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A) PVC B) Polythene C) Bakelite D) None of these 19. Related Articles. They also have very weak Van der Waals’ forces holding the various chains of elastomers together. Some examples include, bakelite and melamine formaldehyde resin. Check Gujarat Board Released Question Banks for JEE Main. & Bakelite is a very poor conductor of heat and electricity and it is used for making electrical switches. This question hasn't been answered yet Ask an expert . difference between molecularity and order of a reaction . View desktop site, The answer is option B Thermoset polymer: Because they are the materials which remain in solid state even after cooling.They perform an irreversible bonding compared to others,Some are stored in the f, Bakelite is an example of polymer. Answer: (d) thermosetting You may need to download version 2.0 now from the Chrome Web Store. Melamine is resistant to fire and is hence used for making utensils. Polyacrylonitrile is an example of (a) addition polymer (b) condensation polymer (c) natural polymer (d) None of these. State True or False: Thermoplastic can be softened on heating and moulded repeatedly. Bakelite was patented on December 7, 1909. Thermoplastics can be re-melted and re-shaped any number of times. Curing is induced by heat or suitable radiation and may be promoted by high pressure, or mixing with a catalyst.Heat is not necessarily to be applied externally. Bakelite, trademarked synthetic resin invented in 1907 by Belgian-born American chemist Leo Hendrik Baekeland. This is not expensive comparatively Thermoplastic. Polyethylene, polypropylene, polyvinyl chloride, polystyrene, polybenzimidazole, acrylic, nylon and Teflon are examples of thermoplastics. 9. Recently, thermoset plastics and resins have emerged as an attractive alte 10. 19: Which of the following has ester linkage? Question 11. An example of thermoplastic is Polythene. Classification of Polymers Based on Intermolecular Forces Elastomers. Multicolor Thermoplastic Resin. Permanently hardening or solidifying on being heated. Select one: Elastomers O Thermoset Thermoplastic Composite Question 16 Not yet answered Marked out of 1.00 P Flag question The following figure represents Face Centered Cubic structure Select one: True O False, mechanical engineering questions and answers. Thermoplastics can be drawn into fibers, films or packaging. They have a very weak intermolecular force of attraction among the polymer chains. Examples of thermosetting plastics are- melamine- used for making fire ressistant fabrics and floor tiles. Thermoplastic vs. Thermoset Why thermoplastic and thermoset materials in injection molding perform differently from each other. Photo: MrBreakfast.com . Plastic is a very generalized term for polymers that can mean either a thermosetting or a thermoplastic Plastic. 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. Examples include polythene, polystyrene. 20 Polymerization in the simplest form can be described as a chemical process that results in the formation of polymers. Bakelite is an example of (a) elastomer (b) fibre (c) thermoplastic (d) thermosetting. These are reactive molecules and are usually linked to each other by covalent bonds. b) Plastic bag, … Bakelite and melamine are examples of thermosetting plastic. Bakelite or polyoxybenzylmethylenglycolanhydride was the first plastic made from synthetic components. They are usually stored in the form of pellets prior to the molding process. • You May Also Like: Difference Between Vaporization and Evaporation; Difference Between Orbit and Orbitals; Facebook Twitter Pinterest Reddit WhatsApp. Bakelite is an example of thermosetting plastic which means it cant be remoulded into different shapes and sizes. 20 Examples of Physical and Chemical Changes. Thermosetting polymer, Bakelite is formed by the reaction of phenol with: 15: Which compound form linear polymer due to H-bond? 11. Polyethylene is the thermoplastic used in Ziploc storage bags. • Choose the correct answer: Example of thermosetting plastic is . Typical examples of the structure of a thermoplastic elastomer includes a type in which a hard segment and a soft segment are alternately present in a copolymer chain as disclosed in Japanese Patent Application Kokai No. The first statement says -' Bakelite is a thermoplastic' which is incorrect Select One: Elastomers O Thermoset Thermoplastic Composite Question 16 Not Yet Answered Marked Out Of 1.00 P Flag Question The Following Figure Represents Face Centered Cubic Structure Select One: True O False. Question: A) (3 Points) What Is The Molecular Difference Between Thermosetting And Thermoplastic Resins? Completing the CAPTCHA proves you are a human and gives you temporary access to the web property. Thermoplastic polymers are linear (slightly branched) long chain polymers, which can be repeatedly softened and hardened on heating. This is expensive. Terms Bakelite Is An Example Of Polymer. ting (thГ»r′mЕЌ-sД•t′ĭng) adj.

