State the characteristics of synthetic fibres. C. A and D Answer: Write some of the uses of plastics in healthcare industry. Column B Ans: The full form of PVC is ‘ Polyvinyl chloride’ PVC is a thermoplastic. Such small units combine to form a large single unit called a polymer. Following are the ways to save the environment from excessive plastic wastes: Question 48. D. both are cellulose polymers It is used for making bottles and utensils which is replacing materials like glass. 2 Polyurethane (PU) foam and polystyrene (PS) foam appeared in the 1930s. C. rayon Thermosetting plastics: The plastics which when moulded once, cannot be softened by heating are called thermosetting plastics. It can be recycled, reused, coloured, melted and can be rolled into sheets or made into wires. NCERT Solutions for Class 6, 7, 8, 9, 10, 11 and 12. (A) Nylon Give two uses of PVC. For example, polycot is a mixture of polyester and cotton. View Answer. B. acrylic (ii) Teflon Which of the following is not a thermoplastic polymer? View Answer. It is a special plastic on which oil and water do not stick. It does not get completely burnt easily. Bakelite is a cross-linked thermosetting polymer. Question 55. These are made by mixing two types of fibres. Temperature and sunlight may also play roles in the decomposition of biodegradable plastics and other materials. Answer: B. rayon USES OF BAKELITE: Bakelite due to its high resistance to electricity and heat is used in automotive components and industrial applications. Polyester is the synthetic fibre which is made up of repeating units of a chemical called an ester. Answer: D. C and D Polyester is the synthetic fibre which is made up of repeating units of a chemical called an ester. 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 Based on the arrangement of monomers, plastics are of the following types: Question 30. B. polythene For thousands of years, humans used stone to fashion tools. PET is a very familiar form of polyester. Polythene and poly vinyl chloride are thermoplastics. Synthetic fibres absorb very less water and they dry up quickly. Question 16. Plastic is a polymer like a synthetic fibre. The synthetic fibre which contains the group similar to those which give fruits their ‘sweet smell’ is: The fabric will melt and can stick to the body of the person wearing it. PET is used for making bottles, utensils, films and wires. Hence, it became very popular for making clothes. Melamine is a thermosetting plastic. B. it is obtained from wood pulp We must not throw plastic in the water bodies or on the roads. It is because of the unique properties it possesses. Give one use each of bakelite, nylon and acrylic. They cannot be reshaped. Which of the following has cross-linked polymer chains? Polymers also occur in nature. Nylon is used in textile industry to produce clothes. C. bakelite Bakelite is a thermosetting plastic which is a poor conductor of heat and electricity. Acrylic is a synthetic fibre which appears to resemble wool. If the clothes made of synthetic fibres catch fire, it can be very dangerous. We must try to Reduce, Reuse, Recycle and recover the use of plastic items. It is used to make floor tiles, kitchenware and fire resistant fabrics. It releases lots of poisonous fumes into the atmosphere when burned and causes air pollution. They cannot be reshaped. Although rayon is obtained from natural source, wood pulp, yet it is a manmade fibre. What is meant by biodegradable and non-biodegradable materials? PVC is a thermoplastic. Resin products no better than bakelite from a health viewpoint are used everywhere these days. It is a very familiar form of polyester. (iv) Nylon It is used to make floor tiles, kitchenware and fire resistant fabrics. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ … State the uses of PET. If the clothes made of synthetic fibres catch fire, it can be very dangerous. Polyester is the synthetic fibre which contains the organic group similar-to those which give fruits their sweet smell. Which plastic is used: For example, cotton is a natural polymer which is made from the cellulose. Cellulose polymer is made from the repeat units of the monomer glucose. It was prepared from coal, water and air. It takes several years for plastic to decompose and it is not environment friendly. It is used to make electrical switches and handles of utensils. Answer: A. nylon Melamine is a thermosetting plastic which is resistant to fire and can tolerate heat better than other plastics. 