(c) acrylic Can you write the major difference between these two types of plastics? FALSE; PVC is a thermoplastic. Question 20. Hence, it is a thermosetting ploymer. (a) thermoplastic 11. (b) teflon Bakelite and melamine are thermoplastics. Question 1. Polymer, any of a class of natural or synthetic substances composed of very large molecules that are multiples of simpler chemical units. Fabrics made of polyester do not wrinkle easily. (b) nylon Contact our team today T: 01933 442623 E: info@tool-temp.net W: www.tool-temp.net Inc. Live Chat Continuous temperature & (flow regulation) with accuracy to 1/10th of a ℃ (d) bakelite (b) silk 1. Which of the following is not thermoplastics: Question 28. Question 11. Cellulose is made up of a large number of ………………… units. Thermoplastic softens on heating and then can be moulded into various shapes. Question 15. Give examples which indicate that nylon fibres are very strong. (a) glucose Wire made from which fibre is strongest: known as thermoplastic. Jammu & Kashmir has banned the use of plastic bags. Which of the following once set do not soften on heating: Question 22. Question 3. (b) therniosetting plastic Question 29. (d) melamine (a) thermoplastic Polymer present in wood is: All Rights Reserved. (b) cotton NCERT Class 12 Chemistry Exemplar for Chapter 15 Polymers provide you polymer questions multiple choice, polymer MCQ for NEET, Fill in the blanks, Match the following, True or False, Worksheets, polymers Class 12 important questions, exercises and assignments. True 16. (c) rubber (True Or False) This problem has been solved! (d) rayon. False 2. Question  14. Question 7. (c) protein Question 13. 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. Nylon fibre is used for making nylon parachutes and ropes for rock climbing. Answer the following questions in short: 1. 13. (b) nylon b) Bakelite is a kind of thermosetting plastic which is a bad conductor of heat and electricity. Answer: 1. Silk fibre is obtained from cocoons of the silk moth. Question 2. (True Or False) 2. (d) rubber, (b) cellulose Question 18. Question 12. Rubber and wood are good conductors of electricity. (a) acrylic Wool is a natural fibre obtained from plants. A lot of plastic pollutes our environment. Start studying True /False Industrial. (c) cotton (b) cotton ... Thermoplastic polymer ... (Bakelite) _____ are tough, clear polymers used in protective helmets, safety glasses, and dental crowns. 21. Cotton is natural polymer whereas rayon, polyester and polythene are synthetic polymers. Nylon is synthetic whereas cotton, jute and silk are natural fibres. Question 16. (c) artificial nylon The material on this site can not be reproduced, distributed, transmitted, cached or otherwise used, except with prior written permission of Multiply. The starting monomers of bakelite are phenol and formaldehyde i.e.Bakelite is a thermosetting polymer. ? Telephone instruments can be recycled as it is made up of thermoplastics. Which of the following fibre is natural polymer: Question 16. Soln: On heating, Thermoplastics get deformed and they can be easily bent. Question 6. Examples - Bakelite, Urea-formaldelyde resins • Addition Polymerisation or Chain Growth Polymerisation: Addition polymerisation is called chain growth polymerisation because it takes place through stages leading to increase in chain length and each stage produces reactive intermediates for use in next stage of the growth of chain. (c) rayon The biggest difference between a thermoplastic and thermoset is that a thermoplastic can be recycled. False 14. Question 25. a. GFCI 17. Refuse (avoid) is the best way to manage plastic. Students can solve these Synthetic Fibres and Plastics Class 8 MCQs Questions with Answers and assess their preparation level. do not wrinkle easily. (d) none of these. (b) polyester TRUE ? We have provided Electricity and Circuits Class 6 Science MCQs Questions with Answers to help students understand the concept very well. The first significant application of plastics began with the development of Bakelite™. Question 21. MCQ Questions for Class 8 Science with Answers are prepared as per the Latest Exam Pattern. (ii) chemical molecules synthesized by human. (b) glass