Which one of the following is an example of a thermosetting polymer? As a leader in reaction injection molding (RIM) and resin transfer molding (RTM), Osborne Industries has the capability to work with a number of different thermosetting plastics: Answer. Within the class of thermosetting polymers, there are a number of different types of material that each serve unique purposes and applications. (b). The chain growth process is usually much slower than the condensation process. It is often generated by the reaction of the resin with a curing agent (catalyst, hardener). Thermoset plastics contain polymers that cross-link together during the curing process to form an irreversible chemical bond. polyethylene. Which of the following is an example of a synthetic polymer? 60 seconds . The thermosetting polymer is bakelite please add as a brainliest answer 1. 1. Which one of the following is an example of a thermosetting polymer? Tags: Question 2 . Which of the following is an example of a thermosetting polymer? The main physical difference is how they respond to high temperatures. Heat is not necessarily to be applied externally. (A) Bakelite (B) PVC (C) Nylon 6 , 6 (D) Buna- S . SURVEY . Tags: Completing the CAPTCHA proves you are a human and gives you temporary access to the web property. Eg:- Bakellite, Urea, Formaldehyde, Resin, etc . Join now. A. polyethylene B. a linear polymer C. a branched polymer D. a cross-linked polymer MEDIUM. Before the thermosetting plastic cures it is malleable Question 36. 9. Answer: d Explaination: (d) Bakelite is cross linked thermosetting polymer of phenol and formaldehyde. D) A Cross-Linked Polymer _____ 4. Thermosetting polymer,bakelite is formed by the reaction of phenol with (a) CH 3 CH 2 CHO (b) CH 3 CHO (c) HCHO (d) HCOOH. 7. Which of the following is a thermosetting polymer? - Novolac is linear Start studying CH 8: Polymers. MCQs Of Polymer chemistry 1. terylene. Neoprene rubber are thermoplastic polymers. Which of the following is thermosetting polymer (a) Neoprene (b) PVC (c) Nylon-6,6 (d) Bakelite. Thermosetting polymer composites are made using a laminating process, which binds together resins such as epoxy, silicone, melamine, etc. 7. Answer: 1 question Which of the following can be classified only as a thermoplastic polymer? Some common examples are polysiloxanes, bakelite, urea- formaldehyde resins, etc. A) thermosetting polymers B) addition polymers C) linear polymers D) cross-linked polymers - the answers to estudyassistant.com Some common examples are … thermosetting polymer synonyms, thermosetting polymer pronunciation, ... * Dynamic Matter LLC: UV curable thermosetting polymer that can be remolded, relax stress, or repurposed following polymerization for use in optical applications and composites to reduce shrinkage and environmental stresses; These polymers are cross linked or heavily branched molecules, which on heating undergo extensive cross linking in moulds and again become infusible. Question 35. Tags: Question 18 . Copyright © 2020 Pathfinder Publishing Pvt Ltd. Help me answer: Which of the following is a thermosetting polymer? Teflon is a thermoplastic material and is much similar in structure to that of polyethylene but due to the strong C-F bond, its melting point goes high to 326°C. Melamine and Bakelite are both thermosetting plastics. Rest all are thermoplastic polymer. Q. As temperature continues to decline a temperature is reached at which the material becomes hard and brittle. 18: Which is used in formation of nylon-66? This question has multiple correct options. Tags: C) A Branched Polymer. Another way to prevent getting this page in the future is to use Privacy Pass. Phenol formaldehyde resin/ Bakellite/ Novolac - - Obtained by the condensation reaction of phenol with formaldehyde. Q. 500+ SHARES. Among the following, the weakest inter-particle forces of attraction are present in 1) Thermosetting polymers 2) Thermoplastic polymers 3) Fibres 4) Elastomers 33. Thermosetting Polymers - They are highly cross - linked, hard, infusible and insoluble polymers.They cannot be reused. Check Answer and Sol [NH(CH 2)NHCO(CH 2) 4 CO] n. co-polymer. The polymers which once hardened can not be soften again are called Thermosetting polymer. (i) Heavily branched cross linked polymers. Semicrystalline thermoplastics are formed above their. It can cure because of heating, owing to a chemical reaction, or following irradiation like processing by means of electronic beams. It is used to … Among the following, the weakest inter-particle forces of attraction are present in 1) Thermosetting polymers 2) Thermoplastic polymers 3) Fibres 4) Elastomers 33. C) Cellulose . Melamine is a thermosetting plastic which is resistant to fire and can tolerate heat better than other plastics. Choose the correct option in the following questions: Melamine resists fire and can tolerate heat better than other plastics. Which of the following polymer can be formed by using the following monomer unit? Which one of the following is an example of a thermosetting polymer? The cross-linking process eliminates the risk of the product remelting when heat is applied, making thermosets ideal for high-heat applications such as electronics and appliances. 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