3R’s principle in the context of use of plastics means we must try to Reduce, Reuse and Recycle the use of plastic items. Now the other thing the author is NOT aware of. (b) for giving non-stick coating on frying pans? The British children's construction toy Bayko, launched in 1933, originally used Bakelite for many of its parts, and took its name from the material. Fibre C is Rayon. The reaction involved is condensation reaction in the presence of either a basic or acidic catalyst. We must try to Reduce, Reuse, Recycle and recover the use of plastic items. It can be easily moldable and can be shaped in any form. Also, the burning process of synthetic material is quite slow. What are the various types of plastics? Phenol-Formaldehyde Resin (Bakelite). Different substitutes of phenol and formaldehyde can also be used depending on the application. C. its fibres can be woven like those of natural fibres. D. acrylic It is used for making parachutes and rock climbing ropes. It is used to make electrical switches and handles of utensils. Question 68. It is also used to … PVC, Polythene, Bakelite. One of the following man-made fibre is not prepared from raw materials obtained from petrochemicals. Why should we not wear clothes made of synthetic fibres (like nylon or polyester) while working in the kitchen? Answer: The molecules set the way batter sets in … Give two examples of thermosetting plastics. 40) State two uses of melamine ? These are used in the manufacturing of toys, combs and different types of containers. Thermoplastics: The plastics which gets deformed easily on heating and can be bent easily are called thermoplastics. The plastics which gets deformed easily on heating and can be bent easily are called thermoplastics. (d) paper or jute bag Disposal of plastic is a major problem. For example, Bakelite is a thermosetting plastic which is a poor conductor of heat and electricity. It is one of the most widely used polymers in the world. Give the name of both monomers used the formation of terylene. (iii) Rayon – (a) Prepared by using wood pulp It takes several years for plastic to decompose. Some fibres are stronger than the others. Question 67. Should the handle and bristles of a toothbrush be made of the same type of plastic material? Which of the following is a man-made fibre prepared from wood-pulp? Plastic articles are available in all possible shapes and sizes. It is flexible, resistant to moth, oil and chemicals. B. it is obtained from wood pulp It played a large role in bringing electronics into the automobile industry because it is heat and electricity resistant. It is used to make floor tiles, kitchenware and fire resistant fabrics. Write the full form of PVC. Ans: Two uses of Bakelite is. A. bakelite (ii) Rayon could be the synthetic fibre C which is made of polymer D containing glucose. Question 45. (c) Fibre C is prepared from a natural raw material. Name any five commonly used articles made of plastics. Answer: Centuries later the Iron Age introduced iron as the material of choice. products), and this can be attributed to its highly versatile nature. Rayon is the man-made fibre which is regarded as artificial silk. It is used to make electrical switches and handles of utensils. Answer: Which synthetic fibre feels like wool and used as a substitute for wool? It does not react with water and air. The fact that Bakelite is unaffected by heat in this way classifies it as a thermoset. Explain the difference between thermoplastics and thermosetting plastics. Answer: Answer: (i) terylene could be the synthetic fibre B which contains a large number of ester groups. Name any two synthetic fibres. B. rayon This is because cotton absorbs sweat from our body and allows it to evaporate into the air. Name the man-made fibre prepared from natural materials. Answer: Terylene is a kind of a polyester. D. melamine It is used to make electrical switches and handles of utensils. another synthetic fibre C is made of a polymer D which consists of a number of glucose units joined one after the other. Answer: The clothes of a person working in the kitchen catch fire accidently causing severe burns. Question 53 A. It is used for making bottles and utensils which is replacing materials like glass. Plastic is non-biodegradable. Answer: Answer: Question 75. We must take a cotton carry bag or a jute bag while shopping. Answer: The most widely used thermoplastic material in the medical device industry is PVC. Which of the following are thermosetting polymers? Can be rolled into sheets. It is used for making bottles and utensils which is replacing materials like glass. Following are the characteristics of synthetic fibres: Question 18 Answer: Therefore, we must avoid the use of plastic as much as possible. Question 9. Answer: (d) Fabrics do not wrinkle easily Answer: Answer: Question 3. Hence, it became very popular for making clothes. Characteristics and uses. Name the units of which cellulose polymer is made. Answer: Esters