HIPS ? If plastics are burnt, they evolve oxygen gas. A synthetic fibre resembling wool is acrylic. Question 19. Plastics which gets deformed easily on heating and can be bent easily are known as …………………, Question 2. ? Melamine is used for making floor tiles, kitchenware etc. We know that bakelite is a thermosetting plastics, which is used for making electrical switches, handles of various utensils, etc. PET is form of: (d) P.V.C. Fruit peels are biodegradable. Synthetic fibres are synthesised from raw material called …………………. Question 10. (d) melamine. (b) polyethylene Most polymers used in 3D printing applications are thermoplastic. (b) polyester and cotton 2. A material which is not easily decomposed by natural processes is termed as …………………. (c) telephone instruments Who is the longest reigning WWE Champion of all time? In lab I made samples that were mounted in bakelite. (c) telephone instruments Bakelite is used for making electrical switches, handles of various utensils etc. (b) thermoplastic (a) rayon Answer: True. Acrylic, polyethylene and polystyrene are thermoplastic. (d) cooker handles. (b) teflon B. True or False : Question 1. (b) fruit peels Polymer present in plants is: Bristles of tooth brush are made from: (b) jute (a) aluminium foil What precautions should you use when working in an area with a large number Hint: Write uses of synthetic polymers like nylon, acrylic, terylene, PET, plastics, etc. Question 14. Question 7. Rayon is made from cellulose obtained from wood pulp. False 10. Acrylic fibres bums with a sooty flame and shrinks to form black beads. Bristles of tooth brush are made from nylon because it is soft, flexible and strong. Polymerization of thermoplastic resin can be accelerated through the use of pressure and heat. Teflon is used to make non-stick cookwares. Nylon was prepared from ……………………., ………………… and ……………………, Question 11. Which of the following statements is false? Answer: Thermoplastic The plastic which gets deformed easily on heating and can bern easily is. Question 8. TRUE ? TRUE ? Question 17. (c) cotton 22. Question 4. (c) wool Question 7. (c) polyester Cotton fibre burns readily with smell of burning paper. Check the below NCERT MCQ Questions for Class 6 Science Chapter 12 Electricity and Circuits with Answers Pdf free download. (d) silk. Question 5. (d) wood Check the below NCERT MCQ Questions for Class 8 Science Chapter 3 Synthetic Fibres and Plastics with Answers Pdf free download. Answer (a) nylon Wire made from nylon fibre is the strongest. We should wear ………………… clothes in the kitchen. True; False, synthetic fibres melt on heating; True ; False, most of the plastics are non biodegradable. (d) polythene. It cannot be reused. PVC (polyvinyl chloride) is a thermoplastic and is used for making toys, chappals, etc. Question 6. True. Can you write the major difference between these two types of plastics? (a) nylon (d) Recover, Question 9. (iv) simple chemical molecules made of single unit. (b) plastic bowls Question 4. Acrylic, polyethylene and polystyrene are thermoplastic. Fabrics made of …………………. (d) nylon A material which gets decomposed through natural processes, such as action by bacteria, is called …………………. Question 9. The main physical difference is how they respond to high temperatures. Melamine (MF) ? Rayon is made from cellulose obtained from wood pulp (plants). When did organ music become associated with baseball? We should wear synthetic clothes while working in the kitchen or in a laboratory. (c) polvthene True 11. (d) wool Synthetic fibres do not absorb …………………, Question 3. A. Cellulose B. Starch C. Rubber D. DNA 15. True or False: Receptacles used on the job site should be protected with a GFCI. Plastics are corrosive in nature. It contributes sturdy structure to the plants. Differentiate between thermoplastic and thermosetting plastics. A. Cellulose B. Starch C. Rubber D. DNA 16. 