Few examples of thermosetting plastics are: phenolic resins, epoxy resins, amino resins, melamine, Bakelite. Question: Bakelite Is An Example Of Polymer. Please enable Cookies and reload the page. Hence, they can be modified again and again. State True or False: Polymers the small units used in making synthetic fibers. The creation of a synthetic plastic was … A thermosetting polymer, resin, or plastic, often called a thermoset, is a polymer that is irreversibly hardened by curing from a soft solid or viscous liquid prepolymer or resin. bakelite- used for making cookware, insulated handles of utensils and dinner set. Cloudflare Ray ID: 607553f27e204084 Thermoplastic is a type of a polymer which can be easily melted by providing heat in order to recycle the material. Preview this quiz on Quizizz. If you are on a personal connection, like at home, you can run an anti-virus scan on your device to make sure it is not infected with malware. A) true B) false 18. Many thermoplastic materials are addition polymers; e.g., vinyl chain-growth polymers such as polyethylene and polypropylene The literature on thermoplastics is huge, and can be quite confusing, as the same chemical can be available in many different forms (for example, at different molecular weights), which might have quite different physical properties. Which of the following characteristics does not affect the properties of plastics? Privacy what  are the wide range of synthetic or semi-synthetic organic compounds that are malleable and so can be molded into solid objects They are also referred to as macromolecules. An example of thermoplastic is polythene. The catalyst used in the manufacture of polythene by Ziegler method is Your IP: 46.101.6.187 A hard, infusible, and chemically resistant plastic, Bakelite was based on a chemical combination of phenol and formaldehyde (phenol-formaldehyde resin), two compounds that were derived Thermosetting polymers are cross-linked or heavily branched polymers which get hardened during the molding process. Cooking an omelet is an apt analogy that illustrates how thermoplastics and thermosets can be differentiated based on how they perform in the presence of heat. 61-34,050 or the like. Which of the following represents the example of homopolymer? ... Few examples of thermosetting plastics are phenolic resins, epoxy resins, amino resins, melamine, Bakelite. It is formed by the addition of polymerization. Question 10. Understand the Key Differences Between Thermoplastic and Thermosetting Plastic with detailed explanations and examples. There is no confusion at all in this Thermoplastics can be remoulded agian and agian whereas thermosetting plastics cannot be remoulded agian and agian. Bakelite is used for making electrical switches and switchboards because it is a poor conductor of heat and electricity. Henry Ford made his own deadly version of Bakelite by mixing phenol, formaldehyde and defatted soybean meal which reacted to create a thermoplastic resin that could be molded under pressure to create durable nonstructural plastic parts, such as radio knobs, light switch pulls, distributor caps, body trim, etc. © 2003-2020 Chegg Inc. All rights reserved. Used of … Bakelite is an example of polymer. Answer. A) true B) false 20. (a) PMMA (b) Nylon- 6, 6 (c) Dacron (d) Bakelite. Select one: O Thermoplastic O Thermoset O Elastomers O Composite Polymers are generally formed by the addition of a network of structural units or small molecules called monomers. These monomers add together to form a long chain to form a product with spe… An example of thermosetting Plastic is Bakelite. Thermosetting Plastic is formed by condensation polymerization. Thermo-softening plastic, or thermoplastic, becomes soft and flexible at a certain temperatures and solidifies on cooling. The term polymer means large molecules with higher molecular mass. 18: Which is used in formation of nylon-66? An example of Thermosetting plastic is Bakelite. Another way to prevent getting this page in the future is to use Privacy Pass. Performance & security by Cloudflare, Please complete the security check to access. Electron Affinity … 16: Three dimensional molecules with cross links are formed in the case of a _____ 17: Which is not polymer? It is a thermosetting phenol formaldehyde resin, formed from a condensation reaction of phenol with formaldehyde. i need fast solve please. Expert Answer . These plastics cannot be softened again on heating. Thermoplastic commonly referred to as thermoplastic polymers are polymers that can be repeatedly heated and molded without effecting any change in their chemical or physical properties. | Thermoset plastics are frequently used for sealed products due to their resistance to deformation and are also among some of the most impact resistant plastics available. 17. It deforms at high temperatures. Bakelite is an examples of a. Thermoplastic polymer b. Thermosetting polymer c. Elastomer d. Resin - 7007379 It was developed by the Belgian-American chemist Leo Baekeland in Yonkers, New York, in 1907. Show transcribed image text. This question has n't been answered yet Ask an expert ) PMMA ( B Polythene. 17: which of the following characteristics does not affect the properties of plastics and tiles... Recently, thermoset plastics and resins have emerged as an attractive alte Multicolor thermoplastic.... These monomers add together to form a product with spe… which of the has. 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