are the chemicals which give fruits their smell. A nylon thread is actually very strong than steel wire. For example, polythene and PVC are thermoplastics. It is used for making gaskets, pump packings, valves, seals etc. Rayon is obtained by the chemical treatment of wood pulp or cellulose. The manufacture of one of the following artificial fibres contributes to deforestation this fibre is : Hence, we should not wear synthetic clothes while working in a kitchen or working in a laboratory. Give the important uses of nylon. Following are the non-biodegradable materials: Polythene bags, Aluminium cans, Toothbrush, Electric switch and Frying pan handle. PET is used for making bottles, utensils, films and wires. It was petrochemicals which is derived from fossil fuels C. acrylic Nylon is the first fully synthetic fibre. The plastics which gets deformed easily on heating and can be bent easily are called thermoplastics. Nylon is the first fully synthetic fibre. Question 24. Answer: A. flax Hence, a polymer is made of many repeating units. Question 61. What are the various ways to save the environment from excessive plastic wastes? It is used to make electrical switches and handles of utensils. They melt on heating. The similarity between artificial silk and cotton is that: Bakelite Bakelite was the forerunner of the modern plastics industry. Following are the properties of nylon: Question 19. Give three advantages of polythene over natural materials. Cotton is a natural fibre. The fabric will melt and can stick to the body of the person wearing it causing severe burns. Hence, electric witches, plugs and sockets made of thermosetting plastics. Answer: We must develop the habits which are environment-friendly. Question 2. D. acrylic Which of the following plastics is used for making electric switches? Match the terms of column A correctly with the phrases given in column B: Bakelite is a thermosetting plastic. What are plastics? C. both are amide polymers Hence, the manufacturing of synthetic fibres helps in the conservation of forests. Plastic is used to manufacture toys, combs, containers, utensils and electrical switches. A polymer is made of many repeating units. It releases lots of poisonous fumes into the atmosphere when burned and causes air pollution. Answer: C. Teflon Write the uses of acrylic fibres. If the clothes made of synthetic fibres catch fire, it can be very dangerous. It is used for nonstick coating on cook wares. Nylon is the first fully synthetic fibre. "The Material of a Thousand Uses" Bakelite's properties make it suitable for several uses including a molding compound, binding agent, varnish, and protective coating. Which synthetic fibre contains the organic group similar-to those which give fruits their sweet smell. It is a synthetic fibre which appears to resemble wool. C. rayon Question 76. Name the fibre obtained by the chemical treatment of wood pulp (or cellulose). Question 13. Rayon is obtained by the chemical treatment of wood pulp or cellulose causing deforestation. Question 41. A and B For example, Bakelite is a thermosetting plastic which is a poor conductor of heat and electricity. It is used for nonstick coating on cook wares. It is also used for making parachutes and ropes for rock climbing. B. This is can be reduced by use paper or jute bag. Answer: Acrylic is a synthetic fibre which appears to resemble wool. Terylene and PET are both polyesters. Question 78. Hence, the manufacturing of synthetic fibres helps in the conservation of forests. Question 52 B. It is used to make floor tiles, kitchenware and fire resistant fabrics. Answer: C. nylon Question 71. Polyethene, PVC, Bakelite and melamine are the four different types of plastics. Question 29. A and B It is the man-made fibre which is regarded as artificial silk. Synthetic fibres are used in the manufacture of a variety of household articles such as ropes, buckets, furniture, containers, etc. The plastics which when moulded once, cannot be softened by heating are called thermosetting plastics. A. wool The fabric will melt and can stick to the body of the person wearing it. Question 79. Nylon fibres is very strong, elastic and light. D. acrylic Plastic bags thrown in the garbage can be swallowed by the animals such as cows. (f) for making flexible water bottles? For example, Bakelite is a thermosetting plastic which is a poor conductor of heat and electricity. (i) Polyester – (d) Fabrics do not wrinkle easily B. flax Answer: What is acrylic? Hence, it is suitable for making dress material. Polymers also occur in nature. (B) Terylene (c) for making handles of frying pans? Answer: We must try to minimize the use of plastic materials. (a) dirty water drains and sewers? (a) Synthetic fibres are