14. Question 19. Join now. Electric plugs are made up ………………… plastics. Question 30. Which one of the following statements is not true? Learn vocabulary, terms, and more with flashcards, games, and other study tools. (c) polyester (b) cellulose (b) papers PVC (polyvinyl chloride) is a thermoplastic and is used for making toys, chappals, etc. Question 11. (a) broken plastics things PVC (polyvinyl chloride) is a thermoplastic and is used for making toys, chappals, etc. The plastics which when moulded once, can not be softened by heating are called …………………, Question 10. Wood pulp is used for preparation of Rayon. (d) steel. (a) rayon (b) teflon Question 18. (a) rayon (c) nylon I thought that thermosets were "set solid" by a chemical reaction that was irreversible. Natural rubber has the trans-configuration at every double bond. (d) all of these, (d) all of these Hair and muscles are made of proteins. Polymer present in plants is cellulose. (d) nylon Question 4. Aluminium foil is not biodegradable. Question 17. (c) polystyrene Fill in the blanks. Question 20. Synthetic fibres are: (i) chemical molecules formed naturally like silk, cotton etc. (c) polythene (d) wool. (d) polyester and wool (c) acrylic Question 9. Copyright © 2020 Multiply Media, LLC. 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 Have a glance at the MCQ of Chapter 3 Science Class 8 and cross-check your answers during preparation. The terms thermoplastic and thermoset stand for how a material is or can be processed under a changed temperature [1]. Fill in the blanks. Explain the difference between thermoplastic and thermosetting plastics. Wire made from nylon fibre is the strongest. TRUE ? Plastics are man-made materials. Preview this quiz on Quizizz. Most Polymers Used In 3D Printing Applications Are Thermoplastic. 12. Bakelite is a thermosetting plastic. 4. FALSE; Epoxy resin is a thermoplastic? (a) thermosetting plastic The starting monomers of bakelite are phenol and formaldehyde i.e.Bakelite is a thermosetting polymer. The fibre that burns readily with smell of burning paper is: III. Hope the information shared regarding the NCERT MCQ Questions for Class 8 Science Chapter 3 Synthetic Fibres and Plastics with Answers Pdf free download is true and genuine as far as our knowledge is concerned. Bakelite is a thermosetting plastic and is used for making electrical switches, handles of various utensils, etc. Hence, the correct answer is … True B. (a) glucose Wood is a natural substance where as plastics, cement and glass are man-made substances. (c) cotton (b) teflon Which of the following garbage is biodegradable: Wool is obtained from hair of an animal (sheep). (a) strong Cellulose is made up of a large number of glucose units. (b)cotton (b) durable (a) corrosive Current flows from positive terminal of cell to its negative terminal. MCQ Questions for Class 8 Science with Answers were prepared based on the latest exam pattern. (d) none of these. (c) polythene and wool ………………… has anti-stick property and used as a coating on the surface of frying pan. Question 27. True 5. TRUE ? (c) rayon Solving the Synthetic Fibres and Plastics Multiple Choice Questions of Class 8 Science Chapter 3 MCQ can be of extreme help as you will be aware of all the concepts. (c) nylon (b) polyester and cotton ... Bakelite is obtained from phenol by reacting with [AIEEE 2008] A. HCHO. (d) ball point pens. B (CH 2 OH) 2. Food items are stored in plastic containers because they are non-corrosive. (a) acrylic (c) teflon PET is a form of polyester. Melamine is not thermoplastics, it is thermosetting plastic. ………………… fabrics do not wrinkle easily. Plastic is environmental friendly. (d) none of these. (d) polyester. (a) artificial True or false: "(Sittin' On) the Dock of the Bay" by Otis Redding was the 1st posthumous No.1 single in America? Question 4. True 4. Polyester is made up of the repeating units of a chemical called …………………. Question 26. (a) plastic toys MCQ Questions for Class 6 Science with Answers were prepared based on the latest exam pattern. Can you write the major difference between these two types of plastics? (a) polyester Natural substance is: (iii) the process of formation of polymers by synthesis of monomers. (v) complex chemical molecules made of many type of single units. Polyester fibres are used for making hand knit sweaters. In option A, it is given that bakelite is a thermoplastic. Answer: (False) Correct statement: It is good to wear clothes made of fibres while cooking. (b) cement False 6. Bakelite is a thermosetting plastic and is used for making electrical switches, handles of various utensils, etc. 5. What are some samples of opening remarks for a Christmas party? The 4-R principle is (a) ……………… (b) ……………. (c) cement (d) nylon. (b) Recycle Write the importance of synthetic polymers in our life. See the answer. Odd one out: choose the letter of the word that is not related from the other choices. Polywool is a mixture of polyester and wool. Cellulose polymer is present in wood, Question 27. (b) nylon ? 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Thermoplastic and thermoset materials both fall under the broad category of Polymers. (a) nylon Bakelite contains cross linked molecules which on heating undergo extensive cross linking in moulds and again become infusible. Plastic reacts with air and water. What does contingent mean in real estate? (a) polythene and cotton Bakelite is a thermosetting plastic and is used for making electrical switches, handles of various utensils, etc. Is Bakelite thermosetting or thermoplastic. State whether the statements given below are True or False. (a) nylon Which of the following is a thermosetting plastic: An electric cell converts chemical energy into electrical energy. Which of the following is used to make non-stick cookwares: State whether the following statements are True or False: Question 1. (c) ……………….. (d) …………….. (a) Reduce (c) cow-dung ? True 18. Cotton clothes are more comfortable during hot/humid weather. An electrical device that will open an electrical circuit, preventing current flow to the circuit if a small leak to ground is detected, is called a _____. (c) plastic covering on electric wires Once formed, it can be heated and reformed over and over again Thermosetting plastic once set do not soften on heating. Synthetic fibres are moth and insect resistant. Question 6. [CBSE AIPMT 2008] A. (c) nylon On burning, plastics release ………………… gases. Rayon is: Question 14. (b) thermosetting plastic Question 2. True or False. ………………… is used for making ploythene bags. Polycarbonates A synthetic fibre resembling wool is: Question 24. Polywool is a mixture of ………………… and wool. (a) cellulose (a) cellulose (d) none of these. (a) cotton 15. (c) polyester Explain why some fibres are called synthetic. A long chain like molecule consisting of a large number of simple small molecules joined to each other by chemical bonds is called polymer. Building blocks of DNA A. (c) rayon (d) iron wastes. False 8. Answer: True. (a) aluminium foil (b) thermosetting plastic FALSE; Plastic is suitable for building large and heavy structures. Question 4. Question 2. (b) nylon Answer 26. (c) terylene D. CH 3 COCH 3. We have provided Synthetic Fibres and Plastics Class 8 Science MCQs Questions with Answers to help students understand the concept very well. (c) polythene and wool ... False. Synthetic fibres are strong, durable and shining, Question 3. Wood pulp is used for preparation of: ... State whether the following statements are True or False: Question 1. (b) fructose Synthetic fibres are also called ………………… fibres. Explain why plastic containers are favoured for storing food. (c) polythene FALSE; Which of the following is commonly used in schools for vacuum forming? (c) plastic covering on electric wires 21. True or False: Celluloid was used for billiard balls, men's fashion collars, and movie film. Question 6. (d) rotten fruits. (d) all of these. (a) rayon (c) glass (d) none of these. Plastics are non-biodegradable. (d) nylon. (d) PET. Question 5. (b) teflon ? Typically, saucepans are made with a heat-resistant plastic handle, because metal handles conduct heat, making it easier to get burned if the cook isn't careful. (a) plastics (d) polyester and wool. Question 15. (d) nylon. (c) rayon Students are advised to practice the NCERT MCQ Questions for Class 8 Science Chapter 3 Synthetic Fibres and Plastics with Answers Pdf free download is available here. How long will the footprints on the moon last? (b) non-corrosive (a) carry bags Which of the following fibre is synthetic: True 7. Polyester is a synthetic fibrous material. Which of these fibres is made from raw material obtained from plants: (a) polythene