also called……….or……fibres. Why are electric witches, plugs and sockets made of thermosetting plastics? Question 64. It is the first fully synthetic fibre. Polythene, PVC- Poly vinyl chloride, bakelite and melamine are the examples of different plastics. Esters are the chemicals which give fruits their smell. ... Give two examples of Biodegradable polymers. A. bakelite Answer: [5] The result is a hard and tough material that is unaffected by heat, electricity, water, chemicals, most acids, and has an incredibly wide range of applications. Answer: Bakelite is used for making plugs and switches. Question 15. Bakelite is a thermosetting plastic. To which kind of synthetic fibres does terylene belong? (B) Polythene bag For example, polythene and PVC are thermoplastics. 14. The arrangement of units in a plastic can be linear or cross-linked. A. polyvinyl chloride 14. Give one use of Teflon. Teflon is a special plastic on which oil and water do not stick. The clothes made from acrylic are relatively cheap and are available in a variety of colours. Bakelite is a thermosetting plastic which is a poor conductor of heat and electricity. In case of thermoplastics, the shape hardens when it is cooled, but can be reshaped when heated up again. Also, the burning process of synthetic material is quite slow and it does not get completely burnt easily. Due to its excellent insulating properties it is used for making switches and other electrical appliances. Melamine and Bakelite are thermosetting plastics. When thrown in the water drains or in sewers it results in choking of the drains. [MSE (Chandigarh)] Answer: Three advantages of polythene over natural materials are : It is strong but flexible. It can also be used to make fur and many different knitted clothes. C. polyester Nylon is the first fully synthetic fibre. (a) for making uniforms of fire-men fire resistant? Question 80. Answer: Question 17. Terms of Use and Privacy Policy: Legal. Question 34. Explain how, manufacturing of synthetic fibres is actually helping in the conservation of forests. The use of plastic has a bad effect on the environment because it is non-biodegradable. Answer: B. acrylic The materials which gets decomposed through natural processes, such as by the action of microorganisms are called biodegradable materials. Nylon is the first fully synthetic fibre. These are used in the manufacturing of toys, combs and different types of containers. How is rayon made? Question 2. The synthetic material which can be used for marking fabrics as well as shatterproof bottles and jars is: Bakelite is a thermosetting plastic which is a poor conductor of heat and electricity. Vulcanised rubber is a thermosetting polymer which is used to make tyres. It was made in 1931, without the use of any natural raw material from plants or animals. C. A and C D. it can be dyed in wide variety of colours. Answer: B. both melt on heating B and C Bakelite was invented in the early twentieth century but it is an important topic of study even in this 21st century. It can result in choking their respiratory system and can be fatal. What is Bakelite Plastic? What is PET? Thermoplastics: The plastics which gets deformed easily on heating and can be bent easily are called thermoplastics. Question 70. Following are the biodegradable materials: Woollen clothes, paper, peels of vegetables and fruits, Cotton cloth and Jute bag. (adsbygoogle = window.adsbygoogle || []).push({}); Copyright © 2010-2018 Difference Between. The disposal of plastic wastes is a major problem. What are thermosetting plastics? What type of shirts should we buy for summer: cotton shirts or shirts made from synthetic materials (like polyester)? Key Difference – Bakelite vs Plastic Plastic and Bakelite are both organic polymers, having a very large molecular weight though there exists a difference between the two based on their properties and usage. Rayon is different from truly synthetic fibres because: B. Answer: Rayon is obtained by the chemical treatment of wood pulp or cellulose. It is flexible, resistant to moth, oil and chemicals. Therefore, we must avoid the use of plastic as much as possible. For example, cotton is a natural polymer which is made from the cellulose. (d) PVC (Polyvinyl chloride) is used for making wire insulation. This one is: Plastic is a polymer like a synthetic fibre. The synthetic fibre A is chemically a polyamide whereas the synthetic fibre B contains a large number of ester groups. Answer: The physical, chemical, electrical and thermal properties of Bakelite make it a widely used … (d) The properties and uses of bakelite are as follows: Properties: 1) It is a good electrical insulator. The plastics which gets deformed easily on heating and can be bent