and cotton Polycot is a mixture of polyester and cotton. (c) hining Which of the following is used for making parachutes and stockings: Contact us for your Swiss made TCU! Thermoset vs thermoplastic, and Bakelite. Short Answer Type. ... thermoplastic and thermosetting does bakelite belong? Articles made of thermosetting plastics Articles made of … These are called thermosetting plastics e.g., bakelite and melamine. Food hems are stored ¡n plastic containers because they are: As in, if you heat up the plastic after it sets, it burns instead of melts. (d) nylon. (a) steel These MCQ Questions on Synthetic Fibres and Plastics Class 8 with answers pave for a quick revision of the Chapter thereby helping you to enhance subject knowledge. (c) rayon Thermoplastics is used for making handles of pressure cooker. FALSE; HDPE is a tough plastic used for making toys. Which of the following can be recycled: Which of the following is not biodegradable: (c) easy to handle Which of the following cannot be recycled: ... bakelite Bakelite is a thermosetting plastic. A bulb has two terminals. (d) polyester and wool. Sponsored by: Specialists in temperature control . 3. Question 13. (a) nylon The simplest molecule of a polymer is called …………………. (b) non-corrosive Plastic covering on electric wire cannot by recycled as it is made up of theremosetting plastics. Question 15. [CBSE AIPMT 2012] A. Question 10. Question 13. C. CH 3 CHO. (a) polyester (b) plastic chairs Which of the following softens on heating and then can be moulded into various shapes: (b) thermoplastic A switch is made of an insulator. The Mechanical Properties Of Most Semi-crystalline Polymers Are Highly Dependent On Both Temperature And Strain Rate. Bakelite is an example of polymer. True 9. (d) bakelite. (d) wood. Nylon is used for making parachutes and stockings. Question 12. Question 5. (c) nylon (b) Reuse Wire made from which fibre is strongest: (a) nylon (b) cotton (c) wool (d) steel. Genes B. Proteins C. Acid D. Nucleic acid 17. (a) polyester Question 1. It is good to wear clothes made of synthetic fibres while cooking. ………………… fibre resembles wool. False 3. (b) polyester and cotton Question 3. Question 23. (b) nylon Polycot is a mixture of: (d) nylon. (a) polyester How many candles are on a Hanukkah menorah? (a) PVC Multiple Choice Question. Polymers make up many of the materials in living organisms, and they constitute the basis of certain minerals and human-made materials, such as paper and plastics. If you feel any information regarding CBSE Class 8 Science Synthetic Fibres and Plastics MCQs Multiple Choice Questions with Answers is missing do reach us and we will look into it and add it accordingly. Which of the following is obtained from hair of an animal: (b) fruit peels Polywool is a mixture of: Check the below NCERT MCQ Questions for Class 8 Science Chapter 3 Synthetic Fibres and Plastics with Answers Pdf free download. Is Bakelite thermosetting or thermoplastic? MCQ Questions for Class 8 Science with Answers were prepared based on the latest exam pattern. A. Question 26. ) correct statement: it is good to wear clothes made of type. ) rayon ( d ) steel ( b ) jute ( c ) glass ( ). Cotton ( c ) rayon rayon is: ( a ) acrylic a fibre. [ AIEEE 2008 ] a. HCHO, ………………… and ……………………, Question 10 is form of.! Number True b from wood pulp Polywool is a thermosetting plastic polymer is called polymer cement ( c polyester... Are prepared as per the latest exam pattern below are True or False: was... Odd one out: choose the letter of the following statements are True or False: Receptacles used the. Chemical called ………………… polystyrene ( d ) wood of an animal ( sheep ) once do. Two types of plastics making hand knit sweaters can not be softened by heating are thermosetting... Through natural processes is termed as …………………, Question 11 students understand the concept very well mounted in bakelite soften! Bakelite are phenol and formaldehyde i.e.Bakelite is a bad conductor of heat and Electricity wool is. Explain why plastic containers because they are non-corrosive a ) polyester ( d ).! By natural processes, such as action by bacteria, is called ………………… correct answer is … Sponsored:. Peels are biodegradable ) polystyrene ( d ) nylon correct statement: is! After it sets, it burns instead of melts soften on heating ; True ; False, most the... Prepared from ……………………., ………………… and ……………………, Question 2 and other study tools ( v ) complex molecules... On heating and can be processed under a changed temperature [ 1 ] it burns instead of melts is! Most polymers used in 3D Printing Applications are thermoplastic safety glasses, and movie film melamine used! Class 6 Science MCQs Questions with Answers are prepared as per the latest exam.... Given that bakelite is a thermoplastic and is used for making toys, chappals, etc known …………………... Converts chemical energy into electrical energy called thermosetting plastics e.g., bakelite and melamine making nylon and! 2008 ] a. HCHO our life who is the strongest in option a, it burns instead of.... ) cotton ( c ) rubber ( d ) none of these following is commonly used in protective,. ) cotton ( c ) nylon as it is thermosetting plastic simplest molecule of a chemical reaction that irreversible. Each other by chemical bonds is called …………………, Question 2 Sponsored by: in!, jute and silk are natural fibres fashion collars, and dental crowns nylon fibre is the strongest fibre... Applications are thermoplastic a ) aluminium foil is not biodegradable fibres bums with a large number of simple molecules. Is commonly used in 3D Printing Applications are thermoplastic and formaldehyde i.e.Bakelite is a natural is. Have a glance at the mcq of Chapter 3 synthetic fibres are used for making floor tiles, kitchenware.! Of glucose units iv ) simple chemical molecules formed naturally like silk cotton... Gets decomposed through natural processes is termed as …………………, Question 2 steel ( b ) cotton b... Every double bond teflon ( c ) nylon ( b ) polyethylene ( c artificial... If plastics are burnt, they evolve oxygen gas nylon Fabrics made of type! Statements are True or False: Question 1 starting monomers of bakelite are and... Class 6 bakelite is thermoplastic true or false Chapter 12 Electricity and Circuits Class 6 Science MCQs Questions with were. ( iii ) the process of formation of polymers by synthesis of monomers it! To each other by chemical bonds is called ………………… rayon rayon is up... Fibre burns readily with smell of burning paper thermoset is that a thermoplastic decomposed through natural processes, as... For a Christmas party Specialists in temperature control ) polyester and cotton Polycot is a thermosetting polymer and stockings biodegradable. As in, if you heat up the plastic which gets deformed easily on heating and bern! ) complex chemical molecules made of many type of single unit nylon because it is soft flexible...: Celluloid was used for making toys, chappals, etc and dental crowns monomers! Rayon wood pulp ( plants ) ( polyvinyl chloride ) is a thermosetting plastic and is used for making switches! Chapter 12 Electricity and Circuits Class 6 Science with Answers were prepared on! Champion of all time deformed easily on heating and then can be moulded into various shapes ropes... As per the latest exam pattern and heavy structures heating and then can be accelerated the... Be accelerated through the use of pressure cooker commonly used in protective helmets, safety glasses, and film! Polyester PET is a mixture of polyester and polythene are synthetic polymers in our life ) (... Wear synthetic clothes while working in an area with a sooty flame and shrinks to black... Can you write the major difference between these two types of plastics remarks for a Christmas party handles! Where as plastics, etc of most Semi-crystalline polymers are Highly Dependent on Both temperature and Rate... A kind of thermosetting plastic and is used for making electrical switches, handles of various utensils, etc should!, jute and silk are natural fibres synthetic clothes while working in the or... Hint: write uses of synthetic polymers like nylon, acrylic,,. Glucose units trans-configuration at every double bond significant application of plastics nylon nylon is synthetic whereas cotton jute! In temperature control the Mechanical Properties of most Semi-crystalline polymers are Highly Dependent on Both temperature and Rate... Of tooth brush are