easily are called thermoplastics. Which of the two is a thermosetting plastic: PVC or bakelite? Water resistant. C. terylene We must take a cotton carry bag or a jute bag while shopping. Answer: Question 4. Plastic is light, strong and durable and can be moulded into different shapes and sizes. Question 44. Silk is the strongest fibre whereas wool is the weakest in terms of strength. A. flax B. polyester We must try to minimize the use of plastic materials. B. nylon Uses of Bakelite. Modern healthcare would not be possible without the use of plastic materials. It is used to make electrical switches and handles of utensils. D. rayon A. nylon Rayon can be used in the following ways: Question 52 A. State the important properties of nylon. On the other hand, the raw materials for synthetic fibres are mainly petrochemicals such as coal. 2) It is harder than other plastics. Answer: Draw labelled diagrams to illustrate your answer. Question 51 B. Polyester is the synthetic fibre which contains the organic group similar-to those which give fruits their sweet smell. Answer: Answer: Plastic is non-biodegradable. It is used for making sweaters and tracksuits and also for the linings of boots and gloves. Answer: It is used in the following ways: Question 25. The plastics which gets deformed easily on heating and can be bent easily are called thermoplastics. (b) animals (such as cows)? The raw materials for synthetic fibres are mainly petrochemicals such as coal. D. acrylic Give one use each of bakelite, nylon and acrylic. Bakelite is thermosetting plastic. History is shaped by the materials we develop and use. As a result, they are not used for making frying pan handles. Explain why, thermoplastics become soft on heating but thermosetting plastics do not become soft on heating. Answer: B. polyester (b) Name the polymer D. Making electric fittings such as electric switches, Making plugs and sockets. On the other hand, thermosetting plastics are those materials that are made by polymers joined together by chemical bonds, having a highly-crosslinked polymer structure. Acrylic is a synthetic fibre which appears to resemble wool. D. polyester Its tangled polymer chains can uncoil and slide past each other, making it a flexible material. Frying pan handles are made with thermosetting plastics which are resistant to fire and can tolerate heat better than other plastics. The non-stick coating on frying pans is that of a plastic called: (a) which materials are polyesters? Answer: Telephone instruments, Cooker handles, Electric switches and Ball point pens are made of Thermosetting plastics. Melamine is a thermosetting plastic which is resistant to fire and can tolerate heat better than other plastics. Give reasons for your Answer:. Its tangled polymer chains can uncoil and slide past each other, making it a flexible material. Answer: Phenolic resins are the result of a condensation reaction of phenol and formaldehyde. C. rayon These units are made of chemical substances. Answer: Question 5. For example, Bakelite is a thermosetting plastic which is a poor conductor of heat and electricity. Bakelite was used for many things when it first came to light. (a) Melamine is a thermosetting plastic which is resistant to fire and can tolerate heat better than other plastics. (c) Acrylic is used as a substitute for wool. Cellulose is made up of a large number of glucose units. Answer: give reasons for your choice? Column A Filed Under: Chemistry Tagged With: Bakelite, Bakelite and Plastic differences, Bakelite characteristics, Bakelite Chemical Structure, Bakelite properties, Bakelite uses, Bakelite vs Plastic, Compare Bakelite and Plastic, Plastic, Plastic characteristics, Plastic Chemical Structure, Plastic properties, Plastic uses. A material which is not easily decomposed by natural processes is termed as non-biodegradable. It is flexible, resistant to moth, oil and chemicals. (C) Polythene Answer: It was also used for patriotic wartime jewelry. Plastic containers are preferred for storing food because of the following reasons: Question 36. CH2O)n. Its chemical name is “polyoxybenzylmethylenglycolanhydride”. C. terylene Choose the thermoplastics and thermosetting plastics from the following: Melamine, Polythene, Bakelite, Polyvinyl chloride What is meant by the 3R’s principle in the context of use of plastics? View Answer. Question 8. Question 69. Bakelite holds a true position in… Question 49. Answer: Question 37. It is used in nonstick cooking vessels. Question 1: Write the names and structures of the monomers of the following polymers: (i) Nylon-6,6 (ii) Bakelite (iii) Polystyrene Answer: Question 2: Write the names and structures of the monomers of the following polymers: (i) Glyptal (ii) Teflon (iii)Nylon-6 Answer: Question 3: Write the name and structures of the monomers of the following polymers: (i) Buna-S (ii) Glyptal (iii) Polyvinyl chloride Answer: Question 4: Write the names and structures of the monomers of the following polymers: (i) Nylon-6 (ii) Novolac (iii)B… Question 12. (a) Prepared by using wood pulp It is also used in textile industry to make textiles. Answer: D. Acrylic, Silk, Wool. Plastics are used in the packaging of tablets, syringes, doctor’s gloves and a number of medical instruments. Answer: It has the ability to be very lustrous, semi lustrous or dull. B. melamine D. acrylic It is used to make floor tiles, kitchenware and fire resistant fabrics. It is used in the manufacturing of toys, combs and different types of containers. Rayon is the man-made fibre prepared from the natural materials. They melt on heating. Polycot, poly wool and terry cot are popular polyesters. A. Teflon (b) Plastic bags thrown in the garbage can be swallowed by the animals such as cows. Question 66. It can also be dyed in a variety of colours. Plastic is non-reactive. It is known as one of the first synthetic plastics, derived from methanol and coal tar. Plastics are used for making intravenous blood bags and heart valves as well. (c) Like synthetic fibres, plastic is also a ………… High-Density Polyethylene (HDPE 2), Low-Density Polyethylene (LDPE 4), Difference Between Coronavirus and Cold Symptoms, Difference Between Coronavirus and Influenza, Difference Between Coronavirus and Covid 19, Difference Between Lenovo S2 and Samsung Galaxy S2 (Galaxy S II), Difference Between Kinetic Energy and Potential Energy, Difference Between Exorcism and Deliverance, Difference Between Bactericidal and Bacteriostatic, Difference Between Colonialism and Imperialism, Difference Between 5 HTP Tryptophan and L-Tryptophan, Difference Between N Glycosylation and O Glycosylation, Difference Between Epoxy and Fiberglass Resin, Supermarket bags, plastic bottles (Inexpensive), Detergent bottles, milk jugs, and molded plastic cases, Plumbing pipes, shower curtains, window frames, flooring, Bottle caps, drinking straws, yogurt containers. Answer: Question 59. Answer. C. A and D The plastics which cannot be softened by heating, when moulded once are called thermosetting plastics. Answer: Question 50. Answer: These are used in the manufacturing of toys, combs and different types of containers. (d) for making insulation of electric wires? For example, polythene and PVC are thermoplastics. Used in all manner of electrical devices, household objects, appliances and decorative items. On the other hand, Thermosetting polymers, once moulded, cannot be softened when heated. Plastic is a polymer like a synthetic fibre. Acrylic is the synthetic fibre feels like wool and used as a substitute for wool. Teflon is used for nonstick coating on cookware. Nylon is the first fully synthetic fibre. Give two reasons only. Question 63. Thermoplastic materials are made of polymers which are linked by intermolecular forces, forming linear or branched structures. Teflon is a special plastic on which oil and water do not stick. Rayon is the man-made fibre which is regarded as artificial silk. D. C and D For example, polythene and PVC are thermoplastics. It was prepared from coal, water and air. Question 11. What is a polymer? B. Thermoplastic materials are made of polymers which are linked by intermolecular forces, forming linear or branched structures. (a) Terylene and PET are polyesters. Polythene is a thermoplastic polymer. (d) The fibre B which is terylene contains the same type of groups as those in a PET jar. Fabrics made from polyester does not get wrinkled easily. (b) Teflon is used for giving non-stick coating on frying pans. Bakelite requires two monomers- phenol and formaldehyde. These are used in the manufacturing of toys, combs and different types of containers. Answer. The handle and bristles of a toothbrush should be made of different type of plastic material. VIEW MORE. D. cotton What is nylon? Rayon is obtained by the chemical treatment of wood pulp or cellulose. Question 26. Toys and jewelry were most often made from either Catalin or Faturan, but were marketed as bakelite because they used the polymer resin base. It causes environmental pollution. The full form of PVC is polyvinyl chloride. Plastics can be used in healthcare in the following ways: Question 43. Example: Rayon and Nylon are synthetic fibres. It is used for making sweaters and tracksuits and also for the linings of boots and gloves. (d) Which fibre (A, B or C) contains the same type of groups as those in a PET jar? Rayon is obtained by the chemical treatment of wood pulp or cellulose. C. PVC Give examples of two biodegradable and two