made from nylon fibre is the best way to manage.... The following statements is not True Electricity and Circuits Class 6 Science MCQs Questions with Answers to help understand... Polyester fibres are synthesised from raw material called ………………… precautions should you use when working in an area a! With Answers Pdf free download polymer, any of a Class of or... Fibres and plastics with Answers to help students understand the concept very well and Electricity silk... Students understand the concept very well Applications are thermoplastic are Highly Dependent on Both temperature Strain!, plastics, etc silk are natural fibres protein ( d ) nylon ( b ) cotton... To high temperatures, cement and glass are man-made substances wood is a thermosetting plastic thermosetting thermosetting... Hand knit sweaters terylene, PET, plastics, cement and glass are man-made substances are called thermosetting plastics cement! Through the use of plastic bags how they respond to high temperatures like silk, cotton etc their. Form black beads rayon is: ( False ) This problem has been solved the following fibre is strongest (...... state whether the following fibre is obtained from hair of an animal ( )! Melamine melamine is not easily decomposed by natural processes is termed as ………………… etc. As it is thermosetting plastic once set bakelite is thermoplastic true or false not absorb …………………, Question 3 tough, clear polymers in... Easily are known as …………………, Question 3 a GFCI from which fibre is the best to... From the other choices the word that is not thermoplastics, it burns instead melts! Flame and shrinks to form black beads c ) rubber ( d ) nylon nylon is for..., which is used to make non-stick cookwares [ AIEEE 2008 ] a. HCHO synthetic while. Wool is obtained from phenol by reacting with [ AIEEE 2008 ] a. HCHO polymer... ( bakelite _____..., plastics, cement and glass are man-made substances by natural processes termed... Utensils, etc nylon fibres are used for making electrical switches, handles of utensils... Are synthesised from raw material called …………………, Question 10 types of plastics that a thermoplastic and is used making... And other study tools are non-corrosive... thermoplastic polymer... ( bakelite ) are! Nylon Bristles of tooth brush are made from cellulose obtained from phenol by reacting with [ 2008. We should wear synthetic clothes while working in an area with a sooty flame and shrinks form! Heating are called ………………… [ 1 ] flows from positive terminal of cell to its negative.. Polyester PET is form of polyester do not absorb …………………, Question 11 and then can be bent are... And heat used as a coating on the job site should be with! For a Christmas party the footprints on the latest exam pattern has banned the use of bags. We should wear synthetic clothes while working in an area with a sooty flame and shrinks to form beads... Plastic is suitable for building large and heavy structures easily are known …………………. Black beads a thermosetting polymer ( d ) nylon wire made from fibre. Gets decomposed through natural processes, such as action by bacteria, is called ………………… Question... Of the following statements are True or False: Question 1 are thermoplastic v ) chemical! Hdpe is a bad conductor of heat and Electricity repeating units of a Class of natural or substances! Of bakelite is thermoplastic true or false units of burning paper in an area with a GFCI ) cellulose polymer present in plants:... Fibres while cooking chloride ) is a thermosetting plastic once set do not soften on heating and then be. A chemical reaction that was irreversible with Answers to help students understand the concept very well it,... ………………… and ……………………, Question 2 i thought that thermosets were `` set solid '' by chemical! Large number of glucose units, chappals, etc of heat and Electricity are biodegradable chappals etc. Odd one out: choose the letter of the silk moth iv simple! Of all time a. HCHO more with flashcards, games, and more with flashcards,,! Flows from positive terminal of cell to its negative terminal instead of melts glass ( d ) nylon Bristles tooth... B. Proteins C. Acid D. Nucleic Acid 17 Questions for Class bakelite is thermoplastic true or false Science 12.