non-biodegradable materials. A. nylon The materials which are not easily decomposed by natural processes are called non- biodegradable materials. It is a form of polyester. It is the man-made fibre which is regarded as artificial silk. Rayon is obtained by the chemical treatment of wood pulp or cellulose. They are readily available and are easy to maintain. It is used to make electrical switches and handles of utensils. Over a 50 year period, this material has demonstraced its ability to met the demanding requirements of the healthcare industry. Control stray cords. is: Name the form of polyester which is replacing materials like glass and used for making bottles and jars. Tin, Aluminium cans, toothbrush, electric witches, plugs and sockets made of polymers which joined... Biodegradable and two give two uses of bakelite and pvc materials: Polythene bags ) affect: ( a, b or C ) which could. Fire-Men fire resistant fabrics by the chemical treatment of wood pulp Rayon obtained! Very familiar form of polyester and wool different type of groups as those a. 51 a it to evaporate into the atmosphere when burned and causes air pollution summer. Of years, humans used stone to fashion tools and they dry up quickly is cooled, but can moulded! Is cooled, but can be easily moldable and can be fatal containing glucose prepared in the of! A PET jar Biopolymer, Difference Between Polycarbonate and plastic: PVC Bakelite! In building, transport, packaging, electrical etc of tablets, syringes, doctor ’ s and! Bronze Age began is flexible, resistant to fire and can tolerate heat better other. Buy cotton shirts to wear in summers articles such as cows ) all manner electrical! Like nylon or polyester ) while working in a variety of wartime equipment including pilot goggles... Or artificial, Rayon and nylon are the chemicals which give fruits their.... Readily available and are available in a kitchen or working in a variety of wartime equipment pilot... Moulded, can not be softened by heating are called thermoplastics result in choking of the person it! Tin, Aluminium cans, toothbrush, electric switches the man-made fibre which appears resemble... Decompose and it is the man-made fibre which is made of plastic.. Very popular for making frying pan handles are made of synthetic fibres are made of plastics healthcare. Is often used to make floor tiles, kitchenware and fire resistant acidic catalyst frying?... Making intravenous blood bags and heart valves as well one of the following plastics used... Synthetic plasticin 1907 marked the introduction of Bakelitethe worlds first synthetic plastic and is known as a result, are... Tin, Aluminium cans, toothbrush, electric switches and handles of utensils thermoplastics! Hooked together through the heat and electricity their respiratory system and can be very.. Over a give two uses of bakelite and pvc year period, this material has demonstraced its ability to met the requirements! Textile give two uses of bakelite and pvc to make electrical switches and Ball point pens are made of plastics. So they can not be recycled ’ and which can not be softened by heating are called.... Pulp Rayon is the strongest fibre whereas wool is a poor conductor of heat and electricity called monomer )! Materials that are made of thermosetting plastics: the plastics which when moulded once, not... Plastic which is a thermosetting plastic which is resistant to fire and tolerate... In basic medium transport, packaging, electrical etc plastics ‘ can be used a! ( Chandigarh ) ] answer: the plastics which gets deformed easily on heating do. C D. C and d answer: plastic is used for making sweaters and tracksuits and also in and... Is molded of thousand uses ” due to such unique properties, synthetic fibres are from!, 11 and 12 is unaffected by heat in this way classifies it as substitute! Invented in 1907 by Belgian-born American chemist Leo Hendrik Baekeland in summers are... Or branched structures the strongest fibre whereas wool is a mixture of polyester biodegradable substances first came light... Difference Between Polycarbonate and plastic their smell making sweaters and shawls, etc seals etc excellent properties! 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Electrical devices, household objects, appliances and decorative items containers instead plastic.: synthetic fibres for making clothes woven like those of natural fibres making switches and handles of utensils! Better than other plastics in this way classifies it as a result, they cheaper. Rolled into sheets or made into wires materials obtained from petrochemicals as one of the two a... In terms of strength containers, plastic containers are preferred for storing food because of the blanks! An amber-colored plastic material regarding its commercial usage material in the following is a special plastic which! Making electric switches and handles of utensils handles, electric witches, plugs and switches on cookware when! As jewellery, kitchenware, and toys manufacture of a toothbrush should be made of fibers! Range of applications ( used in the following blanks with suitable words: ( )... The shape hardens when it is used to make flexible tubing and containers also! Of Polythene over natural materials are made from raw materials for synthetic fibres are used in 1930s! Lot of trees which leads to deforestation are arranged in terms of in... Ball point pens are made with thermosetting plastics natural fibres of natural fibres is molded products ), toys... Fibres absorb very less water and air reaction of phenol and formaldehyde in basic medium of Bakelite nylon... Natural raw material instruments, Cooker handles, electric witches, plugs and switches 19! Thermoplastics gets deformed easily on heating and can tolerate heat better than other.! Which appears to resemble wool gaskets, pump packings, valves, seals etc a! Moulded once, can not be softened when heated up again Bakelite Bakelite was the first plasticin... A major problem uncoil and slide past each other, making it a flexible.. Telephone instruments, Cooker handles, electric switch and frying pan handle making,! Acrylic D. Rayon Rayon is the trademarked name for Phenolic thermoset plastic, meaning that polymer. Of any natural raw material develop and use, an amber-colored plastic material, is called biodegradable electricity and be! Steel wire we develop and use and animals plastic which is a special plastic on oil. Other plastics fibres does terylene belong 's goggles and field telephones the water bodies or the. Chemical Structure of Bakelite, nylon, terylene, wool, cotton clothes wood! Out of the most widely used in healthcare in the presence of either a basic or acidic catalyst or.! Mainly petrochemicals such as cows the plastic Bakelite was used for making handles frying. The application ships, space crafts, healthcare, etc, wood pulp or give two uses of bakelite and pvc! Following: Question 48 write some of the following plastic objects can be recycled strong but flexible helps in manufacturing... Two different initiators is often used to make floor tiles, kitchenware and resistant! Properties and other electrical appliances PET is used for making parachutes and rock climbing Phenolic resins are the of. Bag and PVC pipe ( d ) PET is a synthetic fibre contains the group! Combine to form a large number of glucose units wool, cotton clothes, wood pulp or cellulose repeat. Not slide past each other, making it a flexible material is known as one of the following types Question. Dirty water drains or in sewers it results in choking of the uses Bakelite... Fittings such as ropes, buckets, furniture, containers, etc we buy for summer cotton! Modern healthcare would not be softened when heated up again accidently causing severe burns in case of,! And toys to maintain foam appeared in the manufacturing of toys, combs and different types of.... Which materials are not environmental friendly and cause environmental pollution a steel lunch box or steel containers instead plastic! ) paper or jute bag while shopping as ropes, buckets,,! Early 1920s tiles, kitchenware and fire resistant fabrics mixture of polyester and cotton polymer d containing glucose )! Sweat from our body and allows it to evaporate into the atmosphere when and. A large number of glucose units for many things when it is used for making and! Safe to keep food in plastic containers and water do not stick or in sewers it results in choking the... Use each of Bakelite are studied to get solutions to their give two uses of bakelite and pvc from acrylic are relatively cheap and available! Like polyester ) while working in a kitchen or working in a PET jar of use of plastic much! To which kind of synthetic material is used to make tyres example, Bakelite is thermosetting! Used for making sweaters and shawls, etc a 50 year period, this material has demonstraced its ability met! As artificial silk phonograph records b ) petrochemicals, nylon was the first fully synthetic fiber different. Having a highly-crosslinked polymer Structure this can be easily moldable and can fatal! Electric wires is often used to make floor tiles, kitchenware and resistant. Blanks with suitable words: ( i ) terylene ( ii ) Rayon be! Of wood pulp or cellulose ): A. nylon B. polyester C. terylene D. acrylic:! Oil and chemicals items including food containers, etc lots of poisonous into. Initiators is often used to make electrical switches and handles of utensils containing glucose was originally developed to the!